L7900AB/AC SERIES ± 2% NEGATIVE VOLTAGE REGULATORS .. .. OUTPUT CURRENT UP TO 1.5A OUTPUT VOLTAGES OF – 5; – 5.2; -6; – 8; –12; –15; – 18; – 20; – 22; – 24V THERMAL CIRCUIT PROTECTION OUTPUT TRANSISTOR SOA PROTECTION DESCRIPTION The L7900A series of three-terminal negative regulators is available in TO-220 package and with several output voltage. They can provide local on-card regulation, eliminating the distribution problems associated with single point regulation ; furthermore, having the same voltage options 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 adeguate heatsinking is provided, the L7900A series can deliver an output current in excess of 1.5A. Although designed primarly as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. TO-220 SCHEMATIC DIAGRAM January 1993 1/10 L7900AB/AC SERIES ABSOLUTE MAXIMUM RATING Symbol Parameter Vi DC Input VOltage Io Output Current (for Vo = -5 to -18 V) (for Vo = -20, -24) Ptot Total Power Dissipation Top Operating Junction Temperature Tstg Storage Temperature Value Unit -35 -40 Internally Limited V V Internally Limited for L7900AC for L7900AB 0 to 125 -40 to 125 o C -65 to 150 o C THERMAL DATA Rthj-case Thermal Resistance Junction-Case Rthj-amb Thermal Resistance Junction-Ambient Max Max o 3 50 C/W C/W o CONNECTION DIAGRAM AND ORDERING NUMBERS (top views) TYPE TO-220 Tj = -40 to 125 oC TO-220 Tj = 0 to 125 oC L7905A L7905ABV L7905ACV -5 V L7952A L7906A L7952ABV L7906ABV L7952ACV L7906ACV -5.2 V -6 V L7908A L7908ABV L7908ACV -8 V L7912A L7915A L7818A L7912ABV L7915ABV L7818ABV L7912ACV L7915ACV L7818ACV -12 V -15 V -18 V L7920A L7922A L7920ABV L7922ABV L7920ACV L7922ACV -20 V -22 V L7924A L7924ABV L7924ACV -24 V APPLICATION CIRCUIT 2/10 OUTPUT VOLTAGE L7900AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7905A (refer to the test circuits, Tj = 0 to 125 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -8 to -20 V ∆Vo* Line Regulation Vi = -7 to -25 V Vi = -8 to -12 V ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC 3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -8 to -25 V 1.3 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0.4 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 100 µV Id eN Po ≤ 15 W Supply Voltage Rejection ∆Vi = 10 V Io = 1 A Tj = 25 oC ∆VO = 100 mV Isc Short Circuit Current Short Circuit Peack Current -5.1 V -5.2 V 100 50 mV mV 100 50 mV mV Tj = 25 oC Tj = 25 oC Dropout Voltage Iscp -5 -5 Tj = 25 oC Tj = 25 oC Vd SVR -4.9 -4.8 f = 120 Hz 54 o Tj = 25 C 60 dB 1.4 V 2.1 A 2.5 A o ELECTRICAL CHARACTERISTICS FOR L7952A (refer to the test circuits, Tj = 0 to 125 C, Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -5.1 -5.2 -5.3 V -5 -5.2 -5.4 V 105 52 mV mV 105 52 mV mV 3 mA Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -9 to -21 V ∆Vo* Line Regulation Vi = -8 to -25 V Vi = -9 to -13 V ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -9 to -25 V 1.3 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0.5 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 125 µV Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V 60 dB Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV 1.4 V Isc Short Circuit Current 2.1 A Iscp Short Circuit Peack Current Tj = 25 oC 2.5 A SVR f = 120 Hz 54 * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used. 3/10 L7900AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7906A (refer to the test circuits, Tj = 0 to 125 oC, Vi = -11V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C -5.88 -6 -6.12 V Vo Output Voltage Io = -5 mA to -1 A Po ≤ 15 W Vi = -9.5 to -21.5 V -5.76 -6 -6.24 V ∆Vo* Line Regulation Vi = -8.5 to -25 V Tj = 25 oC Vi = -9 to -15 V Tj = 25 oC 120 60 mV mV ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA 120 60 mV mV Quiescent Current Tj = 25 oC 3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -9.5 to -25 V 1.3 