ST L78xx L78xxC Positive voltage regulatorshandbook
Contents
1. wv L78xx 77 L78xxC Positive voltage regulators Features Output current to 1 5 A W Output voltages of 5 5 2 6 8 8 5 9 10 12 15 18 20 24 V m Thermal overload protection m Shortcircuit protection m Output transition SOA protection TO 220FP Description The L78xx series of three terminal positive regulators is available in TO 220 TO 220FP TO 3 and D PAK packages and several fixed output voltages making it useful in a wide range of applications These regulators can provide local on card regulation eliminating the distribution problems associated with single point regulation Each type employs internal current limiting thermal shut down and safe area protection making it essentially indestructible If adequate heat sinking is provided they can deliver over 1 A output current Although designed primarily as fixed voltage regulators these devices can be used with external components to obtain adjustable voltage and currents Table 1 Device summary Order codes L7805 L7810C L7805C L7812C L7852C L7815C L7806C L7818C L7808C L7820C L7885C L7824C L7809C August 2007 Rev 16 1 52 www st com L78xx L78xxC 2 52 Contents Diagram PPP 5 Pin configuration 6 Maximum2. 36 Switching 36 High input voltage 36 High input voltage ii 37 High output voltage 37 High input and output 37 Reducing power dissipation with dropping resistor 38 Remote 38 Power AM modulator unity voltage gain lo 50 5 38 Adjustable output voltage with temperature compensation 39 Light controllers Vomin Vxx VBE na 39 Protection against input short circuit with high capacitance loads 40 Drawing dimension D PAK type STD ST 45 Drawing dimension D PAK type WOOSEOK SUBCON 46 D2PAK footprint recommended data 48 3 52 List of tables L78xx L78xxC List of tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22
3. Table 7 Electrical characteristics of L7812 refer to the test circuits T 55 to 150 C 19 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 11 5 12 12 5 V lo 5 mA to 1 A Po 15 W Vo Output voltage Vj 15 5 to 27 V 11 4 12 12 6 V 14 5 to 30V Ty 25 C 120 Line regulation mV 16 to 22 V Ty 25 C 60 lo 5 mA to 1 5 A Ty 25 C 100 AV Load regulation mV lo 250 to 750 mA T 25 60 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA Vi 15 to 30 V 0 8 AVo AT Output voltage drift lg 2 5 mA 1 5 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 40 uV Vo SVR Supply voltage rejection V I 15 to 25 V f 120 Hz 61 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance 1 KHZ 18 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 A Isep Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 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 14 52 L78xx L78xxC Electrical characteristics Table 8 Electrical characteristics of L7815 refer to the test circuits 55 to 150 C
4. s ani 10 1 w 0 f Hz 75 50 5 25 50 75 100 m5 TC Ky 31 52 Typical performance L78xx L78xxC Figure 14 Load transient response Figure 15 Line transient response 62911 5 AVo i tv mv 20 0 10 20 30 40 50 us Figure 16 Quiescent current vs input voltage mA 4 0 Figure 17 Fixed output regulator 1 L78XX 525250 1 specify an output voltage substitute voltage value for 2 Although no output capacitor is need for stability it does improve transient response Required if regulator is locate an appreciable distance from power supply filter 32 52 L78xx L78xxC Typical performance Figure 18 Current regulator lo Vxx R1 lg 0 33yF Y O 1uF RL Figure 19 Circuit for increasing output voltage V D L78XX e o Vo Ry d O 33uF O 1pF gt 5 la R Vo Vxx 1 R2 R1 lgR2 CS25270 Figure 20 Adjustable output regulator 7 to 30V L7805 e o Vo it 0 33pF OF LS141 tH froko e e ky 33 52 Typical pe
5. L78XX o Vo RL 270pF ga H 2N6121 OR EQ 000 30 O O CS25230 9 52 Test circuits L78xx L78xxC Figure 7 Ripple rejection L 8XX 525240 10 52 L78xx L78xxC Electrical characteristics 5 Electrical characteristics Table 4 Electrical characteristics of L7805 refer to the test circuits Tj 55 to 150 C V 10 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 4 8 5 5 2 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage V 810 20 V 4 65 5 5 35 V VI 7 to 25 V Ty 25 C 3 50 Line regulation mV Vi 8to 12 V Tj 25 1 25 lo 2 5 mA to 1 5 A Tj 2 25 C 100 AVo Load regulation mV lo 250 to 750 mA T 25 25 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA Vi 8to25 V 0 8 AVo AT Output voltage drift lo 5 mA 0 6 mv C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 40 uV Vo SVR Supply voltage rejection V I 8 to 18 V f 120 Hz 68 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance f 1 KHz 17 lac Short circuit current V I 35 V Ty 25 0 75 1 2 A lscp Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 Load and line r
6. lt 7 Test o De UR aa 9 Electrical characteristics 11 Typical performance 31 Package mechanical data 41 Order code kien gas wa kal RR aa dx 50 Revision history 51 L78xx L78xxC List of figures List of figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Block diagram amalan Pena Kn md eR P ra ai 5 Pin connections top View 6 Schematic 6 Application 5 Custer xe OR ae 8 DC Parameter nies uswa passage denas dba Gee BA eR RP eh bur PSA 9 Load regulation sc cepin i ebore htec RR RENA as RU Oe kidaq Chaka saa 9 Ripple rejection aie dea qul Rx xw cms
7. 1 Available on request 50 52 L78xx L78xxC Revision history 9 Revision history Table 27 Revision history Date Revision Changes 21 Jun 2004 12 Document updating 03 Aug 2006 13 Order codes has been updated and new template 19 Jan 2007 14 D PAK mechanical data has been updated and add footprint data 31 May 2007 15 Order codes has been updated 29 Aug 2007 16 Added Table 1 in cover page 51 52 L78xx L78xxC Please Read Carefully Information in this document is provided solely in connection with ST products STMicroelectronics NV and its subsidiaries ST reserve the right to make changes corrections modifications or improvements to this document and the products and services described herein at any time without notice All ST products are sold pursuant to ST s terms and conditions of sale Purchasers are solely responsible for the choice selection and use of the ST products and services described herein and ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained t
8. OUTPUT GROUND GROUND PP INPUT CS05710 CS05700 TO 220 TO220FP OUTPUT GND INPUT PC11920 D2PAK Any Type Figure 3 Schematic diagram OIN Jana Re Re OOUT 5 E B 6 52 L78xx L78xxC Maximum ratings 3 Maximum ratings Table 2 Absolute maximum ratings Symbol Parameter Value Unit for Vo 5 to 18 V 35 Vj DC Input voltage V for Vo 20 24 V 40 lo Output current Internally Limited Pp Power dissipation Internally Limited TsrG Storage temperature range 65 to 150 C for L7800 55 to 150 ToP Operating junction temperature range C for L7800C 010150 Note Absolute Maximum Ratings are those values beyond which damage to the device may occur Functional operation under these condition is not implied Table 3 Thermal data Symbol Parameter D2PAK TO 220 TO 220FP TO 3 Unit Thermal resistance junction case Thermal resistance junction ambient 62 5 60 35 C W ky 7 52 Maximum ratings L78xx L78xxC Figure 4 Application circuits M L78XX Ya 0 34uP Cg 0 1 uF 8 52 ky L78xx L78xxC Test circuits 4 Test circuits Figure5 DC Parameter 178 Vo 525220 C 0 33uF Doe tur Figure 6 Load regulation
9. ROG am 10 Dropout voltage vs junction temperature 31 Peak output current vs input output differential voltage 31 Supply voltage rejection vs frequency 31 Output voltage vs junction temperature 31 Output impedance vs 31 Quiescent current vs junction 31 Load transient 32 Line transient response 32 Quiescent current vs input 32 Fixed output 1 32 Current regulator ii 33 Circuit for increasing output voltage 33 Adjustable output regulator 7 to 30 V en 33 0 5 to 10 V Regulator iesus ee wea ex S Re ba 34 High current voltage regulator 34 High output current with short circuit protection 34 Tracking voltage regulator 35 Split power supply 15 1 35 Negative output voltage
10. 24 to 35 V 19 20 21 V 22 5 to 35 V Ty 25 C 200 Line regulation mV 26 to 32 V Ty 25 C 100 lo 5 mA to 1 5 A Ty 25 C 200 AV Load regulation mV lo 250 to 750 mA Ty 25 C 100 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 24 to 35 V 0 8 AVo AT Output voltage drift lg 2 5 mA 2 5 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 40 uV Vo SVR Supply voltage rejection V I 24 to 35 V f 120 Hz 58 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance 1 KHz 24 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 A Isep Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 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 17 52 Electrical characteristics L78xx L78xxC Table 11 Electrical characteristics of L7824 refer to the test circuits TJ 55 to 150 C V 33 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 23 24 25 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage 28 to 38 V 22 8 24 25 2 V V 27 to 38 V Ty 25 C 240 Line regulation mV Vi 30 to 36 V Ty 25 C 120
