L7900 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 ■ THERMAL OVERLOAD PROTECTION ■ SHORT CIRCUIT PROTECTION ■ OUTPUT TRANSITION SOA PROTECTION DESCRIPTION The L7900 series of three-terminal negative regulators is available in TO-220, TO-220FP, TO-3 and D2PAK 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. TO-220 D2PAK TO-220FP TO-3 SCHEMATIC DIAGRAM February 2003 1/16 L7900 SERIES ABSOLUTE MAXIMUM RATINGS Symbol VI Parameter² DC Input Voltage Value for VO = 5 to 18V -35 for VO = 20, 24V -40 Unit V Output Current Internally Limited Ptot Power Dissipation Internally Limited Tstg Storage Temperature Range Top Operating Junction Temperature Range IO -65 to 150 °C 0 to 150 °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 D2PAK Parameter 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 Max 62.5 50 60 35 °C/W CONNECTION DIAGRAM (top view) TO-220 D2PAK 2/16 TO-220FP TO-3 L7900 SERIES ORDERING CODES TYPE TO-220 D2PAK (*) TO-220FP TO-3 OUTPUT VOLTAGE L7905C L7952C L7906C L7908C L7912C L7915C L7918C L7920C L7922C L7924C L7905CV L7952CV L7906CV L7908CV L7912CV L7915CV L7918CV L7920CV L7922CV L7924CV L7905ACD2T L7952ACD2T L7906ACD2T L7908ACD2T L7912ACD2T L7915ACD2T L7918ACD2T L7920ACD2T L7922ACD2T L7924ACD2T L7905CP L7905CT L7952CT L7906CT L7908CT L7912CT L7915CT L7918CT L7920CT L7922CT L7924CT -5 V -5.2 V -6 V -8 V -12 V -15 V -18 V -20 V -22 V -24 V L7906CP L7908CP L7912CP L7915CP L7918CP L7920CP L7924CP (*) Available in Tape & Reel with the suffix "-TR". TEST CIRCUIT ELECTRICAL CHARACTERISTICS OF L7905C (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 VO Output Voltage TJ = 25°C VO Output Voltage IO = -5 mA to -1 A VI = 8 to 20 V ∆VO(*) Line Regulation ∆VO(*) Id ∆Id Load Regulation PO ≤ 15 W Min. Typ. -4.8 -5 -5.2 V -5 -5.25 V mV VI = -7 to -25 V TJ = 25°C 100 TJ = 25°C 50 IO = 5 mA to 1.5 A TJ = 25°C 100 IO = 250 to 750 mA TJ = 25°C 50 TJ = 25°C Quiescent Current Change IO = 5 mA to 1 A VI = -8 to -25 V eN B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current mV 3 mA 0.5 mA 1.3 IO = 5 mA Output Noise Voltage SVR Unit -4.75 VI = -8 to -12 V Quiescent Current ∆VO/∆T Output Voltage Drift Max. TJ = 25°C 54 ∆VO = 100 mV -0.4 mV/°C 100 µV 60 dB 1.4 V 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, TJ = 0 to 125°C, VI = -10V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions VO Output Voltage TJ = 25°C VO Output Voltage IO = -5 mA to -1 A VI = -9 to -21 V ∆VO(*) Line Regulation ∆VO(*) Id ∆Id Load Regulation Max. Unit -5.0 -5.2 -5.4 V -4.95 -5.2 -5.45 V mV VI = -8 to -25 V TJ = 25°C 105 VI = -9 to -12 V TJ = 25°C 52 IO = 5 mA to 1.5 A TJ = 25°C 105 IO = 250 to 750 mA TJ = 25°C 52 mV TJ = 25°C 3 mA Quiescent Current Change IO = 5 mA to 1 A 0.5 mA VI = -9 to -25 V 1.3 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR Typ. Quiescent Current ∆VO/∆T Output Voltage Drift eN PO ≤ 15 W Min. TJ = 25°C 54 ∆VO = 100 mV -0.5 mV/°C 125 µV 60 dB 1.4 V 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, TJ = 0 to 125°C, VI = -11V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions Min. Typ. Max. Unit VO Output Voltage TJ = 25°C -5.75 -6 -6.25 V VO Output Voltage IO = -5 mA to -1 A PO ≤ 15 W VI = -9.5 to -21.5 V -5.7 -6 -6.3 V ∆VO(*) Line Regulation mV ∆VO(*) Id ∆Id Load Regulation Quiescent Current Quiescent Current Change ∆VO/∆T Output Voltage Drift eN VI = -8.5 to -25 V TJ = 25°C 120 VI = -9 to -15 V TJ = 25°C 60 IO = 5 mA to 1.5 A TJ = 25°C 120 IO = 250 to 750 mA TJ = 25°C 60 TJ = 25°C 3 mA IO = 5 mA to 1 A 0.5 mA VI = -9.5 to -25 V 1.3 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR mV TJ = 25°C 54 ∆VO = 100 mV -0.6 mV/°C 144 µV 60 dB 1.4 V 