Semiconductor Components Industries, LLC, 2004
March, 2004 − Rev. 12 1Publication Order Number:
MC7800/D
MC7800, MC7800A, LM340,
LM340A Series, NCV7805
1.0 A Positive Voltage
Regulators
These voltage regulators are monolithic integrated circuits designed
as fixed−voltage regulators for a wide variety of applications
including local, on−card regulation. These regulators employ internal
current limiting, thermal shutdown, and safe−area compensation. With
adequate heatsinking they can deliver output currents in excess of
1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.
•Output Current in Excess of 1.0 A
•No External Components Required
•Internal Thermal Overload Protection
•Internal Short Circuit Current Limiting
•Output Transistor Safe−Area Compensation
•Output Voltage Offered in 2% and 4% Tolerance
•Available in Surface Mount D2PAK−3, DPAK−3 and Standard
3−Lead Transistor Packages
•Pb−Free Package May be Available. The G−Suffix Denotes a
Pb−Free Lead Finish
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
Rating Symbol Value Unit
Input Voltage (5.0 − 18 V) VI35 Vdc
Input Voltage (24 V) 40
Power Dissipation
Case 221A (TO−220−3)
TA = 25°C PDInternally
Limited W
Thermal Resistance, Junction−to−Ambient RJA 65 °C/W
Thermal Resistance, Junction−to−Case RJC 5.0 °C/W
Case 936 (D2PAK−3)
TA = 25°C PDInternally
Limited W
Thermal Resistance, Junction−to−Ambient RJA See
Figure
14
°C/W
Thermal Resistance, Junction−to−Case RJA 5.0 °C/W
Case 369A (DPAK−3)
TA = 25°C PDInternally
Limited W
Thermal Resistance, Junction−to−Ambient RJA 92 °C/W
Thermal Resistance, Junction−to−Case RJC 5.0 °C/W
Storage Junction Temperature Range Tstg −65 to
+150 °C
Operating Junction Temperature TJ+150 °C
TO−220−3
T SUFFIX
CASE 221A
1
D2PAK−3
D2T SUFFIX
CASE 936
2
3
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
ORDERING INFORMATION
Heatsink surface
connected to Pin 2.
Pin 1. Input
2. Ground
3. Output
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
1
3
STANDARD APPLICATION
A common ground is required between the
input and the output voltages. The input voltage
must remain typically 2.0 V above the output
voltage even during the low point on the input
ripple voltage.
XX,
MC78XX
Input
Cin*
0.33 FCO**
Output
These two digits of the type number
indicate nominal voltage.
Cin is required if regulator is located an
appreciable distance from power supply
filter.
CO is not needed for stability; however,
it does improve transient response. Values
of less than 0.1 F could cause instability.
*
**
See general marking information in the device marking
section on page 18 of this data sheet.
DEVICE MARKING INFORMATION
1
3
DPAK−3
DT SUFFIX
CASE 369A
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MC7800, MC7800A, LM340, LM340A Series, NCV7805
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2
NOTE: ESD data available upon request.
R15
680
R18
100 k
D1
Zener
R1
10.66 k
R2
1.56 k
R17
9.0 k
Q7
QNPN
LAT
Q17
Q9
QNPN 2
Q8
QNPN
Q14
QNPN
Q6
QNPN
Q5
QNPN 2
LAT 3 A
Q18
R5
4.5 k
R6
1.0 k
Q13
QNPN Q2
QNPN 4
SUB
Q11 2
R11
15 k
QNPN 6
Q1
R7
14 k
R3
1.8 k
R8
5.0 k
Diode
Q16
Q4
QNPN
N+
C1
30 P
C2
3.0 P
R9
3.0 k
R16
600
R20
17500
Q15
QNPN
Q10
QNPN
R22
100
Q12
QNPN
R24
50
1.0 P
R21
600 R23
0.2
R19
27.5 k
D2
Zener
Q19
QNPN
R14
1.0 k
Q20
QNPN
R28
9.0 k
R27
9.0 k
R29
9.0 k
R25
6.0 k
R26
3.0 k
R12
3.0 k
R10
3340−(3316ACT)
R30
18 k
Sense
Vout
5.01
Vin
R13
11660
Q3
QNPN
MC7800
C3
Figure 1. Representative Schematic Diagram
This device contains 22 active transistors.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805B, NCV7805 MC7805C/LM340T−5
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO4.8 5.0 5.2 4.8 5.0 5.2 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD
≤15 W) VOVdc
7.0 Vdc ≤ Vin ≤ 20 Vdc − − − 4.75 5.0 5.25
8.0 Vdc ≤ Vin ≤ 20 Vdc 4.75 5.0 5.25 − − −
Line Regulation (Note 2) Regline mV
7.5 Vdc ≤ Vin ≤ 20 Vdc, 1.0 A − 5.0 100 − 0.5 20
8.0 Vdc ≤ Vin ≤ 12 Vdc − 1.3 50 − 0.8 10
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.0 A − 1.3 100 − 1.3 25
5.0 mA ≤ IO ≤ 1.5 A (TA = 25°C) − 0.15 50 − 1.3 25
Quiescent Current IB− 3.2 8.0 − 3.2 6.5 mA
Quiescent Current Change IBmA
7.0 Vdc ≤ Vin ≤ 25 Vdc − − − − 0.3 1.0
5.0 mA ≤ IO ≤ 1.0 A (TA = 25°C) − − 0.5 − 0.08 0.8