11. Ty 25 C 2 V Ro Output resistance 1 KHZ 19 lac Short circuit current 35 V Ty 25 C 0 55 Isep Short circuit peak current Ty 25 2 2 A 1 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 21 52 Electrical characteristics L78xx L78xxC Table 15 Electrical characteristics of L7808C refer to the test circuits Ty 0 to 150 C Vi 14 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 7 7 8 8 3 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage Vj 10 5 to 25 V 7 6 8 8 4 V V 10 5 to 25 V Ty 25 C 160 Line regulation mV Vi 11 to 17 V Ty 25 80 lo 5 mA to 1 5 A Ty 25 C 160 AV Load regulation mV lo 250 to 750 mA T 25 80 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 10 5 to 25 V 1 AVo AT Output voltage drift 5 0 8 mv C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 52 HV Vo SVR Supply voltage rejection 11 5 to 21 5 V f 120 Hz 56 dB Va Dropout voltage lo 1 25 2 V Ro Output resistance 1 KHZ 16 lac Short circuit current 35 V Ty 25 C 0 45 Isep Short circuit p
12. 5 mA to 1 A Po lt 15 W Vo Output voltage 2110 33 V 17 1 18 18 9 V VI 21 to 33 V Ty 25 C 360 Line regulation mV 24 to 30 V Ty 25 C 180 lo 5 mA to 1 5 A Ty 25 C 360 AV Load regulation mV 250 to 750 mA 25 180 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 2 2110 33 V 1 AVo AT Output voltage drift lg 2 5 mA 1 mV C eN Output noise voltage 10 Hz to 100 KHz T 25 110 uV Vo SVR Supply voltage rejection V 22 to 32 V f 120 Hz 53 qB Va Dropout voltage lo 25 2 V Ro Output resistance 1 KHz 22 lac Short circuit current 35 V Ty 25 C 0 20 Isep Short circuit peak current Ty 25 2 1 A 1 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 28 52 L78xx L78xxC Electrical characteristics Table 22 Electrical characteristics of L7820C refer to the test circuits 0 to 150 C 28 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 19 2 20 20 8 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage 23 to 35 V 19 20 21 V 22 5 to 35 V Ty 25 C 400 Line regul
13. ST offers these devices in ECOPACK9 packages These packages have a Lead free second level interconnect The category of second Level Interconnect is marked on the package and on the inner box label in compliance with JEDEC Standard JESD97 The maximum ratings related to soldering conditions are also marked on the inner box label ECOPACK is an ST trademark ECOPACK specifications are available at www st com ky 41 52 Package mechanical data L78xx L78xxC TO 3 mechanical data Dim mm inch Min Typ Max Min Typ Max A 11 85 0 466 B 0 96 1 05 1 10 0 037 0 041 0 043 C 1 70 0 066 D E G N P R U V P003C C 42 52 Ky L78xx L78xxC Package mechanical data TO 220 A type mechanical data 0015988 N ky 43 52 Package mechanical data L78xx L78xxC TO 220FP mechanical data mm inch Dim Min Typ Max Min Typ Max F1 1 15 U UI THSF 1 50 0 045 0 059 H 10 0 10 40 0 393 0 409 L2 16 0 630 L3 28 6 UCI QC 30 6 1 126 1 204 L5 2 9 3 6 0 114 0 142 L6 15 9 16 4 0 626 0 645 L7 9 9 3 0 354 0 366 DIA 3 3 2 0 118 0 126 H i i L6 12 15 I i5 1 1 1 LL LL FE L4 F2 IW H S 7012510A H PM MEM 44 52 ky L78xx L78xxC
14. V 23 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 14 4 15 15 6 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage V 18 5 to 30 V 14 25 15 15 75 V 17 5 to 30V Ty 25 C 150 Line regulation mV 20 to 26 V Ty 25 C 75 lo 5 mA to 1 5 A Ty 25 C 150 AV Load regulation mV lo 250 to 750 mA T 25 75 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA V 18 5 to 30 V 0 8 AVo AT Output voltage drift lg 2 5 1 8 mV C eN Output noise voltage B 10 Hz to 100 KHz T 25 40 uV Vo SVR Supply voltage rejection 18 5 to 28 5 V f 120 Hz 60 dB Va Dropout voltage lo Ty 25 C 2 2 5 V Ro Output resistance 1 KHZ 19 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 A Isep Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 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 15 52 Electrical characteristics L78xx L78xxC Table 9 Electrical characteristics of L7818 refer to the test circuits 55 to 150 C V 26 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditio
