ST L7900 SERIES handbook
Contents
1. Symbol Parameter Test Conditions Min Typ Max Unit Vo Output Voltage Ty 25 C 4 8 5 5 2 V Vo Output Voltage lo 2 5mAto 1A lt 15 4 75 5 5 25 V V 80 20V AVo Line Regulation Vi 7 to 25 Ty 25 C 100 mV Vi 8 to 12 V Ty 25 C 50 AVo Load Regulation lo 2 5mAto 1 5A Tj225 C 100 mV 250 to 750 mA Ty 25 C 50 lg Quiescent Current Ty 25 C 3 mA Alg Quiescent Current Change 0 5 mAto 1A 0 5 mA Vi 8 to 25 1 3 AVo AT Output Voltage Drift lo 2 5mA 0 4 mvV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 100 uV SVR Supply Voltage Rejection 10 f 120Hz 54 60 Dropout Voltage lo 1A Ty 25 C 100 1 4 V Short Circuit Current 2 1 A 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 3 16 L7900 SERIES ELECTRICAL CHARACTERISTICS OF L7952C refer to the test circuits Ty 0 to 125 C 10V lo 500 C 2 2 uF 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 Vo Output Voltage lo 2 5mAto 1A Pgx15W 4 95 5 2 5 45 V 9 to 21 V AVo Line Regulation Vi2. 79XXU 00 L7900 ky SERIES NEGATIVE VOLTAGE REGULATORS OUTPUT CURRENT UP TO 1 5A OUTPUT VOLTAGES OF 5 5 2 6 8 9 12 15 18 20 22 24V m THERMAL OVERLOAD PROTECTION m SHORT CIRCUIT PROTECTION m OUTPUT TRANSITION SOA PROTECTION DESCRIPTION The L7900 series of three terminal negative 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 furthermore having the same voltage option as the L7800 positive standard series they are particularly suited for split power supplies In addition the 5 2V is also available for ECL system If adequate heat sinking is provided they can deliver over 1 5A output current Although designed primarily as fixed voltage regulators these devices can be used with external components to obtain adjustable voltages and currents SCHEMATIC DIAGRAM February 2003 1 16 L7900 SERIES ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V DC Input Voltage for 2 5 to 18V 35 for Vo 20 24V 40 lo Output Current Internally Limited Prot Power Dissipation Internally Limited Tstg Storage Temperature Range 65 to 150 C Top Operating Junction Temperature Range 0 to 1
3. 250 to 750 mA Ty 25 C 200 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA Vi 24 to 35 V 1 AVo AT Output Voltage Drift lo 5 mA 1 1 mvV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 350 uV SVR Supply Voltage Rejection 10 f 120Hz 54 60 Dropout Voltage Ty 25 C 100 14 V lse Short Circuit Current 0 9 A 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 ELECTRICAL CHARACTERISTICS OF L7922C refer to the test circuits Ty 0 to 125 C 31V lo 500 C 2 2 UF 1 pF unless otherwise specified Symbol Parameter Test Conditions Min Typ Max Unit Vo Output Voltage Ty 25 C 21 1 22 22 9 V Vo Output Voltage 2 5mAto 1A Po lt 15W 20 9 22 23 1 V 26 to 37 V AVo Line Regulation Vi 25 to 37 V Ty 25 C 440 mV 28 to 34 V Ty 25 C 220 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 440 mV 250 to 750 mA Ty 25 C 220 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA 26 to 37 V 1 AVo AT Output Voltage Drift lo 5mA 1 1 Output Noise Voltage B 10Hz to 100KHz Ty 25 C 375 uV SVR Supply Voltage
