AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Description Pin Assignments (Top View) AP1086 is a low dropout positive adjustable or fixed-mode regulator with 1.5A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. AP1086 is also well suited for other applications such as VGA cards. AP1086 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25V to 5.0V with 4.7 to 12V input supply by different output voltage. VIN 3 2 VOUT 1 Adj (GND) Tab is VOUT TO252-3L (Top View) 3 Features VIN 2 * * * * * * * * 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V,3.3V, 5.0V 1.4V Maximum Dropout at Full Load Current Fast Transient Response Built-in Thermal Shutdown Output Current Limiting Lead Free Packages: TO252-3L, TO263-3L, TO220-3L TO252-3L, TO263-3L, and TO220-3L: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) VOUT 1 Adj (GND) Tab is VOUT TO263-3L (Top View) 3 VIN 2 VOUT 1 Adj (GND) Tab is VOUT TO220-3L Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. Typical Application Circuit Adjustable Regulator 5V to 3.3V Fixed Mode Regulator 5V 5V C1 100uF C1 100uF Vin Vout GND Tab is Vout Vin 3.3V/1.5A VOUT=Vref x (1+R2/R1) Vout C2 100uF 2.5V/1.5A R1 121 R2 121 Adj Tab is Vout Note: Vo = V RE F AP1086 Document number: DS31028 Rev. 6 - 2 C2 100uF 1 of 10 www.diodes.com ( R2 + ) 1 R1 June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Pin Descriptions Pin Name I/O Adj (GND) VOUT O VIN I Pin # Description 1 Adjustable (Ground only for fixed mode) 2 The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. 3 The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.4V higher than VOUT in order for the device to regulate properly. Functional Block Diagram VIN 3 2 VOUT 1 Adj + - + + 1.25V CURRENT LIMIT + - Thermal Shutdown Absolute Maximum Ratings Symbol VIN TST TMJ Parameter Rating -0.3 to 12 -65 to +150 150 DC Supply Voltage Storage Temperature Maximum Junction Temperature Unit V o C o C Recommended Operating Conditions Symbol Top Parameter Operating Junction Temperature Range AP1086 Document number: DS31028 Rev. 6 - 2 2 of 10 www.diodes.com Min Max 0 125 Unit o C June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Electrical Characteristics (Under Operating Conditions) Parameter Reference Voltage Conditions AP1086-Adj AP1086-1.5 Output Voltage Line Regulation TA = 25 C, (VIN-VOUT)= 1.5V,IO = 10mA IOUT = 10mA, TA = 25 C, 3VVIN12V Min Typ. Max Unit 1.225 1.250 1.275 1.470 1.500 1.530 V AP1086-1.8 IOUT = 10mA, TA = 25 C, 3.3VVIN12V 1.764 1.800 1.836 V AP1086-2.5 IOUT = 10mA, TA = 25C, 4VVIN12V 2.450 2.500 2.550 V AP1086-3.3 IOUT = 10mA, TA = 25C, 4.8VVIN12V 3.235 3.300 3.365 V 4.900 5.000 5.100 V - - 0.2 % AP1086-5.0 IOUT = 10mA, TA = 25 C, 6.5VVIN12V AP1086-XXX IO = 10mA, VOUT+1.5V<VIN<12V AP1086-Adj VIN = 3.3V, 0mA<Io<1.5A, TA = 25 C (Note 2, 3) - - 1 % AP1086-1.5 VIN = 3V, 0mA<Io<1.5A, TA = 25C (Note 2, 3) - 12 15 mV AP1086-1.8 VIN = 3.3V, 0mA<Io<1.5A, TA = 25C (Note 2, 3) - 15 18 mV AP1086-2.5 VIN = 4V, 0mA<Io<1.5A, TA = 25C (Note 2, 3) - 20 25 mV AP1086-3.3 VIN = 5V, 0IOUT1.5A, TA = 25C, TJ = 25oC (Note 2, 3) - 26 33 mV AP1086-5.0 VIN = 8V, 0IOUT1.5A, TA = 25C, TJ = 25oC (Note 2, 3) - 40 50 mV Dropout Voltage (VIN-VOUT) AP1086-Adj/-2.5/ -3.3/-3.6/-5.0 IOUT = 1.5A, VOUT = 1%VOUT - 1.3 1.4 V Current Limit AP1086-Adj/-2.5/ -3.3/-3.6/-5.0 (VIN-VOUT) = 5V 1. 