Ripple Rejection RR − 68 − 62 83 − dB
8.0 Vdc ≤ Vin ≤ 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 0.9 − − 0.9 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.6 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of
Output Voltage TCVO− −0.3 − − −0.3 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805AB/MC7805AC/LM340AT−5
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO4.9 5.0 5.1 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO4.8 5.0 5.2 Vdc
7.5 Vdc ≤ Vin ≤ 20 Vdc
Line Regulation (Note 2) Regline mV
7.5 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 0.5 10
8.0 Vdc ≤ Vin ≤ 12 Vdc, IO = 1.0 A − 0.8 12
8.0 Vdc ≤ Vin ≤ 12 Vdc, IO = 1.0 A, TJ = 25°C − 1.3 4.0
7.3 Vdc ≤ Vin ≤ 20 Vdc, IO = 1.0 A, TJ = 25°C − 4.5 10
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.3 25
5.0 mA ≤ IO ≤ 1.0 A − 0.8 25
250 mA ≤ IO ≤ 750 mA − 0.53 15
Quiescent Current IB− 3.2 6.0 mA
Quiescent Current Change IBmA
8.0 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 0.3 0.8
7.5 Vdc ≤ Vin ≤ 20 Vdc, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − 0.08 0.5
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (continued) (Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless
otherwise noted.)
MC7805AB/MC7805AC/LM340AT−5
Characteristic Symbol Min Typ Max Unit
Ripple Rejection RR 68 83 − dB
8.0 Vdc ≤ Vin ≤ 18 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) rO− 0.9 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.3 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 11 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7806B MC7806C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO5.75 6.0 6.25 5.75 6.0 6.25 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
8.0 Vdc ≤ Vin ≤ 21 Vdc − − − 5.7 6.0 6.3
9.0 Vdc ≤ Vin ≤ 21 Vdc 5.7 6.0 6.3 − − −
Line Regulation, TJ = 25°C (Note 2) Regline mV
8.0 Vdc ≤ Vin ≤ 25 Vdc − 5.5 120 − 0.5 24
9.0 Vdc ≤ Vin ≤ 13 Vdc − 1.4 60 − 0.8 12
Load Regulation, TJ = 25°C (Note 2) Regload − 1.3 120 − 1.3 30 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current (TJ = 25°C) IB− 3.3 8.0 − 3.3 8.0 mA
Quiescent Current Change IBmA
8.0 Vdc ≤ Vin ≤ 25 Vdc − − − − 0.3 1.3
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − 0.08 0.5
Ripple Rejection RR − 65 − 58 65 − dB
9.0 Vdc ≤ Vin ≤ 19 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 0.9 − − 0.9 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output
Voltage TCVO− −0.3 − − −0.3 − mV/°C
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (Vin = 11 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7806AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO5.88 6.0 6.12 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO5.76 6.0 6.24 Vdc
8.6 Vdc ≤ Vin ≤ 21 Vdc
Line Regulation (Note 2) Regline mV
8.6 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 5.0 12
9.0 Vdc ≤ Vin ≤ 13 Vdc, IO = 1.0 A − 1.4 15
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.3 25
5.0 mA ≤ IO ≤ 1.0 A − 0.9 25
250 mA ≤ IO ≤ 750 mA − 0.2 15
Quiescent Current IB− 3.3 6.0 mA
Quiescent Current Change IBmA
9.0 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − − 0.8
9.0 Vdc ≤ Vin ≤ 21 Vdc, IO = 1.0 A, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − − 0.5
Ripple Rejection RR 58 65 − dB
9.0 Vdc ≤ Vin ≤ 19 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) rO− 0.9 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.3 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7808B MC7808C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO7.7 8.0 8.3 7.7 8.0 8.3 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
10.5 Vdc ≤ Vin ≤ 23 Vdc − − − 7.6 8.0 8.4
11.5 Vdc ≤ Vin ≤ 23 Vdc 7.6 8.0 8.4 − − −
Line Regulation, TJ = 25°C, (Note 2) Regline mV
10.5 Vdc ≤ Vin ≤ 25 Vdc − 6.0 160 − 6.0 32
11 Vdc ≤ Vin ≤ 17 Vdc − 1.7 80 − 1.7 16
Load Regulation, TJ = 25°C (Note 2) Regload − 1.4 160 − 1.4 35 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current IB− 3.3 8.0 − 3.3 8.0 mA
Quiescent Current Change IBmA
10.5 Vdc ≤ Vin ≤ 25 Vdc − − − − − 1.0
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (continued) (Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless
otherwise noted.)