4. 8 to 25 Ty 25 C 105 mV Vi 2 910 12 V Ty 25 C 52 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 105 mV 250 to 750 mA Ty 25 C 52 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA 9 to 25 V 1 3 AVo AT Output Voltage Drift lo 5 mA 0 5 mvV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 125 uV SVR Supply Voltage Rejection 10 f 120Hz 54 60 Dropout Voltage Ty 25 C 100 1 4 V lse Short Circuit Current 2 A 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 ELECTRICAL CHARACTERISTICS OF L7906C refer to the test circuits Ty 0 to 125 C Vj 11V lo 500 C 2 2 UF 1 pF unless otherwise specified Symbol Parameter Test Conditions Min Typ Max Unit Vo Output Voltage Ty 25 C 5 75 6 6 25 Vo Voltage lo 5 1 lt 15 5 7 6 6 3 V 9 5 to 21 5 AVo Line Regulation 8 5 to 25 V Ty 25 C 120 mV 9 15V Ty 25 60 AVo Load Regulation lo 2 5mAto 1 5 Tj225 C 120 mV 250 to 750 mA Tj225 C 60 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 10 5 mAto 1A 0 5 mA 9 5 to 25
5. Output Voltage Ty 25 C 17 3 18 18 7 V Vo Output Voltage lo 2 5mAto 1A lt 15 17 1 18 18 9 V 2210 33 V AVo Line Regulation Vi 21 to 33 V Ty 25 C 360 mV V 24 to 30 V Ty 25 C 180 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 360 mV 250 to 750 mA Ty 25 C 180 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA 2210 33 V 1 AVo AT Output Voltage Drift 5mA 1 mV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 300 uV SVR Supply Voltage Rejection AV 210V f 120Hz 54 60 dB Dropout Voltage lo 1A Ty 25 C 100 14 V lso Short Circuit Current 1 1 A 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 6 16 4 L7900 SERIES ELECTRICAL CHARACTERISTICS OF L7920C refer to the test circuits Ty 0 to 125 C V 29V lo 500 C 2 2 UF 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 Vo Voltage lo 2 5mAto 1A Pgx15W 19 20 21 V Vi 24 to 35 V AVo Line Regulation Vi 23 to 35 V Ty 25 C 400 mV 26 to 32 V Ty 25 C 200 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 400 mV
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7. Rejection AV 210V f 120Hz 54 60 dB Dropout Voltage lo 1A Ty 25 C 100 14 V lso Short Circuit Current 1 1 A 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 7 16 L7900 SERIES ELECTRICAL CHARACTERISTICS OF L7924C refer to the test circuits Ty 0 to 125 C V 33V lo 500 C 2 2 uF 1 pF unless otherwise specified Symbol Parameter Test Conditions Min Typ Max Unit Vo Output Voltage Ty 25 C 23 24 24 5 V Vo Output Voltage lo 2 5mAto 1A Pgx15W 22 8 24 25 2 V 27 to 38 V AVo Line Regulation Vi 27 to 38 V Ty 25 C 480 mV 30 to 36 V Ty 25 C 240 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 480 mV 250 to 750 mA Ty 25 C 240 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA Vi 27 to 38 V 1 AVo AT Output Voltage Drift lo 5 1 mvV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 400 uV SVR Supply Voltage Rejection 10 f 120Hz 54 60 Dropout Voltage lo21A Ty 25 C 100 14 V lso Short Circuit Current 1 1 A Load and line regulation are specified at constant junction temperature Changes in Vo due to heating
8. V 1 3 AVo AT Output Voltage Drift lp 5 mA 0 6 mv C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 144 uV SVR Supply Voltage Rejection AV 210V f 120Hz 54 60 dB Dropout Voltage lo 1A Ty 25 C 100 1 4 V lse Short Circuit Current 2 A 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 4 16 L7900 SERIES ELECTRICAL CHARACTERISTICS OF L7908C refer to the test circuits Ty 0 to 125 C Vi 14V lo 500 C 2 2 UF 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 Vo Voltage lo 2 5mAto 1A lt 15 7 6 8 8 4 V Vi 11 5 to 23 V AVo Line Regulation 10 5 to 25 V Tj225 C 160 mV Vi 11 to 17 V Ty 25 C 80 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 160 mV 250 to 750 mA Ty 25 C 80 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA 11 5 25 V 1 AVo AT Output Voltage Drift lo 5 mA 0 6 mvV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 175 uV SVR Supply Voltage Rejection 10 f 120Hz 54 60 Dropout Voltage Ty 25 C 100 14 V lse Shor