6 - - A Minimum Load Current (Note 4) AP1086-XXX o o 0 CTJ125 C - 5 10 mA Thermal Regulation TA = 25C, 30ms pulse - 0.008 0.04 %/W Load Regulation Ripple Rejection f = 120Hz,COUT = 25uF Tantalum, IOUT = 1.5A - 60 70 dB RMS Noise (% of VOUT) 10Hz f 10KHz - 0.003 - % Temperature Stability IO = 10mA - 0.5 - % JA Thermal Resistance Junction-to-Ambient (No heat sink; No air flow) TO252-3L TO263-3L TO220-3L - 101 83 86 - o C/W JC Thermal Resistance Junction-to-Case TO252-3L: Control Circuitry/Power Transistor TO263-3L: Control Circuitry/Power Transistor TO220-3L: Control Circuitry/Power Transistor - 15 0.65/2.7 0.65/2.7 - o C/W Notes: AP1086-XXX VIN = VOUT+3V 2. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18" from the package. 3. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference in input and output and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. 4. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. AP1086 Document number: DS31028 Rev. 6 - 2 3 of 10 www.diodes.com June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Functional Description Introduction The AP1086 adjustable or fixed-mode Low Dropout (LDO) regulator is a 3 terminal device which can easily be programmed by internal mask change to any voltages within the range of 1.25V to VIN-1.4V. The AP1086 only needs 1.4V differential between VIN and VOUT to maintain output regulation. In addition, the output voltage tolerances are also extremely tight and they include the transient response as part of the specification. For example, Intel VRE specification calls for a total of +/- 100mV including initial tolerance, load regulation and 0 to 1.5A load step. The AP1086 is specifically designed to meet the fast current transient needs as well as providing an accurate initial voltage, reducing the overall system cost with the need for fewer output capacitors. Load Regulation Since the AP1086 is only a 3 terminal device, it is not possible to provide true remote sensing of the output voltage at the load. But it can supply good load regulation by internal feedback bypass the external loss such as adjustable mode. Stability The AP1086 requires the use of an output capacitor as part of the frequency compensation in order to make the regulator stable. For most applications a minimum of 10uF aluminum electrolytic capacitor insures both stability and good transient response. Thermal Design The AP1086 incorporates an internal thermal shutdown that protects the device when the junction temperature exceeds the maximum allowable junction temperature. Although this device can operate with junction temperatures in the range of 150oC, it is recommended that the selected heat sink be chosen such that during maximum continuous load operation the junction temperature is kept below the temperature. Layout Consideration The output capacitors must be located as close to the VOUT terminal of the device as possible. It is recommended to use a section of a layer of the PC board as a plane to connect the VOUT pin to the output capacitors to prevent any high frequency oscillation that may result due to excessive trace inductance. AP1086 Document number: DS31028 Rev. 6 - 2 4 of 10 www.diodes.com June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Typical Performance Characteristics 0.20 2. 0 Output Voltage Deviation (%) 1. 8 1. 6 Dropout Voltage (V) 1. 4 1. 2 0 I load=1.5A -0.20 Tj = 25 oC 1. 0 -0.40 0. 8 Tj = 125 oC 0. 6 -0.80 0. 4 0. 