MC7808B MC7808C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Ripple Rejection RR − 62 − 56 62 − dB
11.5 Vdc ≤ Vin ≤ 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 0.9 − − 0.9 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.4 − − −0.4 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7808AB/MC7808AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO7.84 8.0 8.16 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO7.7 8.0 8.3 Vdc
10.6 Vdc ≤ Vin ≤ 23 Vdc
Line Regulation (Note 2) Regline mV
10.6 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − 6.0 15
11 Vdc ≤ Vin ≤ 17 Vdc, IO = 1.0 A − 1.7 18
10.4 Vdc ≤ Vin ≤ 23 Vdc, TJ = 25°C − 5.0 15
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.4 25
5.0 mA ≤ IO ≤ 1.0 A − 1.0 25
250 mA ≤ IO ≤ 750 mA − 0.22 15
Quiescent Current IB− 3.3 6.0 mA
Quiescent Current Change IBmA
11 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA − − 0.8
10.6 Vdc ≤ Vin ≤ 23 Vdc, IO = 1.0 A, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − − 0.5
Ripple Rejection RR 56 62 − dB
11.5 Vdc ≤ Vin ≤ 2 1.5 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 0.9 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.4 − mV/°C
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (Vin = 15 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7809B MC7809C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO8.65 9.0 9.35 8.65 9.0 9.35 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
11.5 Vdc ≤ Vin ≤ 24 Vdc 8.55 9.0 9.45 8.55 9.0 9.45
Line Regulation, TJ = 25°C (Note 2) Regline mV
11 Vdc ≤ Vin ≤ 26 Vdc − 6.2 32 − 6.2 32
11.5 Vdc ≤ Vin ≤ 17 Vdc − 1.8 16 − 1.8 16
Load Regulation, TJ = 25°C (Note 2) Regload − 1.5 35 − 1.5 35 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current IB− 3.4 8.0 − 3.4 8.0 mA
Quiescent Current Change IBmA
11.5 Vdc ≤ Vin ≤ 26 Vdc − − 1.0 − − 1.0
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR 56 61 − 56 61 − dB
11.5 Vdc ≤ Vin ≤ 21.5 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.0 − − 1.0 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.5 − − −0.5 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7812B MC7812C/LM340T−12
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO11.5 12 12.5 11.5 12 12.5 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
14.5 Vdc ≤ Vin ≤ 27 Vdc − − − 11.4 12 12.6
15.5 Vdc ≤ Vin ≤ 27 Vdc 11.4 12 12.6 − − −
Line Regulation, TJ = 25°C (Note 2) Regline mV
14.5 Vdc ≤ Vin ≤ 30 Vdc − 7.5 240 − 3.8 24
16 Vdc ≤ Vin ≤ 22 Vdc − 2.2 120 − 0.3 24
14.8 Vdc ≤ Vin ≤ 27 Vdc, IO = 1.0 A − − − − − 48
Load Regulation, TJ = 25°C (Note 2) Regload − 1.6 240 − 8.1 60 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current IB− 3.4 8.0 − 3.4 6.5 mA
Quiescent Current Change IBmA
14.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − − − − − 0.7
15 Vdc ≤ Vin ≤ 30 Vdc − − 1.0 − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 60 − 55 60 − dB
15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (continued) (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless
otherwise noted.)
MC7812B MC7812C/LM340T−12
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.1 − − 1.1 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.8 − − −0.8 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7812AB/MC7812AC/LM340AT−12
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO11.75 12 12.25 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO11.5 12 12.5 Vdc
14.8 Vdc ≤ Vin ≤ 27 Vdc
Line Regulation (Note 2) Regline mV
14.8 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − 3.8 18
16 Vdc ≤ Vin ≤ 22 Vdc, IO = 1.0 A − 2.2 20
14.5 Vdc ≤ Vin ≤ 27 Vdc, TJ = 25°C − 6.0 120
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − − 25
5.0 mA ≤ IO ≤ 1.0 A − − 25
Quiescent Current IB− 3.4 6.0 mA
Quiescent Current Change IBmA
15 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − − 0.8
14.8 Vdc ≤ Vin ≤ 27 Vdc, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A, TJ = 25°C − − 0.5
Ripple Rejection RR 55 60 − dB
15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) rO− 1.1 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −0.8 − mV/°C
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (Vin = 23 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7815B MC7815C/LM340T−15
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO14.4 15 15.6 14.4 15 15.6 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
17.5 Vdc ≤ Vin ≤ 30 Vdc − − − 14.25 15 15.75
18.5 Vdc ≤ Vin ≤ 30 Vdc 14.25 15 15.75 − − −
Line Regulation, TJ = 25°C (Note 2) Regline mV
17.9 Vdc ≤ Vin ≤ 30 Vdc − 8.5 300 − 8.5 30
20 Vdc ≤ Vin ≤ 26 Vdc − 3.0 150 − 3.0 28
Load Regulation, TJ = 25°C (Note 2) Regload − 1.8 300 − 1.8 55 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current IB− 3.5 8.0 − 3.5 6.5 mA
Quiescent Current Change IBmA
17.5 Vdc ≤ Vin ≤ 30 Vdc − − − − − 0.8
17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − − 1.0 − − 0.7
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 58 − 54 58 − dB
18.5 Vdc ≤ Vin ≤ 28.5 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.2 − − 1.2 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −1.0 − − −1.0 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 23 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7815AB/MC7815AC/LM340AT−15
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO14.7 15 15.3 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO14.4 15 15.6 Vdc
17.9 Vdc ≤ Vin ≤ 30 Vdc
Line Regulation (Note 2) Regline mV
17.9 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − 8.5 20
20 Vdc ≤ Vin ≤ 26 Vdc − 3.0 22
17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − 7.0 20
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 1.8 25
5.0 mA ≤ IO ≤ 1.0 A − 1.5 25
250 mA ≤ IO ≤ 750 mA − 1.2 15
Quiescent Current IB− 3.5 6.0 mA
Quiescent Current Change IBmA
17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 500 mA − − 0.8
17.5 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − − 0.5
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (continued) (Vin = 23 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless
otherwise noted.)