9. 0 161 1 555 437 11 16 L7900 SERIES TO 220 MECHANICAL DATA mm inch BIN MIN TYP MAX MIN TYP MAX A 4 40 4 60 0 173 0 181 C 1 23 1 82 0 048 0 051 D 2 40 2 72 0 094 0 107 D1 1 27 0 050 F 0 61 0 88 0 024 0 034 F2 1 14 1 70 004 0 067 G 4 95 5 15 0 194 0 203 G1 24 2 7 0 094 fs 0 106 H2 10 0 10 40 0 393 0 409 L4 13 0 14 0 0 511 0 551 L6 15 25 15 75 0 600 0 620 L7 6 2 6 6 0 244 0 260 L9 3 5 3 93 0 137 0 154 DIA 3 75 3 85 0 147 0 151 L6 L4 g P011C 4 12 16 L7900 SERIES TO 220FP MECHANICAL DATA L2 L4 701251 0 F 3 13 16 L7900 SERIES D PAK MECHANICAL DATA mm inch DIM MIN TYP MAX MIN TYP MAX 0 315 E1 8 5 0 335 G 4 88 5 28 0 192 0 208 M 2 4 3 2 0 094 0 126 R 0 4 0 016 V2 0 8 0 8 M ee PM Mm 12 Di i 4 1 13 1 Lc GATE Note 7 B2 0 Ge COPLANARITY SCALE 5 1 R FLAT ZONE NO LESS THAN 2 mm 011P6G 14 16 7 L7900 SERIES Tape amp Reel D2PAK P2PAK D2PAK A P2PAK A MECHANICAL DATA mm inch DIM MIN TYP MAX MI
10. 50 C Absolute Maximum Ratings are those values beyond which damage to the device may occur Functional operation under these condition is not implied THERMAL DATA Symbol Parameter D PAK TO 220 TO 220FP TO 3 Unit Rthj case Thermal Resistance Junction case Max 3 3 5 4 C W Rthj amb Thermal Resistance Junction ambient 62 5 50 60 35 C W CONNECTION DIAGRAM top view LL 2 INPUT J GROUND J OUTPUT INPUT J GROUND 512780 512790 220 220 OUTPUT GND PC11970 2 16 L7900 SERIES ORDERING CODES TYPE TO 220 D2PAK TO 220FP TO 3 OUTPUT VOLTAGE L7905C L7905CV L7905ACD2T L7905CP L7905CT 5 179526 L7952CV L7952ACD2T L7952CT 5 2 V L7906C L7906CV L7906ACD2T L7906CP L7906CT 6 V L7908C L7908CV L7908ACD2T L7908CP L7908CT 8 V L7912C L7912CV L7912ACD2T L7912CP L7912CT 12 V L7915C L7915CV L7915ACD2T L7915CP L7915CT 15 V L7918C L7918CV L7918ACD2T L7918CP L7918CT 18 V L7920C L7920CV L7920ACD2T L7920CP L7920CT 20 V L7922C L7922CV L7922ACD2T L7922CT 22V L7924C L7924CV L7924ACD2T L7924CP L7924CT 24V Available in Tape amp Reel with the suffix TR TEST CIRCUIT 5 5036 1 ELECTRICAL CHARACTERISTICS OF 17905 refer to the test circuits 0 to 125 C V 10V 500 mA C 2 2 pF 1 pF unless otherwise specified
11. ARACTERISTICS OF L7915C refer to the test circuits Ty 0 to 125 C V 23V lo 500 C 2 2 uF 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 Vo Output Voltage lo 2 5mAto 1A Pgx15W 14 3 15 15 7 V Vi 18 5 to 30 V AV o Line Regulation 17 5 to 30 V Ty 25 C 300 mV V 20 to 26 V Ty 25 C 150 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 300 mV 250 to 750 mA Ty 25 C 150 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 1 0 5 mA 18 5 to 30 V 1 AVo AT Output Voltage Drift lo 5 mA 0 9 Output Noise Voltage B 10Hz to 100KHz Ty 25 C 250 uV SVR Supply Voltage Rejection 10 f 120Hz 54 60 Dropout Voltage Ty 25 C 100 14 V lse Short Circuit Current 1 3 A 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 ELECTRICAL CHARACTERISTICS OF L7918C refer to the test circuits Ty 0 to 125 C V 27V lo 500 C 2 2 uF 1 pF unless otherwise specified Symbol Parameter Test Conditions Min Typ Max Unit Vo