2 0 0 0.25 0.5 0.75 1.0 1.25 -1 1.5 -25 Output Current (A) Dropout Voltage vs Output Current 0 25 50 Temperature ( oC) 75 100 125 Load Regulation vs Temperature 2 1 1.5 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 Temperature ( oC) 75 100 125 150 Output Voltage Deviation (%) Output Voltage Change (%) 0.8 1 0.6 0.4 0.2 0 2 6.5 5.5 40 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 TIME (us) 30 Document number: DS31028 Rev. 6 - 2 12 Cin=1uF Cout=10uF Tantalum Preload=100mA 20 10 0 -10 -20 2 1 0 -1 0 Line Transient Response AP1086 10 Line Regulation Load Current (A) Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage (V) Cin=1uF Cout=10uF Tantalum 8 Input Voltage (V) Percent Change in Output Voltage vs Temperature 7.5 6 4 10 20 30 40 50 60 70 80 90 100 TIME (us) Load Transient Response 5 of 10 www.diodes.com June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Ordering Information AP1086 X XX X - X Low Dropout Regulator Package D : TO252-3L K : TO263-3L T : TO220-3L Device AP1086DXXL-13 AP1086DXXG-13 AP1086KXXL-13 AP1086KXXG-13 AP1086TXXL-U AP1086TXXG-U Notes: Package Code Packaging (Note 5) D D K K T T TO252-3L TO252-3L TO263-3L TO263-3L TO220-3L TO220-3L Vout Blank = Adj 15 = 1.5V 18 = 1.8V 25 = 2.5V 33 = 3.3V 50 = 5.0V Lead Free Packing L : Lead Free G : Green U : Tube 13 : Taping & Reel Tube Part Number Quantity Suffix NA NA NA NA NA NA NA NA 50 -U 50 -U 13" Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 800/Tape & Reel -13 800/Tape & Reel -13 NA NA NA NA 5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP1086 Document number: DS31028 Rev. 6 - 2 6 of 10 www.diodes.com June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Marking Information (1) TO252-3L ( Top view ) Logo Part Number 1086 for ADJ 86-VV : 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V 50 for 5.0V 86-VV YY WW X X L : Lead Free G : Green YY : Year : 01~09 WW : Week : 01~52, 52 represents 52 and 53 week X : Internal Code (2) TO263-3L ( Top view ) Logo Part Number VV: 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V 50 for 5.0V Blank for ADJ 1086-VV YY WW X X L : Lead Free G : Green YY : Year : 01~09 WW : Week : 01~52, 52 represents 52 and 53 week X : Internal code (3) TO220-3L ( Top view ) Logo Part Number VV: 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V 50 for 5.0V Blank for ADJ AP1086 Document number: DS31028 Rev. 6 - 2 1086-VV YY WW X X L : Lead Free G : Green YY : Year : 01~09 WW : Week : 01~52, 52 represents 52 and 53 week X : Internal code 7 of 10 www.diodes.com June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Package Outline Dimensions (All Dimensions in mm) 6.354/6.80 Typ 6.58 5.6 7.2 11.0 2.25 2.0 5.40/6.20 Typ 5.57 5.6 5.20/5.50 Typ 5.35 0.88/1.27 (1) Package type: TO252-3L 1.2 0.64/1.02 Typ 0.83 Land Pattern Recommendation (Unit: mm) 0.89/ 1.14 0.45/0.58 Typ 0.52 2.18/2.40 Typ 2.29 9.00/10.40 Typ 9.70 0.51 SEE NOTE2 2.28 BSC. 4.57 BSC. 0.61 Typ SEATING PLANE 0.45/0.58 Typ 0.52 2.54 BSC. 1.27/ 1.78 Typ 1.52 3 15.7 9.1 8.65/9.65 Typ 9.15 10.9 14.61/15.88 Typ 15.24 9.65/10.29 Typ 9.97 2.92 Typ 1.30 (2) Package type: TO263-3L 1.3 0.51/0.99 Typ 0.75 0.38 Typ 2.28/2.80 Typ 2.54 AP1086 Document number: DS31028 Rev. 6 - 2 8 of 10 www.diodes.com 1.14/1.40 Typ 1.27 4.06/4.83 Typ 4.45 1.14/1.40 Typ1.27 2.54 Land Pattern Recom m endation (Unit: m m ) June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Package Outline Dimensions (Continued) (3) Package type: TO220-3L 3.53/4.09 Typ 3.81 3.55/4.85 Typ 4.20 0.51/1.40 Typ 0.95 SEATING PLANE 9.70/10.70 Typ 10.20 5.84/6.86 Typ 6.35 14.20/16.50 Typ 15.35 2.54/3.43 Typ 2.98 1.14/1.78 Typ 1.46 4.83/5.33 Typ 5.08 AP1086 Document number: DS31028 Rev. 6 - 2 12.72/14.72 Typ 13.72 3.66/6.35 Typ 5.00 0.31/1.14 0.51/1.14 Typ 0.72 Typ 0.83 2.99/2.79 Typ 2.54 9 of 10 www.diodes.com 2.03/2.92 Typ 2.48 June 2010 (c) Diodes Incorporated AP1086 1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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