A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 D D D 3-Terminal Regulators Output Current up to 1.5 A Internal Thermal-Overload Protection D D D High Power-Dissipation Capability Internal Short-Circuit Current Limiting Output Transistor Safe-Area Compensation COMMON KC (TO-220) PACKAGE (TOP VIEW) KTE PACKAGE (TOP VIEW) COMMON OUTPUT COMMON INPUT COMMON KCS (TO-220) PACKAGE (TOP VIEW) OUTPUT COMMON INPUT OUTPUT COMMON INPUT description/ordering information This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. These applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. Each of these regulators can deliver up to 1.5 A of output current. The internal current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload. In addition to use as fixed-voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents, and also can be used as the power-pass element in precision regulators. ORDERING INFORMATION TJ VO(NOM) (V) 5 8 10 0C to 125C 12 15 24 ORDERABLE PART NUMBER PACKAGE TOP-SIDE MARKING POWER-FLEX (KTE) Reel of 2000 A7805CKTER A7805C TO-220 (KC) Tube of 50 A7805CKC TO-220 (KCS, short shoulder) Tube of 20 A7805CKCS POWER-FLEX (KTE) Reel of 2000 A7808CKTER TO-220 (KC) Tube of 50 A7808CKC TO-220 (KCS, short shoulder) Tube of 20 A7808CKCS POWER-FLEX (KTE) Reel of 2000 A7810CKTER A7810C TO-220 (KC) Tube of 50 A7810CKC A7810C POWER-FLEX (KTE) Reel of 2000 A7812CKTER A7812C TO-220 (KC) Tube of 50 A7812CKC TO-220 (KCS, short shoulder) Tube of 20 A7812CKCS POWER-FLEX (KTE) Reel of 2000 A7815CKTER TO-220 (KC) Tube of 50 A7815CKC TO-220 (KCS, short shoulder) Tube of 20 A7815CKCS POWER-FLEX (KTE) Reel of 2000 A7824CKTER A7805C A7808C A7808C A7812C A7815C A7815C A7824C A7824C Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. TO-220 (KC) Tube of 50 A7824CKC Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2002, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 schematic INPUT OUTPUT COMMON absolute maximum ratings over virtual junction temperature range (unless otherwise noted) Input voltage, VI: A7824C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V All others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V Package thermal impedance, JA (see Notes 1 and 2): KC package . . . . . . . . . . . . . . . . . . . . . . . . . . . 25C/W KCS package . . . . . . . . . . . . . . . . . . . . . . . . . 25C/W KTE package . . . . . . . . . . . . . . . . . . . . . . . . . 23C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Virtual junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 150C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) - TA)/JA. Selecting the maximum of 150C can impact reliability. 2. The package thermal impedance is calculated in accordance with JESD 51-5. recommended operating conditions VI IO TJ 2 Input voltage MIN MAX A7805C 7 25 A7808C 10.5 25 A7810C 12.5 28 A7812C 14.5 30 A7815C 17.5 30 A7824C 27 Output current A7800C series Operating virtual junction temperature POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 0 UNIT V 38 1.5 A 125 C A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 electrical characteristics at specified virtual junction temperature, VI = 10 V, IO = 500 mA (unless otherwise noted) PARAMETER Output voltage IO = 5 mA to 1 A,, PD 15 W Input voltage regulation VI = 7 