12. N TYP MAX A 180 7 086 C 0 504 0 512 0 519 D 20 2 0 795 N 60 2 362 T 144 0 567 Ao 0 413 0 417 0 421 Bo 0 618 0 622 0 626 Ko 0 189 0 193 0 197 Po 0 153 0 157 0 161 P 119 12 0 124 0 468 0 472 0 476 N A Ko Note Drawing not in scale 15 16 L7900 SERIES Information furnished is believed to be accurate and reliable However STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics Specifications mentioned in this publication are subject to change without notice This publication supersedes and replaces all information previously supplied STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics The ST logo is a registered trademark of STMicroelectronics 2003 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia Brazil Canada China Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Switzerland United Kingdom United States http
13. effects must be taken into account separately Pulse testing with low duty cycle is used APPLICATIONS INFORMATION Figure 1 Fixed Output Regulator 5 5036 1 1 specify an output voltage substitute voltage value for XX 2 Required for stability For value given capacitor must be solid tantalum If aluminium electrolytics are used at least ten times value should be selected C1 is required if regulator is located an appreciable distance from power supply filter 3 To improve transient response If large capacitors are used a high current diode from input to output 1N4001 or similar should be intro duced to protect the device from momentary input short circuit 8 16 L7900 SERIES Figure 2 Split Power Supply 15V 1A Against potential latch up problems Figure 3 Circuit for Increasing Output Voltage C3 Optional for improved transient response and ripple rejection Figure 4 High Current Negative Regulator 5V 4A with 5A current limiting 437 9 16 L7900 SERIES Figure 5 Typical ECL System Power Supply 5 2V 4A 5 504011 Optional dropping resistor to reduce the power dissipated the boost transistor 10 16 437 L7900 SERIES TO 3 MECHANICAL DATA mm inch MN TYP MAX MIN TYP MAX B 1 05 1 10 0 037 0 041 0 043 DIM C 1 70 0 066 N 169 0 665 P 26 2 1 031 R 3 88 4 09 0 152
14. t Circuit Current 1 5 A 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 ELECTRICAL CHARACTERISTICS OF L7912C refer to the test circuits Ty 0 to 125 C V 19V lo 500 C 2 2 UF 1 pF unless otherwise specified Symbol Parameter Test Conditions Min Typ Max Unit Vo Output Voltage Ty 25 C 11 5 12 12 5 Vo Output Voltage 2 5mAto 1A Po lt 15W 11 4 12 12 6 V 15 5 to 27 V AVo Line Regulation 14 5 to 30 V Ty 25 C 240 mV 16 to 22 V Ty 25 120 AVo Load Regulation lo 2 5mAto 1 5 Ty 25 C 240 mV 250 to 750 mA Ty 25 C 120 lg Quiescent Current Ty 25 C 3 mA Quiescent Current Change 5 mAto 1A 0 5 mA 15 to 30 V 1 AVo AT Output Voltage Drift lp 5 mA 0 8 mV C eN Output Noise Voltage B 10Hz to 100KHz Ty 25 C 200 uV SVR Supply Voltage Rejection AV 210V f 120Hz 54 60 dB Dropout Voltage lo 1A Ty 25 C 100 14 V lso Short Circuit Current 1 5 A 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 5 16 L7900 SERIES ELECTRICAL CH
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ST L7900 SERIES handbook