15. L7812C refer to the test circuits Tj 0 to 150 C 19 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 11 5 12 12 5 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage V 14 5 to 27 V 11 4 12 12 6 V 14 5 to 30 V Ty 25 C 240 Line regulation mV 16 to 22 V Ty 25 C 120 lo 5 mA to 1 5 A Ty 25 C 240 AV Load regulation mV lo 250 to 750 mA T 25 C 120 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA V 14 5 to 30 V 1 AVo AT Output voltage drift lg 5 mA 1 mV C eN Output noise voltage B 10 Hz to 100 KHz T 25 C 75 uV Vo SVR Supply voltage rejection V I 15 to 25 V f 120 Hz 55 qB Va Dropout voltage lo Ty 25 2 V Ro Output resistance 1 KHZ 18 lac Short circuit current 35 V Ty 25 C 0 35 Isep Short circuit peak current Ty 25 2 2 A 1 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 26 52 q L78xx L78xxC Electrical characteristics Table 20 Electrical characteristics of L7815C refer to the test circuits 0 to 150 C 23 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise
16. Package mechanical data Figure 38 Drawing dimension D2PAK type STD ST L2 THERMAL PAD SEATING PLANE COPLANARITY L 0 25 GAUGE PLANE V2 Bem 0079457 L Ky 45 52 Package mechanical data L78xx L78xxC Figure 39 Drawing dimension D PAK type WOOSEOK SUBCON 12 SEATING PLANE 1 R GAUGE PLANE 0079457 L 46 52 Ti L78xx L78xxC Package mechanical data Table 24 2 mechanical data TYPE STD ST TYPE WOOSEOK SUBCON DIM mm mm MIN TYP MAX MIN TYP MAX A 4 40 4 60 4 30 4 70 A1 0 03 0 23 0 0 20 b 0 70 0 93 0 70 0 90 b2 1 14 1 70 1 17 1 37 0 45 0 60 0 45 0 50 0 60 2 1 23 1 36 1 25 1 30 1 40 D 8 95 9 35 9 9 20 9 40 D1 7 50 7 50 E 10 10 40 9 80 10 20 E1 8 50 7 50 e 2 54 2 54 el 4 88 5 28 5 08 H 15 15 85 15 15 30 15 60 J1 2 49 2 69 2 20 2 60 L 2 29 2 79 1 79 2 79 L1 1 27 1 40 1 1 40 L2 1 30 1 75 1 20 1 60 R 0 4 0 30 V2 0 8 0 3 Note The D PAK package coming from the subcontractor Wooseok is ful
17. The circuit performs well up to 100 KHz 38 52 L78xx L78xxC Typical performance Figure 35 Adjustable output voltage with temperature compensation L78XX Vo Vo Vxx 1 R2 R1 BC1 20153 C 1 CS25360 Note is connected as a diode in order to compensate the variation of the with the temperature C allows a slow rise time of the Vo Figure 36 Light controllers Vomin VBE 1 5 3890 1 5 3891 Vo falls when the light goes up Vo rises when the light goes up Ky 39 52 Typical performance L78xx L78xxC Figure 37 Protection against input short circuit with high capacitance loads Vo L 8XX O Vo a CS25410 1 Application with high capacitance loads and an output voltage greater than 6 volts need an external diode see fig 32 to protect the device against input short circuit In this case the input voltage falls rapidly while the output voltage decrease slowly The capacitance discharges by means of the Base Emitter junction of the series pass transistor in the regulator If the energy is sufficiently high the transistor may be destroyed The external diode by passes the current from the IC to ground 40 52 L78xx L78xxC Package mechanical data 7 Package mechanical data In order to meet environmental requirements
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19. lo 5 mA to 1 5 A Tj 25 240 AV Load regulation mV lo 250 to 750 mA T 25 120 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 28 to 38 V 0 8 AVo AT Output voltage drift lo 5 mA 3 mV C eN Output noise voltage B 10 Hz to 100 KHz T 25 C 40 uV Vo SVR Supply voltage rejection V 28 to 38 V f 120 Hz 56 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance 1 KHZ 28 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 A Isep Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 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 18 52 L78xx L78xxC Electrical characteristics Table 12 Electrical characteristics of L7805C refer to the test circuits Ty 0 to 150 C Vi 10 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 4 8 5 5 2 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage 2 71020 V 4 75 5 5 25 V V 7 to 25 V Ty 25 C 3 100 Line regulation mV VI 8to 12 V Tj 25 1 50 lo 5 mA to 1 5 A Ty 25 C 100 AV Load regulation mV lo 250 to 750 mA T 25 50 la Quiescent current Ty
20. specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 14 5 15 15 6 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage 17 5 to 30 V 14 25 15 15 75 V 17 5 to 30 V Ty 25 C 300 Line regulation mV 20 to 26 V Ty 25 C 150 lo 5 mA to 1 5 A Ty 25 C 300 AV Load regulation mV lo 250 to 750 mA Ty 25 C 150 la Quiescent current Ty 25 C 8 mA lo 5 mA 1A 0 5 Alg Quiescent current change mA V 17 5 to 30 V 1 AVo AT Output voltage drift lg 2 5 1 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 90 uV Vo SVR Supply voltage rejection 18 5 to 28 5 V f 120 Hz 54 dB Va Dropout voltage lo Ty 25 C 2 V Ro Output resistance 1 KHZ 19 lac Short circuit current 35 V Ty 25 C 0 23 Isep Short circuit peak current Ty 25 2 2 A 1 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 27 52 Electrical characteristics L78xx L78xxC Table 21 Electrical characteristics of L7818C refer to the test circuits 0 to 150 C 26 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 17 3 18 18 7 V lo
21. 24 52 q L78xx L78xxC Electrical characteristics Table 18 Electrical characteristics of L7810C refer to the test circuits Ty 0 to 150 C Vi 15 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 9 6 10 10 4 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage V 12 5 to 26 V 9 5 10 10 5 V 12 5 to 26 V Ty 25 C 200 Line regulation mV V 13 5 to 19 V Ty 25 C 100 lo 2 5 mA to 1 5 A Tj 25 C 200 AVo Load regulation mV lo 250 to 750 mA Ty 25 C 100 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA V 12 5 to 26 V 1 AVo AT Output voltage drift lg 2 5 1 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 70 uV Vo SVR Supply voltage rejection V 13 to 23V f 120 Hz 55 dB Va Dropout voltage lo 1 25 2 V Ro Output resistance 1 KHz 17 lac Short circuit current 35 V Ty 25 C 0 40 Isep Short circuit peak current Ty 25 2 2 A 1 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 25 52 Electrical characteristics L78xx L78xxC Table 19 Electrical characteristics of
22. 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 7 25 0 8 AVo AT Output voltage drift lo 5 mA 1 1 mv C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 40 uV Vo SVR Supply voltage rejection VI 8 to 18 V f 120 Hz 62 dB Va Dropout voltage lo 1 25 2 V Ro Output resistance 1 KHz 17 lac Short circuit current 35 V Ty 25 C 0 75 Isep Short circuit peak current Ty 25 2 2 A 1 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 19 52 Electrical characteristics L78xx L78xxC Table 13 Electrical characteristics of L7852C refer to the test circuits Ty 0 to 150 C Vi 10 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 5 0 5 2 5 4 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage Vj 81020 V 4 95 5 2 5 45 V V I 7 to 25 V Ty 25 C 3 105 Line regulation mV VI 8to 12 V Tj 25 1 52 lo 5 mA to 1 5 A Tj 25 C 105 AV Load regulation mV lo 250 to 750 mA T 25 52 la Quiescent current Ty 25 C 8 mA lo 5mAto 1A 0 5 Alg Quiescent current change mA 7 to 25 V 1 3 AVo AT Output voltage drift lo 5 mA 1 mV C eN Output no
23. Table 23 Table 24 Table 25 Table 26 Table 27 4 52 Device SUMMANY u u us s bebe baba 1 Absolute maximum 7 Thermal data 2 io deae Race eee ue hace oe a ma etes d ad a kana 7 Electrical characteristics of L7805 refer to the test circuits 55 to 150 C VI 10 V lg 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 11 Electrical characteristics of L7806 refer to the test circuits 55 to 150 C Vi 11 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 12 Electrical characteristics of L7808 refer to the test circuits 55 to 150 C Vi 14V lo 500 CI 0 33 pF Co 0 1 pF unless otherwise specified 13 Electrical characteristics of L7812 refer to the test circuits 55 to 150 C VI 19 V lg 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 14 Electrical characteristics of L7815 refer to the test circuits 55 to 150 C VI 23V lo 500 mA C 0 33 pF 0 1 pF unless otherwise specified 15 Electrical characteristics of L7818 refer to the test circuits 55 to 150 C Vi 26 V lg 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 16 Electrical characteristics of L7820 refer to the test circuits 55 to 150 C 28 V lg 500 mA C 0 33 pF Co 0 1 unles
24. a Quiescent current Tj225 C 8 mA lo 25mAto1A 0 5 Alg Quiescent current change mA V 27 to 38 V 1 AVo AT Output voltage drift lg 5 mA 1 5 mv C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 170 uV Vo SVR Supply voltage rejection V 28 to 38 V f 120 Hz 50 dB Va Dropout voltage lo 25 2 V Ro Output resistance f 1 2 28 lac Short circuit current V 35 V Ty 25 C 0 15 Isep Short circuit peak current T 25 21 A 1 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 30 52 L78xx L78xxC Typical performance 6 Typical performance Figure8 Dropout voltage vs junction Figure 9 Peak output current vs input output temperature differential voltage POUT CONDITIONS of Vo 5 75 50 25 0 5 50 75 100 15 Tj CC 0 5 0 15 20 25 Figure 10 Supply voltage rejection vs Figure 11 Output voltage vs junction frequency temperature 75 50 25 0 5 9 75 0 v5 To Figure 13 Quiescent current vs junction temp