V to 25 V VI = 8 V to 12 V Ripple rejection Output voltage regulation Output resistance Temperature coefficient of output voltage TJ TEST CONDITIONS VI = 8 V to 18 V, IO = 5 mA to 1.5 A Output noise voltage Dropout voltage IO = 1 A TYP 25C 4.8 5 0C to 125C 4.75 VI = 7 V to 20 V,, 25C f = 120 Hz 0C to 125C VI = 7 V to 25 V IO = 5 mA to 1 A MAX 5.2 5.25 3 100 1 50 78 UNIT V mV dB 15 100 5 50 mV 0C to 125C 0.017 0C to 125C -1.1 mV/C Bias current Bias current change 62 25C IO = 250 mA to 750 mA f = 1 kHz IO = 5 mA f = 10 Hz to 100 kHz A7805C MIN 25C 40 V 25C 2 V 25C 4.2 8 1.3 0C to t 125C 0.5 Short-circuit output current 25C 750 Peak output current 25C 2.2 mA mA mA A Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-F capacitor across the input and a 0.1-F capacitor across the output. electrical characteristics at specified virtual junction temperature, VI = 14 V, IO = 500 mA (unless otherwise noted) PARAMETER Output voltage IO = 5 mA to 1 A,, PD 15 W Input voltage regulation VI = 10.5 V to 25 V VI = 11 V to 17 V Ripple rejection Output voltage regulation Output resistance Temperature coefficient of output voltage VI = 11.5 V to 21.5 V, IO = 5 mA to 1.5 A MIN TYP MAX 25C 7.7 8 8.3 0C to 125C 7.6 VI = 10.5 V to 23 V,, 25C f = 120 Hz IO = 250 mA to 750 mA f = 1 kHz Output noise voltage IO = 5 mA f = 10 Hz to 100 kHz Dropout voltage IO = 1 A 0C to 125C 25C VI = 10.5 V to 25 V IO = 5 mA to 1 A 55 8.4 6 160 2 80 72 UNIT V mV dB 12 160 4 80 mV 0C to 125C 0.016 0C to 125C -0.8 mV/C Bias current Bias current change A7808C TJ TEST CONDITIONS 25C 52 V 25C 2 V 25C 4.3 8 1 0C to 125C 0.5 Short-circuit output current 25C 450 Peak output current 25C 2.2 mA mA mA A Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-F capacitor across the input and a 0.1-F capacitor across the output. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 electrical characteristics at specified virtual junction temperature, VI = 17 V, IO = 500 mA (unless otherwise noted) PARAMETER TEST CONDITIONS Output voltage IO = 5 mA to 1 A,, PD 15 W Input voltage regulation VI = 12.5 V to 28 V VI = 14 V to 20 V Ripple rejection Output voltage regulation Output resistance Temperature coefficient of output voltage VI = 13 V to 23 V, IO = 5 mA to 1.5 A VI = 12.5 V to 25 V,, Output noise voltage Dropout voltage IO = 1 A f = 120 Hz TYP MAX 25C 9.6 10 10.4 0C to 125C 9.5 10 10.5 7 200 2 100 0C to 125C 55 25C Bias current Bias current change MIN 25C IO = 250 mA to 750 mA f = 1 kHz IO = 5 mA f = 10 Hz to 100 kHz A7810C TJ VI = 12.5 V to 28 V IO = 5 mA to 1 A 71 UNIT V mV dB 12 200 4 100 mV 0C to 125C 0.018 0C to 125C -1 mV/C 25C 70 V 25C 2 V 25C 4.3 8 1 0C to 125C 0.5 Short-circuit output current 25C 400 Peak output current 25C 2.2 mA mA mA A Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-F capacitor across the input and a 0.1-F capacitor across the output. electrical characteristics at specified virtual junction temperature, VI = 19 V, IO = 500 mA (unless otherwise noted) PARAMETER TEST CONDITIONS Output voltage IO = 5 mA to 1 A,, PD 15 W Input voltage regulation VI = 14.5 V to 30 V VI = 16 V to 22 V Ripple rejection Output voltage regulation Output resistance Temperature coefficient of output voltage VI = 15 V to 25 V, IO = 5 mA to 1.5 A VI = 14.5 V to 27 V,, IO = 5 mA f = 