MC78L00A Series Three-Terminal Low Current Positive Voltage Regulators The MC78L00A Series of positive voltage regulators are inexpensive, easy-to-use devices suitable for a multitude of applications that require a regulated supply of up to 100 mA. Like their higher powered MC7800 and MC78M00 Series cousins, these regulators feature internal current limiting and thermal shutdown making them remarkably rugged. No external components are required with the MC78L00 devices in many applications. These devices offer a substantial performance advantage over the traditional zener diode-resistor combination, as output impedance and quiescent current are substantially reduced. * Wide Range of Available, Fixed Output Voltages * Low Cost * Internal Short Circuit Current Limiting * Internal Thermal Overload Protection * No External Components Required * Complementary Negative Regulators Offered (MC79L00A Series) Q3 Input Q12 Q1 Q10 5.0k 3.8k Q4 1.9k 1.2k Q6 Output Q9 Q8 Q2 3 TO-92 P SUFFIX CASE 29 2.85k Q7 *SOP-8 is an internally modified SO-8 package. Pins 2, 3, 6, and 7 are electrically common to the die attach flag. This internal lead frame modification decreases package thermal resistance and increases power dissipation capability when appropriately mounted on a printed circuit board. SOP-8 conforms to all external dimensions of the standard SO-8 package. VOUT 1 8 GND 2 7 GND GND 3 6 GND NC 4 5 NC 420 Ground DEVICE TYPE/NOMINAL VOLTAGE Standard Application MC78LXXA Cin* 0.33F Output CO** 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. *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. Semiconductor Components Industries, LLC, 1999 October, 1999 - Rev. 0 VIN (Top View) 1.0k Input SOP-8* D SUFFIX CASE 751 PIN CONNECTIONS 2.2k C Z1 3.0 0-25k 19k 2 1 Q11 Q5 1 Pin: 1. Output 2. Ground 3. Input 8 Representative Schematic Diagram 15k http://onsemi.com 1 5% Output Voltage Accuracy Voltage MC78L05AC MC78L08AC MC78L09AC MC78L12AC MC78L15AC MC78L18AC MC78L24AC 5.0 8.0 9.0 12 15 18 24 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. Publication Order Number: MC78L00A/D MC78L00A Series MAXIMUM RATINGS (TA = +125C, unless otherwise noted.) Rating Input Voltage (2.6 V-8.0 V) Input Voltage (12 V-18 V) Input Voltage (24 V) Storage Temperature Range Operating Junction Temperature Range Symbol Value Unit VI 30 35 40 Vdc Tstg TJ -65 to +150 C 0 to +150 C ELECTRICAL CHARACTERISTICS (VI = 10 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, - 40C < TJ < +125C (for MC78LXXAB), 0C < TJ < +125C (for MC78LXXAC), unless otherwise noted.) MC78L05AC, AB Characteristics Output Voltage (TJ = +25C) Line Regulation (TJ = +25C, IO = 40 mA) 7.0 Vdc VI 20 Vdc 8.0 Vdc VI 20 Vdc Symbol Min Typ Max Unit VO Regline 4.8 5.0 5.2 Vdc mV - - 55 45 150 100 - - 11 5.0 60 30 4.75 4.75 - - 5.25 5.25 - - 3.8 - 6.0 5.5 - - - - 1.5 0.1 Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Output Voltage (7.0 Vdc VI 20 Vdc, 1.0 mA IO 40 mA) (VI = 10 V, 1.0 mA IO 70 mA) Input Bias Current (TJ = +25C) (TJ = +125C) Input Bias Current Change (8.0 Vdc VI 20 Vdc) (1.0 mA IO 40 mA) Regload mV Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 40 mA, f = 120 Hz, 8.0 Vdc VI 18 V, TJ = +25C) Dropout Voltage (TJ = +25C) Vn - 40 - V RR 41 49 - dB VI - VO - 1.7 - Vdc VO Vdc IIB mA IIB http://onsemi.com 2 mA MC78L00A Series ELECTRICAL CHARACTERISTICS (VI = 14 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, - 40C < TJ < +125C (for MC78LXXAB), 0C < TJ < +125C (for MC78LXXAC), unless otherwise noted.) MC78L08AC, AB Characteristics Output Voltage (TJ = +25C) Line Regulation (TJ = +25C, IO = 40 mA) 10.5 Vdc VI 23 Vdc 11 Vdc VI 23 Vdc Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Output Voltage (10.5 Vdc VI 23 Vdc, 1.0 mA IO 40 mA) (VI = 14 V, 1.0 mA IO 70 mA) Input Bias Current (TJ = +25C) (TJ = +125C) Input Bias Current Change (11 Vdc VI 23 Vdc) (1.0 mA IO 40 mA) Symbol Min Typ Max Unit VO Regline 7.7 8.0 8.3 Vdc mV - - 20 12 175 125 - - 15 8.0 80 40 7.6 7.6 - - 8.4 8.4 - - 3.0 - 6.0 5.5 - - - - 1.5 0.1 Regload mV VO Vdc IIB mA IIB mA Output Noise Voltage Vn - 60 - V (TA = +25C, 10 Hz f 100 kHz) Ripple Rejection (IO = 40 mA, RR 37 57 - dB f = 120 Hz, 12 V VI 23 V, TJ = +25C) Dropout Voltage (TJ = +25C) VI - VO - 1.7 - Vdc ELECTRICAL CHARACTERISTICS (VI = 15 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, - 40C < TJ < +125C (for MC78LXXAB), 0C < TJ < +125C (for MC78LXXAC), unless otherwise noted.) MC78L09AC, AB Symbol Min Typ Max Unit Output Voltage (TJ = +25C) Characteristics VO 8.6 9.0 9.4 Vdc Line Regulation (TJ = +25C, IO = 40 mA) 11.5 Vdc VI 24 Vdc 12 Vdc VI 24 Vdc Regline Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Regload Output Voltage (11.5 Vdc VI 24 Vdc, 1.0 mA IO 40 mA) (VI = 15 V, 1.0 mA IO 70 mA) VO Input Bias Current (TJ = +25C) (TJ = +125C) IIB mV - - 20 12 175 125 - - 15 8.0 90 40 8.5 8.5 - - 9.5 9.5 - - 3.0 - 6.0 5.5 - - - - 1.5 0.1 mV Vdc mA IIB Input Bias Current Change (11 Vdc VI 23 Vdc) (1.0 mA IO 40 mA) mA Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 60 - V Ripple Rejection (IO = 40 mA, f = 120 Hz, 13 V VI 24 V, TJ = +25C) RR 37 57 - dB VI - VO - 1.7 - Vdc Dropout Voltage (TJ = +25C) http://onsemi.com 3 MC78L00A Series ELECTRICAL CHARACTERISTICS (VI = 19 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, - 40C < TJ < +125C (for MC78LXXAB), 0C < TJ < +125C (for MC78LXXAC), unless otherwise noted.) MC78L12AC, AB Characteristics Symbol Min Typ Max Unit Output Voltage (TJ = +25C) VO 11.5 12 12.5 Vdc Line Regulation (TJ = +25C, IO = 40 mA) 14.5 Vdc VI 27 Vdc 16 Vdc VI 27 Vdc Regline Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Regload Output Voltage (14.5 Vdc VI 27 Vdc, 1.0 mA IO 40 mA) (VI = 19 V, 1.0 mA IO 70 mA) VO Input Bias Current (TJ = +25C) (TJ = +125C) IIB mV - - 120 100 250 200 - - 20 10 100 50 11.4 11.4 - - 12.6 12.6 - - 4.2 - 6.5 6.0 - - - - 1.5 0.1 mV Vdc mA IIB Input Bias Current Change (16 Vdc VI 27 Vdc) (1.0 mA IO 40 mA) mA Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 80 - V Ripple Rejection (IO = 40 mA, f = 120 Hz, 15 V VI 25 V, TJ = +25C) RR 37 42 - dB VI - VO - 1.7 - Vdc Dropout Voltage (TJ = +25C) ELECTRICAL CHARACTERISTICS (VI = 23 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, - 40C < TJ < +125C (for MC78LXXAB), S 0C < TJ < +125C (for MC78LXXAC), unless otherwise noted.) MC78L15AC, AB Characteristics Output Voltage (TJ = +25C) Line Regulation (TJ = +25C, IO = 40 mA) 17.5 Vdc VI 30 Vdc 20 Vdc VI 30 Vdc Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Output Voltage (17.5 Vdc VI 30 Vdc, 1.0 mA IO 40 mA) (VI = 23 V, 1.0 mA IO 70 mA) Symbol Min Typ Max Unit VO Regline 14.4 15 15.6 Vdc mV - - 130 110 300 250 - - 25 12 150 75 14.25 14.25 - - 15.75 15.75 - - 4.4 - 6.5 6.0 - - - - 1.5 0.1 Regload mV VO Input Bias Current (TJ = +25C) (TJ = +125C) Input Bias Current Change (20 Vdc VI 30 Vdc) (1.0 mA IO 40 mA) Vdc