MC7815AB/MC7815AC/LM340AT−15
Characteristic Symbol Min Typ Max Unit
Ripple Rejection RR 60 80 − dB
18.5 Vdc ≤ Vin ≤ 28.5 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.2 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −1.0 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7818B MC7818C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO17.3 18 18.7 17.3 18 18.7 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
21 Vdc ≤ Vin ≤ 33 Vdc − − − 17.1 18 18.9
22 Vdc ≤ Vin ≤ 33 Vdc 17.1 18 18.9 − − −
Line Regulation, (Note 2) Regline mV
21 Vdc ≤ Vin ≤ 33 Vdc − 9.5 360 − 9.5 50
24 Vdc ≤ Vin ≤ 30 Vdc − 3.2 180 − 3.2 25
Load Regulation, (Note 2) Regload − 2.0 360 − 2.0 55 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current IB− 3.5 8.0 − 3.5 6.5 mA
Quiescent Current Change IBmA
21 Vdc ≤ Vin ≤ 33 Vdc − − − − − 1.0
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 57 − 53 57 − dB
22 Vdc ≤ Vin ≤ 33 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) ViI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.3 − − 1.3 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −1.5 − − −1.5 − mV/°C
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7818AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO17.64 18 18.36 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO17.3 18 18.7 Vdc
21 Vdc ≤ Vin ≤ 33 Vdc
Line Regulation (Note 2) Regline mV
21 Vdc ≤ Vin ≤ 33 Vdc, IO = 500 mA − 9.5 22
24 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A − 3.2 25
24 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C − 3.2 10.5
20.6 Vdc ≤ Vin ≤ 33 Vdc, IO = 1.0 A, TJ = 25°C − 8.0 22
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 2.0 25
5.0 mA ≤ IO ≤ 1.0 A − 1.8 25
250 mA ≤ IO ≤ 750 mA − 1.5 15
Quiescent Current IB− 3.5 6.0 mA
Quiescent Current Change IBmA
21 Vdc ≤ Vin ≤ 33 Vdc, IO = 500 mA − − 0.8
21.5 Vdc ≤ Vin ≤ 30 Vdc, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − − 0.5
Ripple Rejection RR 53 57 − dB
22 Vdc ≤ Vin ≤ 32 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.3 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −1.5 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7824B MC7824C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (TJ = 25°C) VO23 24 25 23 24 25 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VOVdc
27 Vdc ≤ Vin ≤ 38 Vdc − − − 22.8 24 25.2
28 Vdc ≤ Vin ≤ 38 Vdc 22.8 24 25.2 − − −
Line Regulation, (Note 2) Regline mV
27 Vdc ≤ Vin ≤ 38 Vdc − 11.5 480 − 2.7 60
30 Vdc ≤ Vin ≤ 36 Vdc − 3.8 240 − 2.7 48
Load Regulation, (Note 2) Regload − 2.1 480 − 4.4 65 mV
5.0 mA ≤ IO ≤ 1.5 A
Quiescent Current IB− 3.6 8.0 − 3.6 6.5 mA
Quiescent Current Change IBmA
27 Vdc ≤ Vin ≤ 38 Vdc − − − − − 1.0
5.0 mA ≤ IO ≤ 1.0 A − − 0.5 − − 0.5
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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ELECTRICAL CHARACTERISTICS (continued) (Vin = 33 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless
otherwise noted.)