10 Hz to 100 kHz Dropout voltage IO = 1 A f = 120 Hz TYP MAX 25C 11.5 12 12.5 0C to 125C 11.4 0C to 125C 25C Bias current Bias current change MIN 25C IO = 250 mA to 750 mA f = 1 kHz Output noise voltage A7812C TJ VI = 14.5 V to 30 V IO = 5 mA to 1 A 55 12.6 10 240 3 120 71 UNIT V mV dB 12 240 4 120 mV 0C to 125C 0.018 0C to 125C -1 mV/C 25C 75 V 25C 2 V 25C 4.3 8 1 0C to t 125C 0.5 Short-circuit output current 25C 350 Peak output current 25C 2.2 mA mA mA A Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-F capacitor across the input and a 0.1-F capacitor across the output. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 electrical characteristics at specified virtual junction temperature, VI = 23 V, IO = 500 mA (unless otherwise noted) PARAMETER Output voltage IO = 5 mA to 1 A,, PD 15 W Input voltage regulation VI = 17.5 V to 30 V VI = 20 V to 26 V Ripple rejection Output voltage regulation Output resistance Temperature coefficient of output voltage TJ TEST CONDITIONS VI = 18.5 V to 28.5 V, IO = 5 mA to 1.5 A Output noise voltage Dropout voltage IO = 1 A TYP 25C 14.4 15 0C to 125C 14.25 VI = 17.5 V to 30 V,, 25C f = 120 Hz 0C to 125C VI = 17.5 V to 30 V IO = 5 mA to 1 A MAX 15.6 15.75 11 300 3 150 70 UNIT V mV dB 12 300 4 150 mV 0C to 125C 0.019 0C to 125C -1 mV/C 25C 90 V 25C 2 V 25C 4.4 Bias current Bias current change 54 25C IO = 250 mA to 750 mA f = 1 kHz IO = 5 mA f = 10 Hz to 100 kHz A7815C MIN 8 1 0C to 125C 0.5 Short-circuit output current 25C 230 Peak output current 25C 2.1 mA mA mA A Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-F capacitor across the input and a 0.1-F capacitor across the output. electrical characteristics at specified virtual junction temperature, VI = 33 V, IO = 500 mA (unless otherwise noted) PARAMETER Output voltage IO = 5 mA to 1 A,, PD 15 W Input voltage regulation VI = 27 V to 38 V VI = 30 V to 36 V Ripple rejection Output voltage regulation Output resistance Temperature coefficient of output voltage TJ TEST CONDITIONS VI = 28 V to 38 V, IO = 5 mA to 1.5 A 0C to 125C IO = 5 mA f = 10 Hz to 100 kHz Dropout voltage IO = 1 A f = 120 Hz 0C to 125C 25C 23 24 22.8 VI = 27 V to 38 V IO = 5 mA to 1 A 50 MAX 25 25.2 18 480 6 240 66 UNIT V mV dB 12 480 4 240 mV 0C to 125C 0.028 0C to 125C -1.5 mV/C 25C 170 V 25C 2 V 25C 4.6 Bias current Bias current change TYP 25C IO = 250 mA to 750 mA f = 1 kHz Output noise voltage 25C VI = 27 V to 38 V,, A7824C MIN 8 1 0C to 125C 0.5 Short-circuit output current 25C 150 Peak output current 25C 2.1 mA mA mA A Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-F capacitor across the input and a 0.1-F capacitor across the output. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 APPLICATION INFORMATION A78xx +V +VO 0.33 F 0.1 F Figure 1. Fixed-Output Regulator IN + A78xx VI OUT G IL COM -VO - Figure 2. Positive Regulator in Negative Configuration (VI Must Float) Input A78xx Output R1 IO 0.33 F 0.1 F R2 ) NOTE A: The following formula is used when Vxx is the nominal output voltage (output to common) of the fixed regulator: VO +V ) xx V xx R1 I Q R2 Figure 3. Adjustable-Output Regulator A78xx Input 0.33 F R1 VO(Reg) Output IO IO = (VO/R1) + IO Bias Current Figure 4. Current Regulator 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 A7800 SERIES