25. ation mV 26 to 32 V Ty 25 C 200 lo 5 mA to 1 5 A Ty 25 C 400 AV Load regulation mV lo 250 to 750 mA Ty 25 C 200 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA V 2310 35 V 1 AVo AT Output voltage drift lg 2 5 mA 1 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 150 uV Vo SVR Supply voltage rejection V I 24 to 35 V f 120 Hz 52 qB Va Dropout voltage lo Ty 25 2 V Ro Output resistance 1 KHz 24 lac Short circuit current 35 V Ty 25 C 0 18 Isep Short circuit peak current Ty 25 2 1 A 1 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 29 52 Electrical characteristics L78xx L78xxC Table 23 Electrical characteristics of L7824C refer to the test circuits 0 to 150 C 33 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 23 24 25 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage 27 to 38 V 22 8 24 25 2 V V 27 to 38 V Ty 25 C 480 AVg Line regulation mV 30 to 36 V Ty 25 C 240 lo 5 mA to 1 5 A Tj 25 C 480 AVo Load regulation mV lo 250 to 750 mA T 25 C 240 l
26. eak current Ty 25 2 2 A 1 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 22 52 q L78xx L78xxC Electrical characteristics Table 16 Electrical characteristics of L7885C refer to the test circuits Ty 0 to 150 C V 14 5 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 8 2 8 5 8 8 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage V 11 to 26 V 8 1 8 5 8 9 V VI 11 to 27 V Tj 25 C 160 Line regulation mV 11 5 to 17 5 V Ty 25 C 80 lo 5 mA to 1 5 Ty 25 160 AV Load regulation mV lo 250 to 750 mA T 25 80 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 111027 V 1 AVo AT Output voltage drift 5 5 MA 0 8 mv C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 55 uV Vo SVR Supply voltage rejection Vi 12 to 22V f 120Hz 56 dB Va Dropout voltage lo Ty 25 2 V Ro Output resistance 1 KHZ 16 lac Short circuit current 35 V Ty 25 C 0 45 Isep Short circuit peak current Ty 25 2 2 A 1 Load and line regulation are specified at constant junction te
27. egulation 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 11 52 Electrical characteristics L78xx L78xxC Table 5 Electrical characteristics of 17806 refer to the test circuits Tj 55 to 150 C VI 11 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 5 75 6 6 25 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage 291021 V 5 65 6 6 35 V V I 8 to 25 V Ty 25 C 60 AVg Line regulation mV VI 9to 13V Ty 25 30 lo 5 mA to 1 5 A Ty 25 C 100 AVo Load regulation mV 250 to 750 mA Ty 25 C 30 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA Vi 9 25 0 8 AVo AT Output voltage drift lo 5 mA 0 7 mv C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 40 uV Vo SVR Supply voltage rejection Vi29to 19V f 120 Hz 65 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance f 1 KHZ 19 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 Isep Short circuit peak current T 25 1 3 2 2 3 3 A 1 Load and line regulation are specified at constant junction temperature Changes in Vo due to heating effects must be taken into account separately Pulse
28. herein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION OR INFRINGEMENT OF ANY PATENT COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE ST PRODUCTS ARE NOT RECOMMENDED AUTHORIZED OR WARRANTED FOR USE IN MILITARY AIR CRAFT SPACE LIFE SAVING OR LIFE SUSTAINING APPLICATIONS NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY DEATH OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ST PRODUCTS WHICH ARE NOT SPECIFIED AS AUTOMOTIVE GRADE MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER S OWN RISK Resale of ST products with provisions different from the statements and or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever any liability of ST ST and the ST logo are trademarks or registered trademarks of ST in various countries Information in this document supersedes and replaces
29. ise voltage B 10 Hz to 100 KHz Ty 25 C 42 HV Vo SVR Supply voltage rejection VI 8 to 18 V f 120 Hz 61 dB Va Dropout voltage lo 1 25 2 V Ro Output resistance 1 KHz 17 lac Short circuit current 35 V Ty 25 C 0 75 Isep Short circuit peak current Ty 25 2 2 A 1 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 20 52 q L78xx L78xxC Electrical characteristics Table 14 Electrical characteristics of L7806C refer to the test circuits Ty 0 to 150 C Vi 11 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 5 75 6 6 25 V lo 5 mA to 1 A Po lt 15 W Vo Output voltage V 8 to 21 V 5 7 6 6 3 V V I 8to 25 V Ty 25 C 120 Line regulation mV VI 9to 13 V Ty 25 60 lo 5 mA to 1 5 A Tj 25 C 120 AV Load regulation mV lo 250 to 750 mA T 25 60 la Quiescent current Ty 25 C 8 mA lo 5mAto 1A 0 5 Alg Quiescent current change mA 8to 25 V 1 3 AVo AT Output voltage drift lo 5 mA 0 8 mv C eN Output noise voltage B 10 Hz to 100 KHz Tj 25 C 45 uV Vo SVR Supply voltage rejection 9 19V f 120 Hz 59 dB Va Dropout voltage lo
30. ly compatible with the ST s package suggested footprint ky 47 52 Package mechanical data L78xx L78xxC Figure 40 D PAK footprint recommended data A E ae P G Table 25 Footprint data VALUES mm inch A 12 20 0 480 B 9 75 0 384 C 16 90 0 665 D 3 50 0 138 E 1 60 0 063 F 2 54 0 100 G 5 08 0 200 48 52 ky L78xx L78xxC Package mechanical data Tape amp reel D PAK P PAK D PAK A P PAK A mechanical data mm inch Note Drawing not scale ky 49 52 Order code L78xx L78xxC 8 Order code Table 26 Order code Packaging 55 D2PAK TO 220FP TO 3 L7805 L7805T L7805C L7805CV L7805CD2T TR L7805CP L7805CT L7852C L7852CV L7852CD2T TR 17852 L7852CT L7806C L7806CV L7806CD2T TR L7806CT L7808C L7808CV L7808CD2T TR L7808CP L7808CT L7885C L7885CV L7885CD2T TR L7885CP L7885CT L7809C L7809CV L7809CD2T TR L7809CP L7809CT L7810C L7810CV L7810CD2T TR L7812C L7812CV L7812CD2T TR L7812CP L7812CT L7815C L7815CV L7815CD2T TR L7815CP L7815CT L7818C L7818CV L7818CD2T TR L7818CT L7820C L7820CV L7820CD2T TR L7820CP L7820CT L7824C L7824CV L7824CD2T TR L7824CP L7824CT
31. mperature Changes in Vo due to heating effects must be taken into account separately Pulse testing with low duty cycle is used 23 52 Electrical characteristics L78xx L78xxC Table 17 Electrical characteristics of L7809C refer to the test circuits Ty 0 to 150 C Vi 15 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 8 64 9 9 36 V lo 2 5 mA to 1 lt 15 W Vo Output voltage Vj 11 5 to 26 V 8 55 9 9 45 V V 11 5 to 26 V Ty 25 C 180 Line regulation mV VI 12 to 18 V Ty 25 C 90 lo 2 5 mA to 1 5 A Tj 25 C 180 AV Load regulation mV lo 250 to 750 mA T 25 90 la Quiescent current Ty 25 C 8 mA lo 5mAto1A 0 5 Alg Quiescent current change mA V 11 5 to 26 V 1 AVo AT Output voltage drift lg 2 5 mA 1 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 70 uV Vo SVR Supply voltage rejection 12 to 23 V f 120 Hz 55 qB Va Dropout voltage lo Ty 25 2 V Ro Output resistance 1 KHZ 17 lac Short circuit current 35 V Ty 25 C 0 40 Isep Short circuit peak current Ty 25 2 2 A 1 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
32. ns Min Typ Max Unit Vo Output voltage Ty 25 17 3 18 18 7 V lo 5 mA to 1 Po 15 W Vo Output voltage V 22 to 33 V 17 1 18 18 9 V VI 21 to 33 V Ty 25 C 180 Line regulation mV 24 to 30 V Ty 25 C 90 lo 5 mA to 1 5 A Ty 25 C 180 AV Load regulation mV lo 250 to 750 mA T 25 90 la Quiescent current Ty 25 C 6 mA lo 5mAto 1A 0 5 Alg Quiescent current change mA 22 to 33 V 0 8 AVo AT Output voltage drift lo 5 mA 2 3 mV C eN Output noise voltage B 10 Hz to 100 KHz Ty 25 C 40 uV Vo SVR Supply voltage rejection V 22 to 32 V f 120 Hz 59 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance 1 KHz 22 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 A Isep Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 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 16 52 L78xx L78xxC Electrical characteristics Table 10 Electrical characteristics of L7820 refer to the test circuits TJ 55 to 150 C V 28 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 19 2 20 20 8 V lo 5 mA to 1 A Po 15 W Vo Output voltage
33. rformance L78xx L78xxC Figure 21 0 5 to 10V Regulator 13V V 25V O O Vo L7805 R4 Ci 9100 0 33UF Rs 2 o VxxR4 Ry JAIKO CHER A O 1HF 7 lt lt 17V pss p e Figure 22 High current voltage regulator Q1 BDS36 Vi R1 VBeat L78XX Yo IREa la1 Ba1 REG 0 33UF Op lo Ing Q4 Ingo BEM 525300 Figure 23 High output current with short circuit protection Rsc Q1 Q2 Ry L 8XX e o Vo 50 Rsc VeBEaz lsc 9 33UF 0 10F Q2 2N6124 6525310 ky 34 52 L78xx L78xxC Typical performance Figure 24 Tracking voltage regulator Vi Vo FO O L78XX COMMON COMMON 1 1514 V V E a 0 e O 2N6124 825320 Figure 25 Split power supply 15V 1 20V 7815 O 15V 14001 0 33uF O 1 pF 2 2uF Tur 154001 20V o e 7915 O 15 CS25410 Against potential latch up problems 35 52 Typical performance L78xx L78xxC Figure 26 Negative output vol