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0.6 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 144 µV Id eN Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV Isc Short Circuit Current SVR Iscp Short Circuit Peack Current f = 120 Hz 54 o Tj = 25 C 60 dB 1.4 V 2 A 2.5 A o ELECTRICAL CHARACTERISTICS FOR L7908A (refer to the test circuits, Tj = 0 to 125 C, Vi = -14V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -5.1 -5.2 -5.3 V -5 -5.2 -5.4 V 160 80 mV mV 160 80 mV mV 3 mA Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -11.5 to -23 V ∆Vo* Line Regulation Vi = -10.5 to -25 V Tj = 25 oC Vi = -11 to -17 V Tj = 25 oC ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -11.5 to -25 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0.8 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 175 µV Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V 60 dB Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV 1.1 V Isc Short Circuit Current 1.5 A Iscp Short Circuit Peack Current Tj = 25 oC 2.5 A SVR f = 120 Hz 54 * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used. 4/10 L7900AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7912A (refer to the test circuits, Tj = 0 to 125 oC, Vi = -19V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -11.75 -12 -12.75 V -11.5 -12 -12.5 V 240 120 mV mV 240 120 mV mV Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -15.5 to -27 V ∆Vo* Line Regulation Vi = -14.5 to -30 V Tj = 25 oC Vi = -16 to -22 V Tj = 25 oC ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC 3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -15 to -25 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0.8 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 200 µV Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV Isc Short Circuit Current SVR Iscp Short Circuit Peack Current f = 120 Hz 54 o Tj = 25 C 60 dB 1.1 V 2.1 A 2.5 A o ELECTRICAL CHARACTERISTICS FOR L7915A (refer to the test circuits, Tj = 0 to 125 C, Vi = -23V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -14.7 -15 -15.3 V -14.4 -15 -15.6 V 300 150 mV mV 300 150 mV mV 3 mA Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -18.5 to -30 V ∆Vo* Line Regulation Vi = -17.5 to -30 V Tj = 25 oC Vi = -20 to -26 V Tj = 25 oC ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -18.5 to -30 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -0.9 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 250 µV Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V 60 dB Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV 1.1 V Isc Short Circuit Current 1.3 A Iscp Short Circuit Peack Current Tj = 25 oC 2.2 A SVR f = 120 Hz 54 * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used. 5/10 L7900AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7918A (refer to the test circuits, Tj = 0 to 125 oC, Vi = -27V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -17.64 -18 -18.36 V -17.3 -18 -18.7 V 360 180 mV mV 360 180 mV mV Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -22 to -33 V ∆Vo* Line Regulation Vi = -21 to -33 V Vi = -24 to -30 V ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC 3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -22 to -33 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV Isc Short Circuit Current SVR Iscp Short Circuit Peack Current f = 120 Hz 54 o Tj = 25 C -1 mV/oC 300 µV 60 dB 1.1 V 1.1 A 2.2 A o ELECTRICAL CHARACTERISTICS FOR L7920A (refer to the test circuits, Tj = 0 to 125 C, Vi = -29V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -19.6 -20 -20.4 V -19.2 -20 -20.8 V 400 200 mV mV 400 200 mV mV 3 mA Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -24 to -35 V ∆Vo* Line Regulation Vi = -23 to -35 V Vi = -26 to -32 V ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -24 to -35 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -1.1 