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| L7900 SERIES NEGATIVE VOLTAGE REGULATORS s s 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 s s s 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. SCHEMATIC DIAGRAM TO-220 TO-220FP D2PAK TO-3 February 2003 1/16 L7900 SERIES ABSOLUTE MAXIMUM RATINGS Symbol VI IO Ptot Tstg Top DC Input Voltage Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter for VO = 5 to 18V for VO = 20, 24V Value -35 -40 Internally Limited Internally Limited -65 to 150 0 to 150 C C Unit V 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 Rthj-case Rthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max D2PAK 3 62.5 TO-220 3 50 TO-220FP 5 60 TO-3 4 35 Unit C/W C/W CONNECTION DIAGRAM (top view) TO-220 TO-220FP D2PAK TO-3 2/16 L7900 SERIES ORDERING CODES TYPE L7905C L7952C L7906C L7908C L7912C L7915C L7918C L7920C L7922C L7924C TO-220 L7905CV L7952CV L7906CV L7908CV L7912CV L7915CV L7918CV L7920CV L7922CV L7924CV D2PAK (*) L7905ACD2T L7952ACD2T L7906ACD2T L7908ACD2T L7912ACD2T L7915ACD2T L7918ACD2T L7920ACD2T L7922ACD2T L7924ACD2T TO-220FP L7905CP L7906CP L7908CP L7912CP L7915CP L7918CP L7920CP L7924CP TO-3 L7905CT L7952CT L7906CT L7908CT L7912CT L7915CT L7918CT L7920CT L7922CT L7924CT OUTPUT VOLTAGE -5 V -5.2 V -6 V -8 V -12 V -15 V -18 V -20 V -22 V -24 V (*) Available in Tape & Reel with the suffix "-TR". TEST CIRCUIT ELECTRICAL CHARACTERISTICS OF L7905C (refer to the test circuits, TJ = 0 to 125C, VI = -10V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A VI = 8 to 20 V VI = -7 to -25 V VI = -8 to -12 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -8 to -25 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -0.4 100 60 1.4 2.1 PO 15 W TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -4.8 -4.75 Typ. -5 -5 Max. -5.2 -5.25 100 50 100 50 3 0.5 1.3 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -10V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A VI = -9 to -21 V VI = -8 to -25 V VI = -9 to -12 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -9 to -25 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -0.5 125 60 1.4 2 PO 15 W TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -5.0 -4.95 Typ. -5.2 -5.2 Max. -5.4 -5.45 105 52 105 52 3 0.5 1.3 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -11V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A PO 15 W VI = -9.5 to -21.5 V VI = -8.5 to -25 V VI = -9 to -15 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -9.5 to -25 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -0.6 144 60 1.4 2 TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -5.75 -5.7 Typ. -6 -6 Max. -6.25 -6.3 120 60 120 60 3 0.5 1.3 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -14V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A PO 15 W VI = -11.5 to -23 V VI = -10.5 to -25 V VI = -11 to -17 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -11.5 to -25 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -0.6 175 60 1.1 1.5 TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -7.7 -7.6 Typ. -8 -8 Max. -8.3 -8.4 160 80 160 80 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -19V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A PO 15 W VI = -15.5 to -27 V VI = -14.5 to -30 V VI = -16 to -22 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -15 to -30 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -0.8 200 60 1.1 1.5 TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -11.5 -11.4 Typ. -12 -12 Max. -12.5 -12.6 240 120 240 120 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -23V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A PO 15 W VI = -18.5 to -30 V VI = -17.5 to -30 V VI = -20 to -26 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -18.5 to -30 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -0.9 250 60 1.1 1.3 TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -14.4 -14.3 Typ. -15 -15 Max. -15.6 -15.7 300 150 300 150 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -27V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A VI = -22 to -33 