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, TJ = 0 to 125°C, VI = -14V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions Min. Typ. Max. Unit VO Output Voltage TJ = 25°C -7.7 -8 -8.3 V VO Output Voltage IO = -5 mA to -1 A PO ≤ 15 W VI = -11.5 to -23 V -7.6 -8 -8.4 V ∆VO(*) Line Regulation mV ∆VO(*) Id ∆Id Load Regulation VI = -10.5 to -25 V TJ = 25°C 160 VI = -11 to -17 V TJ = 25°C 80 IO = 5 mA to 1.5 A TJ = 25°C 160 IO = 250 to 750 mA TJ = 25°C 80 Quiescent Current TJ = 25°C Quiescent Current Change IO = 5 mA to 1 A VI = -11.5 to -25 V ∆VO/∆T Output Voltage Drift eN B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR 3 mA 0.5 mA 1 IO = 5 mA Output Noise Voltage mV TJ = 25°C 54 ∆VO = 100 mV -0.6 mV/°C 175 µV 60 dB 1.1 V 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, TJ = 0 to 125°C, VI = -19V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions Min. Typ. Max. Unit VO Output Voltage TJ = 25°C -11.5 -12 -12.5 V VO Output Voltage IO = -5 mA to -1 A PO ≤ 15 W VI = -15.5 to -27 V -11.4 -12 -12.6 V ∆VO(*) Line Regulation mV ∆VO(*) Id ∆Id Load Regulation Quiescent Current Quiescent Current Change ∆VO/∆T Output Voltage Drift eN VI = -14.5 to -30 V TJ = 25°C 240 VI = -16 to -22 V TJ = 25°C 120 IO = 5 mA to 1.5 A TJ = 25°C 240 IO = 250 to 750 mA TJ = 25°C 120 TJ = 25°C 3 mA IO = 5 mA to 1 A 0.5 mA VI = -15 to -30 V 1 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR mV TJ = 25°C 54 ∆VO = 100 mV -0.8 mV/°C 200 µV 60 dB 1.1 V 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 CHARACTERISTICS OF L7915C (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 Min. Typ. Max. Unit VO Output Voltage TJ = 25°C -14.4 -15 -15.6 V VO Output Voltage IO = -5 mA to -1 A PO ≤ 15 W VI = -18.5 to -30 V -14.3 -15 -15.7 V ∆VO(*) Line Regulation mV ∆VO(*) Id ∆Id Load Regulation VI = -17.5 to -30 V TJ = 25°C 300 VI = -20 to -26 V TJ = 25°C 150 IO = 5 mA to 1.5 A TJ = 25°C 300 IO = 250 to 750 mA TJ = 25°C 150 Quiescent Current TJ = 25°C Quiescent Current Change IO = 5 mA to 1 A VI = -18.5 to -30 V ∆VO/∆T Output Voltage Drift eN 3 mA 0.5 mA 1 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR mV TJ = 25°C 54 ∆VO = 100 mV -0.9 mV/°C 250 µV 60 dB 1.1 V 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, TJ = 0 to 125°C, VI = -27V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions VO Output Voltage TJ = 25°C VO Output Voltage IO = -5 mA to -1 A VI = -22 to -33 V ∆VO(*) Line Regulation ∆VO(*) Id ∆Id Load Regulation Quiescent Current Quiescent Current Change ∆VO/∆T Output Voltage Drift eN PO ≤ 15 W Typ. Max. Unit -17.3 -18 -18.7 V -17.1 -18 -18.9 V mV VI = -21 to -33 V TJ = 25°C 360 VI = -24 to -30 V TJ = 25°C 180 IO = 5 mA to 1.5 A TJ = 25°C 360 IO = 250 to 750 mA TJ = 25°C 180 TJ = 25°C mV 3 mA IO = 5 mA to 1 A 0.5 mA VI = -22 to -33 V 1 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR Min. TJ = 25°C 54 ∆VO = 100 mV -1 mV/°C 300 µV 60 dB 1.1 V 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 L7900 SERIES ELECTRICAL CHARACTERISTICS OF L7920C (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 VO Output Voltage TJ = 25°C VO Output Voltage IO = -5 mA to -1 A VI = -24 to -35 V ∆VO(*) Line Regulation ∆VO(*) Id ∆Id Load Regulation Max. -19.2 -20 -20.8 V -19 -20 -21 V mV VI = -23 to -35 V TJ = 25°C 400 VI = -26 to -32 V TJ = 25°C 200 IO = 5 mA to 1.5 A TJ = 25°C 400 IO = 250 to 750 mA TJ = 25°C 200 Unit mV TJ = 25°C 3 mA Quiescent Current Change IO = 5 mA to 1 A 0.5 mA VI = -24 to -35 V 1 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR Typ. Quiescent Current ∆VO/∆T Output Voltage Drift eN PO ≤ 15 W Min. TJ = 25°C 54 ∆VO = 100 mV -1.1 mV/°C 350 µV 60 dB 1.1 V 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, TJ = 0 to 125°C, VI = -31V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions VO Output Voltage TJ = 25°C VO Output Voltage IO = -5 mA to -1 A VI = -26 to -37 V ∆VO(*) Line Regulation ∆VO(*) Id ∆Id Load Regulation Quiescent Current Quiescent Current Change ∆VO/∆T Output Voltage Drift eN PO ≤ 15 W Typ. Max. Unit -21.1 -22 -22.9 V -20.9 -22 -23.1 V mV VI = -25 to -37 V TJ = 25°C 440 VI = -28 to -34 V TJ = 25°C 220 IO = 5 mA to 1.5 A TJ = 25°C 440 IO = 250 to 750 mA TJ = 25°C 220 TJ = 25°C mV 3 mA IO = 5 mA to 1 A 0.5 mA VI = -26 to -37 V 1 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR Min. TJ = 25°C 54 ∆VO = 100 mV -1.1 mV/°C 375 µV 60 dB 1.1 V 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, TJ = 0 to 125°C, VI = -33V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified). Symbol Parameter Test Conditions VO Output Voltage TJ = 25°C VO Output Voltage IO = -5 mA to -1 A VI = -27 to -38 V ∆VO(*) Line Regulation ∆VO(*) Id ∆Id Load Regulation Max. Unit -23 -24 -24.5 V -22.8 -24 -25.2 V mV VI = -27 to -38 V TJ = 25°C 480 VI = -30 to -36 V TJ = 25°C 240 IO = 5 mA to 1.5 A TJ = 25°C 480 IO = 250 to 750 mA TJ = 25°C 240 mV TJ = 25°C 3 mA Quiescent Current Change IO = 5 mA to 1 A 0.5 mA VI = -27 to -38 V 1 IO = 5 mA Output Noise Voltage B = 10Hz to 100KHz Supply Voltage Rejection ∆VI = 10 V f = 120Hz Vd Dropout Voltage IO = 1 A TJ = 25°C Isc Short Circuit Current SVR Typ. Quiescent Current ∆VO/∆T Output Voltage Drift eN PO ≤ 15 W Min. TJ = 25°C 54 ∆VO = 100 mV -1 mV/°C 400 µV 60 dB 1.1 V 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. APPLICATIONS INFORMATION Figure 1 : Fixed Output Regulator NOTE: 1. To 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 introduced 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 R1 + R2 VO = Vxx R2 Vxx > 3Id R2 C3 Optional for improved transient response and ripple rejection. Figure 4 : High Current Negative Regulator (-5V/4A with 5A current limiting) 9/16 L7900 SERIES Figure 5 : Typical ECL System Power Supply (-5.2V/4A) Optional dropping resistor to reduce the power dissipated in the boost transistor. 10/16 L7900 SERIES TO-3 MECHANICAL DATA mm. DIM. MIN. A inch TYP MAX. MIN. TYP. 11.85 B 0.96 MAX. 0.466 1.05 1.10 0.037 0.041 0.043 C 1.70 0.066 D 8.7 0.342 E 20.0 0.787 G 10.9 0.429 N 16.9 0.665 P 26.2 R 3.88 1.031 4.09 U 0.152 39.5 V 1.555 30.10 1.185 A P D C O N B V E G U 0.161 R P003C/C 11/16 L7900 SERIES TO-220 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 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 0.409 L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 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 P011C 12/16 L7900 SERIES TO-220FP MECHANICAL DATA mm. DIM. MIN. inch TYP MAX. MIN. TYP. MAX. A 4.40 4.60 0.173 0.181 B 2.5 2.7 0.098 0.106 D 2.5 2.75 0.098 0.108 E 0.45 0.70 0.017 0.027 F 0.75 1 0.030 0.039 F1 1.15 1.50 0.045 0.059 F2 1.15 1.50 0.045 0.059 G 4.95 5.2 0.194 0.204 G1 2.4 2.7 0.094 0.106 H 10.0 10.40 0.393 0.409 L2 16 0.630 28.6 30.6 1.126 1.204 L4 9.8 10.6 0.385 0.417 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 B D A E L3 L3 L6 F2 H G G1 ¯ F F1 L7 1 2 3 L2 L4 7012510/F 13/16 L7900 SERIES D2PAK MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067 C 0.45 0.6 0.017 0.023 C2 1.23 1.36 0.048 0.053 D 8.95 9.35 0.352 0.368 10.4 0.393 4.88 5.28 0.192 D1 E 8 10 E1 G 0.315 8.5 0.409 0.335 0.208 L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068 M 2.4 3.2 0.094 R V2 0.4 0˚ 0.126 0.016 8˚ 0˚ 8˚ P011P6G 14/16 L7900 SERIES Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 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. 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