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 350 µV Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Tj = 25 oC Tj = 25 oC Supply Voltage Rejection ∆Vi = 10 V 60 dB Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV 1.1 V Isc Short Circuit Current 0.9 A Iscp Short Circuit Peack Current Tj = 25 oC 2.2 A SVR f = 120 Hz 54 * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used. 6/10 L7900AB/AC SERIES ELECTRICAL CHARACTERISTICS FOR L7922A (refer to the test circuits, Tj = 0 to 125 oC, Vi = -31V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -26 to -37 V ∆Vo* Line Regulation Vi = -25 to -37 V Vi = -28 to -34 V ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC 3 mA ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -26 to -37 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA -1.1 mV/oC Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC 375 µV Id eN Po ≤ 15 W Supply Voltage Rejection ∆Vi = 10 V Io = 1 A Tj = 25 oC ∆VO = 100 mV Isc Short Circuit Current Short Circuit Peack Current -22.5 V -22.9 V 440 220 mV mV 440 220 mV mV Tj = 25 oC Tj = 25 oC Dropout Voltage Iscp -22 -22 Tj = 25 oC Tj = 25 oC Vd SVR -21.5 -21.1 f = 120 Hz 54 o Tj = 25 C 60 dB 1.1 V 1.1 A 2.2 A o ELECTRICAL CHARACTERISTICS FOR L7924A (refer to the test circuits, Tj = 0 to 125 C, Vi = -33V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Parameter Test Conditions o Min. Typ. Max. Unit -23.5 -24 -24.5 V -23 -24 -25 V 480 240 mV mV 480 240 mV mV 3 mA Vo Output Voltage Tj = 25 C Vo Output Voltage Io = -5 mA to -1 A Vi = -27 to -38 V ∆Vo* Line Regulation Vi = -27 to -38 V Vi = -30 to -36 V ∆Vo* Load Regulation Io = 5 to 1500 mA Io = 250 to 750 mA Quiescent Current Tj = 25 oC ∆Id Quiescent Current Change Io = 5 to 1000 mA 0.5 mA ∆Id Quiescent Current Change Vi = -27 to -38 V 1 mA ∆Vo ∆T Output Voltage Drift Io = 5 mA Output Noise Voltage B = 10Hz to 100KHz Tj = 25 oC Id eN Po ≤ 15 W Tj = 25 oC Tj = 25 oC Tj = 25 oC Tj = 25 oC -1 mV/oC 400 µV Supply Voltage Rejection ∆Vi = 10 V 60 dB Vd Dropout Voltage Io = 1 A Tj = 25 oC ∆VO = 100 mV 1.1 V Isc Short Circuit Current 1.1 A Iscp Short Circuit Peack Current Tj = 25 oC 2.2 A SVR f = 120 Hz 54 * Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used. 7/10 L7900AB/AC SERIES APPLICATION INFORMATION Figure 1 : Fixed Output Regulator. Figure 2 : Split Power Supply (± 15V/1A). Notes : 1. * Against potential latch-up problems. 2. 3. To specify an output voltage, substitute voltage value for ”XX”. Required for stability. For value given, capacitor must be solid tantalum. If aluminium electrolitics are used, at least ten times value shown should be selected, Ci is required if regulator is located an appreciable distance from power supply filter. To improve transient response. If large capacitors are used, a high current diode from input to output (1N4001 or similar) should be introduced to protect the device from momentary input short circuit. Figure 3 : Circuit for Increasing Output Voltage. VO ≅ VXX ⋅ R1 + R2 R2 VXX > 3Id R2 * C3 Optional for improved transient response and ripple rejection. Figure 5 : Typical ECL System Power Supply (– 5.2V/4A). * Optional dropping resistor to reduce the power dissipated in the boost transistor. 8/10 Figure 4 : High Current Negative Regulator (– 5V/4A with 5A current limiting). L7900AB/AC SERIES TO-220 MECHANICAL DATA mm DIM. MIN. inch MAX. MIN. A 4.40 TYP. 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 D1 TYP. MAX. 0.107 1.27 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 L2 0.409 16.4 0.645 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.2 15.9 0.598 0.625 L7 6.2 6.6 0.244 0.260 L9 3.5 4.2 0.137 0.165 DIA. 3.75 3.85 0.147 0.151 D1 C D A E L4 H2 G G1 F1 L2 F2 F Dia. L5 L9 L7 L6 L4 P011C 9/10 L7900AB/AC SERIES Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 10/10