POSITIVE-VOLTAGE REGULATORS SLVS056H - MAY 1976 - REVISED NOVEMBER 2002 APPLICATION INFORMATION 1N4001 A7815C 20-V Input VO = 15 V 0.33 F 0.1 F 1 F 2 F 1N4001 0.1 F 1N4001 A7915C -20-V Input VO = -15 V 1N4001 Figure 5. Regulated Dual Supply operation with a load common to a voltage of opposite polarity In many cases, a regulator powers a load that is not connected to ground but, instead, is connected to a voltage source of opposite polarity (e.g., operational amplifiers, level-shifting circuits, etc.). In these cases, a clamp diode should be connected to the regulator output as shown in Figure 6. This protects the regulator from output polarity reversals during startup and short-circuit operation. A78xx +VI +VO 1N4001 or Equivalent -VO Figure 6. Output Polarity-Reversal-Protection Circuit reverse-bias protection Occasionally, the input voltage to the regulator can collapse faster than the output voltage. This can occur, for example, when the input supply is crowbarred during an output overvoltage condition. If the output voltage is greater than approximately 7 V, the emitter-base junction of the series-pass element (internal or external) could break down and be damaged. To prevent this, a diode shunt can be used as shown in Figure 7. VI A78xx +VO Figure 7. Reverse-Bias-Protection Circuit POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 MECHANICAL DATA MPFM001E - OCTOBER 1994 - REVISED JANUARY 2001 KTE (R-PSFM-G3) PowerFLEX PLASTIC FLANGE-MOUNT 0.375 (9,52) 0.080 (2,03) 0.070 (1,78) 0.365 (9,27) 0.360 (9,14) 0.050 (1,27) 0.040 (1,02) 0.350 (8,89) 0.220 (5,59) NOM 0.010 (0,25) NOM Thermal Tab (See Note C) 0.360 (9,14) 0.350 (8,89) 0.295 (7,49) NOM 0.320 (8,13) 0.310 (7,87) 0.420 (10,67) 0.410 (10,41) 1 3 0.025 (0,63) 0.031 (0,79) 0.100 (2,54) Seating Plane 0.004 (0,10) 0.010 (0,25) M 0.005 (0,13) 0.001 (0,03) 0.200 (5,08) 0.041 (1,04) 0.031 (0,79) 0.010 (0,25) NOM Gage Plane 3- 6 0.010 (0,25) 4073375/F 12/00 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. The center lead is in electrical contact with the thermal tab. Dimensions do not include mold protrusions, not to exceed 0.006 (0,15). Falls within JEDEC MO-169 PowerFLEX is a trademark of Texas Instruments. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 MECHANICAL DATA MSOT007A - JANUARY 1995 - REVISED SEPTEMBER 1995 KC (R-PSFM-T3) PLASTIC FLANGE-MOUNT PACKAGE 0.120 (3,05) 0.100 (2,54) 0.420 (10,67) 0.380 (9,65) 0.156 (3,96) DIA 0.146 (3,71) 0.185 (4,70) 0.175 (4,46) (see Note H) 0.052 (1,32) 0.048 (1,22) 0.270 (6,86) 0.230 (5,84) (see Note H) 0.625 (15,88) 0.560 (14,22) 0.125 (3,18) (see Note C) (see Note F) 0.250 (6,35) MAX 0.562 (14,27) 0.500 (12,70) 1 0.035 (0,89) 0.029 (0,74) 0.010 (0,25) M 3 0.070 (1,78) 0.045 (1,14) 0.122 (3,10) 0.102 (2,59) 0.025 (0,64) 0.012 (0,30) 0.100 (2,54) 0.200 (5,08) 4040207 / B 01/95 NOTES: A. B. C. D. E. F. G. H. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Lead dimensions are not controlled within this area. All lead dimensions apply before solder dip. The center lead is in electrical contact with the mounting tab. The chamfer is optional. Falls within JEDEC TO-220AB Tab contour optional within these dimensions POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. 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