MC7824B MC7824C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Ripple Rejection RR − 54 − 50 54 − dB
28 Vdc ≤ Vin ≤ 38 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − − 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − − 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz rO− 1.4 − − 1.4 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −2.0 − − −2.0 − mV/°C
ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7824AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C) VO23.5 24 24.5 Vdc
Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤15 W) VO23.2 24 25.8 Vdc
27.3 Vdc ≤ Vin ≤ 38 Vdc
Line Regulation (Note 2) Regline mV
27 Vdc ≤ Vin ≤ 38 Vdc, IO = 500 mA − 11.5 25
30 Vdc ≤ Vin ≤ 36 Vdc, IO = 1.0 A − 3.8 28
30 Vdc ≤ Vin ≤ 36 Vdc, TJ = 25°C − 3.8 12
26.7 Vdc ≤ Vin ≤ 38 Vdc, IO = 1.0 A, TJ = 25°C − 10 25
Load Regulation (Note 2) Regload mV
5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C − 2.1 15
5.0 mA ≤ IO ≤ 1.0 A − 2.0 25
250 mA ≤ IO ≤ 750 mA − 1.8 15
Quiescent Current IB− 3.6 6.0 mA
Quiescent Current Change IBmA
27.3 Vdc ≤ Vin ≤ 38 Vdc, IO = 500 mA − − 0.8
27 Vdc ≤ Vin ≤ 38 Vdc, TJ = 25°C − − 0.8
5.0 mA ≤ IO ≤ 1.0 A − − 0.5
Ripple Rejection RR 45 54 − dB
28 Vdc ≤ Vin ≤ 38 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI − VO− 2.0 − Vdc
Output Noise Voltage (TA = 25°C) Vn− 10 − V/VO
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz) rO− 1.4 − m
Short Circuit Current Limit (TA = 25°C) ISC − 0.2 − A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C) Imax − 2.2 − A
Average Temperature Coefficient of Output Voltage TCVO− −2.0 − mV/°C
1. Tlow =0°C for MC78XXAC, C, LM340AT−XX, LM340T−XX Thigh = +125°C for MC78XXAC, C, LM340AT−XX, LM340T−XX, NCV7805
=40°C for MC78XXB, MC78XXAB, NCV7805
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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Figure 2. Peak Output Current as a Function of
Input/Output Differential Voltage (MC78XXC, AC, B) Figure 3. Ripple Rejection as a Function of
Output Voltages (MC78XXC, AC, B)
Figure 4. Ripple Rejection as a Function of
Frequency (MC78XXC, AC, B) Figure 5. Output Voltage as a Function of
Junction Temperature (MC7805C, AC, B)
Figure 6. Output Impedance as a Function of
Output Voltage (MC78XXC, AC, B) Figure 7. Quiescent Current as a Function of
Temperature (MC78XXC, AC, B)
IO
Vin−Vout, INPUT/OUTPUT VOLTAGE DIFFERENTIAL (V)
3.0
2.0
1.5
1.0
0
4.0 8.0 12 20 30 40
, OUTPUT CURRENT (A)
80
70
60
50
40
4.0 6.0 8.0 10 12 14 16 18 20 22 24
VO, OUTPUT VOLTAGE (V)
RR, RIPPLE REJECTION (dB)
PART # Vin
MC7805C= 10 V
MC7806C= 11 V
MC7808C= 14 V
MC7812C= 19 V
MC7815C= 23 V
MC7818C= 27 V
MC7824C= 33 V
80
50
RR, RIPPLE REJECTION (dB)
0.1 10
f, FREQUENCY (kHz)
0.01
, OUTPUT VOLTAGE (V)
O
5.0
4.9
−60 −20 20 60 100 140 180
TJ, JUNCTION TEMPERATURE (°C)
V
, OUTPUT IMPEDANCE (m)
OΩ
10
5.0
3.0
2.0
1.0
0.5
0.3
0.2
0.14.0 8.0 12 16 20 24
VO, OUTPUT VOLTAGE (V)
Z
, QUIESCENT CURRENT (mA)
B
6.0
4.0
3.0
2.0
1.0
0
−75 −50
TJ, JUNCTION TEMPERATURE (°C)
−25 0 25 50 75 100 125
I
2.5
0.5
70
40
30
60
4.8
6.0 10 15 25 35
TJ = 85°C
TJ = 25°C
1.0
f = 120 Hz
IO = 20 mA
Vin = 1.0 V(RMS)
TJ = 125°C
TJ = 0°C
f = 120 Hz
IO = 500 mA
CL = 0 F
Vin = 10 V
VO = 5.0 V
IL = 20 mA
Vin = 20 V
IO = 5.0 mA
MC78XXB, C, AC
Vin = 8.0 V to 18 V
IO = 500 mA
f = 120 Hz
TA = 25°C
TJ = −40°C
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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APPLICATIONS INFORMATION
Design Considerations
The MC7800 Series of fixed voltage regulators are
designed with Thermal Overload Protection that shuts down
the circuit when subjected to an excessive power overload
condition, Internal Short Circuit Protection that limits the
maximum c urrent t he circuit will p ass, a nd O utput Transistor
Safe−Area C ompensation t hat r educes t he o utput s hort c ircuit
current as the voltage across the pass transistor is increased.
In many low current applications, compensation
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long
wire lengths, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
high−frequency characteristics to insure stable operation
under all load conditions. A 0.33 F or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The bypass capacitor
should be mounted with the shortest possible leads directly
across the regulators input terminals. Normally good
construction techniques should be used to minimize ground
loops and lead resistance drops since the regulator has no
external sense lead.