IIB mA IIB mA Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 90 - V Ripple Rejection (IO = 40 mA, f = 120 Hz, 18.5 V VI 28.5 V, TJ = +25C) RR 34 39 - dB VI - VO - 1.7 - Vdc Dropout Voltage (TJ = +25C) http://onsemi.com 4 MC78L00A Series ELECTRICAL CHARACTERISTICS (VI = 27 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, 0C < TJ < +125C, unless otherwise noted.) MC78L18AC Symbol Min Typ Max Unit Output Voltage (TJ = +25C) Characteristics VO 17.3 18 18.7 Vdc Line Regulation (TJ = +25C, IO = 40 mA) 21.4 Vdc VI 33 Vdc 20.7 Vdc VI 33 Vdc 22 Vdc VI 33 Vdc 21 Vdc VI 33 Vdc Regline - 45 325 - 35 275 - - 30 15 170 85 Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Output Voltage (21.4 Vdc VI 33 Vdc, 1.0 mA IO 40 mA) (20.7 Vdc VI 33 Vdc, 1.0 mA IO 40 mA) (VI = 27 V, 1.0 mA IO 70 mA) (VI = 27 V, 1.0 mA IO 70 mA) Regload mV VO Input Bias Current (TJ = +25C) (TJ = +125C) Vdc 17.1 - 18.9 17.1 - 18.9 - - 3.1 - 6.5 6.0 IIB Input Bias Current Change (22 Vdc VI 33 Vdc) (21 Vdc VI 33 Vdc) (1.0 mA IO 40 mA) Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) IIB Ripple Rejection (IO = 40 mA, f = 120 Hz, 23 V VI 33 V, TJ = +25C) Dropout Voltage (TJ = +25C) mV mA mA - - - - 1.5 0.1 Vn - 150 - V RR 33 48 - dB VI - VO - 1.7 - Vdc ELECTRICAL CHARACTERISTICS (VI = 33 V, IO = 40 mA, CI = 0.33 F, CO = 0.1 F, 0C < TJ < +125C, unless otherwise noted.) MC78L24AC Characteristics Output Voltage (TJ = +25C) Line Regulation (TJ = +25C, IO = 40 mA) 27.5 Vdc VI 38 Vdc 28 Vdc VI 80 Vdc 27 Vdc VI 38 Vdc Load Regulation (TJ = +25C, 1.0 mA IO 100 mA) (TJ = +25C, 1.0 mA IO 40 mA) Output Voltage (28 Vdc VI 38 Vdc, 1.0 mA IO 40 mA) (27 Vdc VI 38 Vdc, 1.0 mA IO 40 mA) (28 Vdc VI = 33 Vdc, 1.0 mA IO 70 mA) (27 Vdc VI 33 Vdc, 1.0 mA IO 70 mA) Symbol Min Typ Max Unit VO Regline 23 24 25 Vdc mV - - - - 50 60 - 300 350 - - 40 20 200 100 Regload mV VO Input Bias Current (TJ = +25C) (TJ = +125C) Vdc 22.8 - 25.2 22.8 - 25.2 - - 3.1 - 6.5 6.0 - - - - 1.5 0.1 IIB mA IIB Input Bias Current Change (28 Vdc VI 38 Vdc) (1.0 mA IO 40 mA) mA Output Noise Voltage (TA = +25C, 10 Hz f 100 kHz) Vn - 200 - V Ripple Rejection (IO = 40 mA, f = 120 Hz, 29 V VI 35 V, TJ = +25C) RR 31 45 - dB VI - VO - 1.7 - Vdc Dropout Voltage (TJ = +25C) http://onsemi.com 5 MC78L00A Series MC78L05AC Vout = 5.0 V TJ = 25C IO = 1.0 mA 4.0 IO = 40 mA IO = 100 mA 2.0 0 0 2.0 4.0 6.0 VI, INPUT VOLTAGE (V) 8.0 10 2.5 IO = 70 mA 2.0 1.5 IO = 40 mA 1.0 IO = 1.0 mA Dropout of Regulation is defined as when VO = 2% of VO 0.5 0 0 25 Figure 3. Input Bias Current versus Ambient Temperature 5.0 I IB , INPUT BIAS CURRENT (mA) I IB , INPUT BIAS CURRENT (mA) 125 Figure 4. Input Bias Current versus Input Voltage 4.2 4.0 3.8 3.6 3.4 MC78L05AC VI = 10 V VO= 5.0 V IO = 40 mA 3.2 3.0 4.0 MC78L05AC Vout = 5.0 V IO = 40 mA TJ = 25C 3.0 2.0 1.0 0 0 0 25 50 75 100 TA, AMBIENT TEMPERATURE (C) 125 0 10 15 20 25 VI, INPUT VOLTAGE (V) 30 35 170 R JA, THERMAL RESISTANCE JUNCTION-TO-AIR (C/W) 10,000 No Heatsink 1000 100 RJA = 200C/W PD(max) to 25C = 625 mW 10 25 5.0 3.2 150 75 100 125 130 2.4 110 IIII IIII III IIII IIII III IIIIIII Graph represents symmetrical layout 90 L 70 2.0 oz. Copper L 50 RJA 0 150 TA, AMBIENT TEMPERATURE (C) 10 20 http://onsemi.com 2.0 1.6 1.2 3.0 mm 30 L, LENGTH OF COPPER (mm) 6 2.8 PD(max) for TA = 50C 30 50 40 Figure 6. SOP-8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length Figure 5. Maximum Average Power Dissipation versus Ambient Temperature - TO-92 Type Package PD, POWER DISSIPATION (mW) 50 75 100 TJ, JUNCTION TEMPERATURE (C) 40 0.8 0.4 50 PD, MAXIMUM POWER DISSIPATION (W) VO , OUTPUT VOLTAGE (V) 8.0 6.0 Figure 2. Dropout Voltage versus Junction Temperature V I -V O , INPUT/OUTPUT DIFFERENTIAL VOLTAGE (V) Figure 1. Dropout Characteristics MC78L00A Series APPLICATIONS INFORMATION Design Considerations 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. Good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recommended. The MC78L00A 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 limits the maximum current the circuit will pass. 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. The Figure 8. 15 V Tracking Voltage Regulator Figure 7. Current Regulator +20V MC78L05A Input MC78L15A 0.33F R 0.33F IO +VO 6 Constant Current to Grounded Load 2 - MC1741 3 + 4 0.33F 6.5 The MC78L00 regulators can also be used as a current source when connected as above. In order to minimize dissipation the MC78L05C is chosen in this application. Resistor R determines the current as follows: 5.0 V IO = + IB R 10k 7 20V 10k MPS A70 -VO MPS U55 Figure 9. Positive and Negative Regulator +VI IIB = 3.8 mA over line and load changes MC78LXXA 0.33F For example, a 100 mA current source would require R to be a 50 , 1/2 W resistor and the output voltage compliance would be the input voltage less 7 V. -VI 0.33F +VO 0.1F MC79LXXA 0.1F -VO ORDERING INFORMATION Device Operating Temperature Range Package Shipping SOP-8 98 Units / Rail SOP-8 / Tape & Reel 2500 Units / Tape & Reel TO-92 2000 Units / Bag MC78LXXACPRA / MC78LXXACPRE TO-92 / Tape & Reel 2000 Units / Tape & Reel MC78LXXACPRM / MC78LXXACPRP TO-92 / Ammo Pack 2000 Units / Ammo Pack SOP-8 98 Units / Rail SOP-8 / Tape & Reel 2500 Units / Tape & Reel TO-92 2000 Units / Bag MC78LXXABPRA / MC78LXXABPRE TO-92 / Tape & Reel 2000 Units / Tape & Reel MC78LXXABPRM / MC78LXXABPRP TO-92 / Ammo Pack 2000 Units / Ammo Pack MC78LXXACD* MC78LXXACDR2* MC78LXXACP TJ = 0 to +125C MC78LXXABD* MC78LXXABDR2* MC78LXXABP* TJ = -40 to +125C XX indicates nominal voltage *Available in 5, 8, 9, 12 and 15 V devices. http://onsemi.com 7 MC78L00A Series PACKAGE DIMENSIONS A P SUFFIX PLASTIC PACKAGE CASE 29-04 ISSUE AD B R NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. DIMENSION F APPLIES BETWEEN P AND L. DIMENSION D AND J APPLY BETWEEN L AND K MINIMUM. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. P L F SEATING PLANE K DIM A B C D F G H J K L N P R V D X X G J H V C SECTION X-X 1 N N (SOP-8) D SUFFIX PLASTIC PACKAGE CASE 751-05 ISSUE R D A 8 0.25 H M B C M 1 4 h B X 45 _ e q A C SEATING PLANE L 0.10 A1 0.25 M DIM A A1 B C D E e H h L q B C B S A MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.41 0.55 0.41 0.48 1.15 1.39 2.42 2.66 0.39 0.50 12.70 --- 6.35 --- 2.04 2.66 --- 2.54 2.93 --- 3.43 --- NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETERS. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE MOLD PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. 5 E INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.022 0.016 0.019 0.045 0.055 0.095 0.105 0.015 0.020 0.500 --- 0.250 --- 0.080 0.105 --- 0.100 0.115 --- 0.135 --- MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.18 0.25 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_ S ON Semiconductor and are 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. 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