V VI = -21 to -33 V VI = -24 to -30 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -22 to -33 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -1 300 60 1.1 1.1 PO 15 W TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -17.3 -17.1 Typ. -18 -18 Max. -18.7 -18.9 360 180 360 180 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -29V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A VI = -24 to -35 V VI = -23 to -35 V VI = -26 to -32 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -24 to -35 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -1.1 350 60 1.1 0.9 PO 15 W TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -19.2 -19 Typ. -20 -20 Max. -20.8 -21 400 200 400 200 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -31V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A VI = -26 to -37 V VI = -25 to -37 V VI = -28 to -34 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -26 to -37 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -1.1 375 60 1.1 1.1 PO 15 W TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -21.1 -20.9 Typ. -22 -22 Max. -22.9 -23.1 440 220 440 220 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 125C, VI = -33V, IO = 500 mA, CI = 2.2 F, CO = 1 F unless otherwise specified). Symbol VO VO VO(*) VO(*) Id Id Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change TJ = 25C IO = -5 mA to -1 A VI = -27 to -38 V VI = -27 to -38 V VI = -30 to -36 V IO = 5 mA to 1.5 A IO = 250 to 750 mA TJ = 25C IO = 5 mA to 1 A VI = -27 to -38 V VO/T Output Voltage Drift eN SVR Vd Isc Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current IO = 5 mA B = 10Hz to 100KHz VI = 10 V IO = 1 A f = 120Hz TJ = 25C VO = 100 mV TJ = 25C 54 -1 400 60 1.1 1.1 PO 15 W TJ = 25C TJ = 25C TJ = 25C TJ = 25C Test Conditions Min. -23 -22.8 Typ. -24 -24 Max. -24.5 -25.2 480 240 480 240 3 0.5 1 mV/C V dB V A mA mA mV Unit V V mV (*) 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 DIM. A B C D E G N P R U V 30.10 3.88 10.9 16.9 26.2 4.09 39.5 1.185 0.152 0.96 mm. MIN. TYP 11.85 1.05 1.10 1.70 8.7 20.0 0.429 0.665 1.031 0.161 1.555 0.037 MAX. MIN. inch TYP. 0.466 0.041 0.043 0.066 0.342 0.787 MAX. P G A D C U V O N R P003C/C 11/16 B E L7900 SERIES TO-220 MECHANICAL DATA DIM. A C D D1 E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 DIA. 13.0 2.65 15.25 6.2 3.5 3.75 0.49 0.61 1.14 1.14 4.95 2.4 10.0 16.4 14.0 2.95 15.75 6.6 3.93 3.85 0.511 0.104 0.600 0.244 0.137 0.147 mm. MIN. 4.40 1.23 2.40 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 0.019 0.024 0.044 0.044 0.194 0.094 0.393 0.645 0.551 0.116 0.620 0.260 0.154 0.151 TYP MAX. 4.60 1.32 2.72 MIN. 0.173 0.048 0.094 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 inch TYP. MAX. 0.181 0.051 0.107 P011C 12/16 L7900 SERIES TO-220FP MECHANICAL DATA DIM. A B D E F F1 F2 G G1 H L2 L3 L4 L6 L7 DIA. 28.6 9.8 15.9 9 3 mm. MIN. 4.40 2.5 2.5 0.45 0.75 1.15 1.15 4.95 2.4 10.0 16 30.6 10.6 16.4 9.3 3.2 1.126 0.385 0.626 0.354 0.118 TYP MAX. 4.60 2.7 2.75 0.70 1 1.50 1.50 5.2 2.7 10.40 MIN. 0.173 0.098 0.098 0.017 0.030 0.045 0.045 0.194 0.094 0.393 0.630 1.204 0.417 0.645 0.366 0.126 inch TYP. MAX. 0.181 0.106 0.108 0.027 0.039 0.059 0.059 0.204 0.106 0.409 A B L3 L6 L7 F1 D F G1 E H F2 123 L2 L4 7012510/F G 13/16 L7900 SERIES D2PAK MECHANICAL DATA mm. DIM. MIN. A A1 A2 B B2 C C2 D D1 E E1 G L L2 L3 M R V2 0 4.88 15 1.27 1.4 2.4 0.4 8 0 10 8.5 5.28 15.85 1.4 1.75 3.2 0.192 0.590 0.050 0.055 0.094 0.016 8 4.4 2.49 0.03 0.7 1.14 0.45 1.23 8.95 8 10.4 0.393 0.335 0.208 0.624 0.055 0.068 0.126 TYP MAX. 4.6 2.69 0.23 0.93 1.7 0.6 1.36 9.35 MIN. 0.173 0.098 0.001 0.027 0.044 0.017 0.048 0.352 0.315 0.409 TYP. MAX. 0.181 0.106 0.009 0.036 0.067 0.023 0.053 0.368 inch P011P6G 14/16 L7900 SERIES Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 MIN. TYP. MAX. 7.086 0.519 inch 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. (c) The ST logo is a registered trademark of STMicroelectronics (c) 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. (c) http://www.st.com 16/16 |
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