IO5.0V
RIB
Figure 8. Current Regulator Figure 9. Adjustable Output Regulator
Figure 10. Current Boost Regulator Figure 11. Short Circuit Protection
The MC7800 regulators can also be used as a current source when
connected as above. In order to minimize dissipation the MC7805C is
chosen in this application. Resistor R determines the current as follows:
For example, a 1.0 A current source would require R to be a 5.0 ,
10 W resistor and the output voltage compliance would be the input
voltage less 7.0 V.
IB 3.2 mA over line and load changes.
Input
0.33 FR
IO
MC7805
Constant
Current to
Grounded
Load
The addition of an operational amplifier allows adjustment to higher or
intermediate values while retaining regulation characteristics. The
minimum voltage obtainable with this arrangement is 2.0 V greater than the
regulator voltage.
Input MC7805 Output
0.33 F
10 k
MC1741G
7
6
4
1.0 k
VO = 7.0 V to 20 V
VIN = VO ≥ 2.0 V
0.1 F
3
2
The MC7800 series can be current boosted with a PNP transistor. The
MJ2955 provides current to 5.0 A. Resistor R in conjunction with the VBE
of the PNP determines when the pass transistor begins conducting; this
circuit is not short circuit proof. Input/output differential voltage minimum is
increased by VBE of the pass transistor.
XX = 2 digits of type number indicating voltage.
MC78XX
Input
Output
R
1.0 F
MJ2955 or Equiv.
1.0 F
The circuit of Figure 10 can be modified to provide supply protection
against short circuits by adding a short circuit sense resistor, RSC, and an
additional PNP transistor. The current sensing PNP must be able to handle
the short circuit current of the three−terminal regulator. Therefore, a
four−ampere plastic power transistor is specified.
XX = 2 digits of type number indicating voltage.
1.0 F
MC78XX
MJ2955
or Equiv.
Output
RSC
R
2N6049
or Equiv.
≥ 10 F
RSource
0.33 FInput
RSource
0.33 F
≥ 10 F
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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Figure 12. Worst Case Power Dissipation versus
Ambient Temperature (Case 221A) Figure 13. Input Output Differential as a Function
of Junction Temperature (MC78XXC, AC, B)
, POWER DISSIPATION (W)
D
20
16
12
8.0
4.0
0
−50 −25 0 25 50 75 100 125 150
TA, AMBIENT TEMPERATURE (°C)
P
HS = 0°C/W
DIFFERENTIAL (V)
in out, INPUT−OUTPUT VOLTAGE
0.5
0−75 −50 −25 0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
− VV
IO = 0 mA
IO = 20 mA
IO = 1.0 A
IO = 500 mA
IO = 200 mA
VO = 2% of VO
− − − Extended Curve for MC78XXB
JC = 5°C/W
JA = 65°C/W
TJ(max) = 150°C
HS = 5°C/W
HS = 15°C/W
No Heatsink
2.0
1.5
1.0
2.5
Figure 14. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
R , THERMAL RESISTANCE
JAθ
JUNCTION-TO-AIR ( C/W)°
30
40
50
60
70
80
1.0
1.5
2.0
2.5
3.0
3.5
010203025155.0
L, LENGTH OF COPPER (mm)
PD(max) for TA = 50°C
Minimum
Size Pad
2.0 oz. Copper
L
L
ÎÎÎÎ
ÎÎÎÎ
ÎÎÎÎ
ÎÎÎÎ
Free Air
Mounted
Vertically
PD, MAXIMUM POWER DISSIPATION (W)
RJA
40
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2.0
2.4
010203025155.0
L, LENGTH OF COPPER (mm)
PD(max) for TA = 50°C
Minimum
Size Pad
PD
L
L
ÎÎÎÎ
ÎÎÎÎ
ÎÎÎÎ
ÎÎÎÎ
, MAXIMUM POWER DISSIPATION (W)
Free Air
Mounted
Vertically
RJA
2.0 oz. Copper
R , THERMAL RESISTANCE
JAθ
JUNCTION−TO−AIR ( C/W)°
Figure 15. DPAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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DEFINITIONS
Line Regulation − The change in output voltage for a
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Load Regulation − The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation − The maximum total
device dissipation for which the regulator will operate
within specifications.
Quiescent Current − That part of the input current that is
not delivered to the load.
Output Noise Voltage − The rms ac voltage at the output,
with constant load and no input ripple, measured over a
specified frequency range.
Long Term Stability − Output voltage stability under
accelerated life test conditions with the maximum rated
voltage listed in the devices’ electrical characteristics and
maximum power dissipation.