34. s otherwise specified 17 Electrical characteristics of L7824 refer to the test circuits 55 to 150 C Vi 33 lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 18 Electrical characteristics of L7805C refer to the test circuits Ty 0 to 150 C VI 10 V lg 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 19 Electrical characteristics of L7852C refer to the test circuits Ty 0 to 150 C VI 10 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 20 Electrical characteristics of L7806C refer to the test circuits Ty 0 to 150 C VI 11 V lo 500 mA C 0 33 pF Co 0 1 UF unless otherwise specified 21 Electrical characteristics of L7808C refer to the test circuits Ty Oto 150 C VI 14 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 22 Electrical characteristics of L7885C refer to the test circuits Ty 0 to 150 C VI 14 5 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 23 Electrical characteristics of L7809C refer to the test circuits Ty 0 to 150 C VI 15 V lo 500 mA C 0 33 pF Co 0 1 UF unless otherwise specified 24 Electrical characteristics of L7810C refer to the test circuits Ty 0 to 150 C VI 15 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 25 Electrical characteristics of L7812C refer to the tes
35. t circuits Ty 0 to 150 C VI 19 V lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 26 Electrical characteristics of L7815C refer to the test circuits Ty 0 to 150 C VI 23 V lo 500 mA C 0 33 pF Co 0 1 UF unless otherwise specified 27 Electrical characteristics of L7818C refer to the test circuits Ty 0 to 150 C VI 26 V lo 500 mA C 0 33 pF 0 1 UF unless otherwise specified 28 Electrical characteristics of L7820C refer to the test circuits Ty 0 to 150 C 28 V lo 500 mA C 0 33 pF Co 0 1 UF unless otherwise specified 29 Electrical characteristics of L7824C refer to the test circuits Ty 0 to 150 C VI 33 lo 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified 30 D2PAK mechanical data 47 Footprint data duis RECS Peru aT a kusipa PEU d E Re hu kasa id bae dus 48 ecd m aud 50 Revision history 2 kuyasqa eet ed 51 L78xx L78xxC Diagram Figure 1 Vi Diagram Block diagram STARTING CIRCUIT CURRENT GENERATOR REFERENCE VOLTAGE SOA PROTECTION ERROR AMPLIFIER THERMAL PROTECTION SERIES PASS ELEMENT CS22280 5 52 Pin configuration L78xx L78xxC 2 Pin configuration Figure 2 Pin connections top view OUTPUT
36. tage circuit Figure 27 Switching regulator 2N3789 5 269212 Figure 28 High input voltage circuit V Vo e NZ L78XX o Vo R 0 33UF O 1uF V Vin Vi Vz Vee CS25370 36 52 171 L78xx L78xxC Typical performance Figure 29 High input voltage circuit Vin L78XX Vo p y 0 33UF O 1uF mm 2 CS25330 Figure 30 High output voltage regulator 78XX o Vo Dau 01 CS25380 A Figure 31 High input and output voltage Vin Vi o L78XX Vo R o 33uF O iuF AD Vz2 Vo Vxx 24 e Ld e CS25390 1572 37 52 Typical performance L78xx L78xxC Figure 32 Reducing power dissipation with dropping resistor RL ld Vi miny Vxx VpRoP max T O 55uF O TuF CS25340 Rz Figure 33 Remote shutdown Q L78XX o Vo Ry oar Car R CS25400 Rs us 7 Figure 34 Power AM modulator unity voltage gain Ip lt 0 5 L78XX oY NN Modulation 560 Signal O 0825350 Note
37. testing with low duty cycle is used 12 52 L78xx L78xxC Electrical characteristics Table 6 Electrical characteristics of L7808 refer to the test circuits Ty 55 to 150 C 14V 500 mA C 0 33 pF Co 0 1 pF unless otherwise specified Symbol Parameter Test conditions Min Typ Max Unit Vo Output voltage Ty 25 C 7 7 8 8 3 V lo 5 mA to 1A Po lt 15 W Vo Output voltage 11 5 to 23 V 7 6 8 8 4 V V 10 5 to 25 V Ty 25 C 80 Line regulation mV Vi 11 to 17 V Ty 25 40 lo 5 mA to 1 5 A Ty 25 C 100 AV Load regulation mV lo 250 to 750 mA T 25 40 la Quiescent current Ty 25 C 6 mA lo 5mAto1A 0 5 Alg Quiescent current change mA 11 5t0 25 V 0 8 AVo AT Output voltage drift lg 2 5 mA 1 mV C eN Output noise voltage B 10 Hz to 100 KHz T 25 40 uV Vo SVR Supply voltage rejection 11 5 to 21 5 V f 120 Hz 62 dB Va Dropout voltage lo Ty 25 2 2 5 V Ro Output resistance 1 KHZ 16 lac Short circuit current V 35 V Ty 25 C 0 75 1 2 A Isep Short circuit peak current Ty 25 1 3 2 2 3 3 A 1 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 13 52 Electrical characteristics L78xx L78xxC
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