ORDERING INFORMATION
Shipping†
Device Output Voltage Temperature Range Package Rails
(No Suffix) Tape & Reel
(R4 Suffix)
MC7805.2CT TO−220 −
MC7805ACD2T/R4
50V
T 0°to +125°C
D2PAK
50 Units/Rail
800 Units/Reel
MC7805ACT 5.0 V TJ = 0° to +125°CTO−220 50 Units/Rail −
MC7805CD2T/R4 D2PAK 800 Units/Reel
MC7805CT TO−220
MC7805CTG 5.0 V TJ = 0° to +125°CTO−220
(Pb−Free) 50 Units/Rail −
MC7805CDT/RK DPAK 75 Units/Rail 2500 Units/Reel
LM340T−5 TJ = 0° to +125°C
TO 220
LM340AT−5
J0o5C
TO−220 −
MC7805BD2T/R4 D2PAK 50 Units/Rail 800 Units/Reel
MC7805BT 5.0 V
TO 220
50 U s/ a
−
NCV7805BT*
TJ=
40
°
to +125
°
C
TO−220 −
MC7805BDT/RK
T
J =
40°
t
o +
125°C
DPAK
MC7805BDTRKG DPAK
(Pb−Free) 75 Units/Rail 2500 Units/Reel
MC7805ABD2T/R4
50V
T 40°to +125°C
D2PAK 800 Units/Reel
MC7805ABT 5.0 V TJ = 40° to +125°CTO−220 −
MC7806ACT
TO 220
50 Units/Rail
−
MC7806CT
60V
TJ=0
°
to +125
°
C
TO−220
50
U
n
it
s
/R
a
il
−
MC7806CTG
6
.
0
V
T
J =
0°
t
o +
125°C
TO−220
(Pb−Free) −
MC7806BD2T/R4
60V
T 40°to +125°C
D2PAK 800 Units/Reel
MC7806BT 6.0 V TJ = 40° to +125°C
TO 220
50 Units/Rail
−
MC7808ACT
80V
T 0°to +125°C
TO−220 50 Units/Rail −
MC7808CD2T/R4 8.0 V TJ = 0° to +125°CD2PAK 800 Units/Reel
MC7808CT TO−220
MC7808CTG 8.0 V TJ = 0° to +125°CTO−220
(Pb−Free) 50 Units/Rail −
MC7808CDT/RK/T5 DPAK
MC7808CDTT5G 8.0 V TJ = 0° to +125°CDPAK
(Pb−Free) 75 Units/Rail 2500 Units/Reel
*NCV7805: Tlow = −40°C, Thigh = +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring
site and change control.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifi-
cations Brochure, BRD8011/D.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
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17
ORDERING INFORMATION (continued)
Shipping†
Device Output Voltage Temperature Range Package Rails
(No Suffix) Tape & Reel
(R4 Suffix)
MC7808BD2T/R4 8.0 V TJ = 40° to +125°C D2PAK 50 Units/Rail 800 Units/Reel
MC7808BT 8.0 V TJ = 40° to +125°C TO−220 50 Units/Rail −
MC7808BDT/RK 8.0 V TJ = 40° to +125°C DPAK 75 Units/Rail 2500 Units/Reel
MC7808ABD2T/R4 8.0 V TJ = 40° to +125°C D2PAK 50 Units/Rail 800 Units/Reel
MC7808ABT 8.0 V TJ = 40° to +125°C TO−220 50 Units/Rail −
MC7809ACT TO−220 −
MC7809CD2T/R4 D2PAK 800 Units/Reel
MC7809CT 9.0 V TJ = 0° to +125°CTO−220 50 Units/Rail
MC7809CTG TO−220
(Pb−Free) −
MC7809BT 9.0 V TJ = 40° to +125°C TO−220 −
MC7812ACD2T/R4 D2PAK 800 Units/Reel
MC7812ACT TO−220 50 Units/Rail −
MC7812CD2T/R4 D2PAK
50 U s/ a
800 Units/Reel
MC7812CT TJ = 0° to +125°CTO−220 −
MC7812CDT/RK
J0o5C
DPAK 75 Units/Rail 2500 Units/Reel
LM340T−12
12 V
TO 220
LM340AT−12 12 V TO−220
50 Units/Rail
−
MC7812BD2T/R4 D2PAK 50 Units/Rail 800 Units/Reel
MC7812BT TO−220 −
MC7812BDT/RK TJ = 40° to +125°CDPAK 75 Units/Rail 2500 Units/Reel
MC7812ABD2T/R4
J0o5C
D2PAK 800 Units/Reel
MC7812ABT TO−220 −
MC7815ACD2T/R4 D2PAK 800 Units/Reel
MC7815ACT TO−220
50 Units/Rail
−
MC7815CD2T/R4 D2PAK 50 Units/Rail 800 Units/Reel
MC7815CT TJ = 0° to +125°C
LM340T−15
J0o5C
TO−220 −
LM340AT−15
15 V
O0
MC7815CDT/RK 15 V DPAK 75 Units/Rail 2500 Units/Reel
MC7815BD2T/R4 D2PAK
50 Units/Rail
800 Units/Reel
MC7815BT TO−220 50 Units/Rail −
MC7815BDT/RK TJ = 40° to +125°CDPAK 75 Units/Rail 2500 Units/Reel
MC7815ABD2T/R4
J0o5C
D2PAK 800 Units/Reel
MC7815ABT TO−220 −
MC7818ACT TO−220 −
MC7818CD2T/R4
18 V
TJ = 0° to +125°CD2PAK 800 Units/Reel
MC7818CT 18 V
J0o5C
−
MC7818BT TJ = 40° to +125°CTO−220 50 Units/Rail −
MC7824ACT
O0
50 U s/ a
−
MC7824CD2T TJ = 0° to +125°CD2PAK
MC7824CT 24 V
J0o5C
TO−220 −
MC7824BD2T/R4
T = 40°to +125°C
D2PAK 800 Units/Reel
MC7824BT TJ = 40° to +125°CTO−220 −
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
18
MC7800, MC7800A Series, NCV7805
78xxXXD2T
AWLYWW
MC
AWLYWW
78xxXXT
LM340, LM340A Series
LM
AWLYWW
340XT−xx
xx = Voltage Option
XX = Appropriate Suffix Options
A = Assembly Location
WL, L = Wafer Lot
Y = Year
WW = Work Week
MARKING DIAGRAMS
TO−220−3
T SUFFIX
CASE 221A
MC
D2PAK−3
D2T SUFFIX
CASE 936
DPAK−3
DT SUFFIX
CASE 369A
78xxX
ALYWW
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
19
PACKAGE DIMENSIONS
TO−220−3
T SUFFIX
CASE 221A−09
ISSUE AA
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION Z DEFINES A ZONE WHERE ALL
BODY AND LEAD IRREGULARITIES ARE
ALLOWED.
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.570 0.620 14.48 15.75
B0.380 0.405 9.66 10.28
C0.160 0.190 4.07 4.82
D0.025 0.035 0.64 0.88
F0.142 0.147 3.61 3.73
G0.095 0.105 2.42 2.66
H0.110 0.155 2.80 3.93
J0.018 0.025 0.46 0.64
K0.500 0.562 12.70 14.27
L0.045 0.060 1.15 1.52
N0.190 0.210 4.83 5.33
Q0.100 0.120 2.54 3.04
R0.080 0.110 2.04 2.79
S0.045 0.055 1.15 1.39
T0.235 0.255 5.97 6.47
U0.000 0.050 0.00 1.27
V0.045 −−− 1.15 −−−
Z−−− 0.080 −−− 2.04
B
Q
H
Z
L
V
G
N
A
K
F
123
4
D
SEATING
PLANE
−T−
C
S
T
U
R
J
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
20
D
2
PAK−3
D2T SUFFIX
CASE 936−03
ISSUE B
5 REF5 REF
V
U
TERMINAL 4
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS
A AND K.
4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.
5. DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASH
AND GATE PROTRUSIONS NOT TO EXCEED
0.025 (0.635) MAXIMUM.
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.386 0.403 9.804 10.236
INCHES
B0.356 0.368 9.042 9.347
C0.170 0.180 4.318 4.572
D0.026 0.036 0.660 0.914
E0.045 0.055 1.143 1.397
F0.051 REF 1.295 REF
G0.100 BSC 2.540 BSC
H0.539 0.579 13.691 14.707
J0.125 MAX 3.175 MAX
K0.050 REF 1.270 REF
L0.000 0.010 0.000 0.254
M0.088 0.102 2.235 2.591
N0.018 0.026 0.457 0.660
P0.058 0.078 1.473 1.981
R
S0.116 REF 2.946 REF
U0.200 MIN 5.080 MIN
V0.250 MIN 6.350 MIN
A
12 3
K
F
B
J
S
H
DG
C
M
0.010 (0.254) T
E
ML
P
N
R
−T−
OPTIONAL
CHAMFER
D2PAK−3
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
8.38
0.33
1.016
0.04
17.02
0.67
10.66
0.42
3.05
0.12
5.08
0.20
mm
inches
SCALE 3:1
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
21
PACKAGE DIMENSIONS
DPAK−3
DT SUFFIX
CASE 369A−13
ISSUE AB
D
A
K
B
R
V
S
FL
G
2 PL
M
0.13 (0.005) T
E
C
U
J
H
−T− SEATING
PLANE
Z
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.235 0.250 5.97 6.35
B0.250 0.265 6.35 6.73
C0.086 0.094 2.19 2.38
D0.027 0.035 0.69 0.88
E0.033 0.040 0.84 1.01
F0.037 0.047 0.94 1.19
G0.180 BSC 4.58 BSC
H0.034 0.040 0.87 1.01
J0.018 0.023 0.46 0.58
K0.102 0.114 2.60 2.89
L0.090 BSC 2.29 BSC
R0.175 0.215 4.45 5.46
S0.020 0.050 0.51 1.27
U0.020 −−− 0.51 −−−
V0.030 0.050 0.77 1.27
Z0.138 −−− 3.51 −−−
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
123
4
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
DPAK−3
5.80
0.228
2.58
0.101
1.6
0.063
6.20
0.244 3.0
0.118
6.172
0.243
mm
inches
SCALE 3:1
MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
22
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty , representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
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