Maker : ETC
Part No. : 7912CT

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www.DataSheet4U.com ® L7900 SERIES NEGATIVE VOLTAGE REGULATORS s s s s s OUTPUT CURRENT UP TO 1.5 A 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, ISOWATT220 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 1 2 TO-3 1 3 D2PAK 3 1 2 TO-220 ISOWATT220 November 1999 1/13 www.DataSheet4U.com L7900 ABSOLUTE MAXIMUM RATINGS Symbol Vi Io P tot T op T st g Parameter DC Input Voltage (for VO = 5 to 18V) (for V O = 20, 24V) Output Current Power Dissipation Operating Junction Temperature Range Storage Temperature Range Value -35 -40 Internally limited Internally limited 0 to 150 - 65 to 150 o o Unit V V C C THERMAL DATA Symbol Parameter D PAK 3 62.5 2 TO-220 3 50 ISOWATT220 4 60 TO-3 4 35 Unit o o R thj- ca se Thermal Resistance Junction-case Max R thj- amb Thermal Resistance Junction-ambient Max C/W C/W CONNECTION DIAGRAM AND ORDERING NUMBERS (top view) TO-220 & ISOWATT 220 D2PAK TO-3 Type L7905C L7952C L7906C L7908C L7912C L7915C L7918C L7920C L7922C L7924C TO-220 L7905CV L7952CV L7906CV L7908CV L7912CV L7915CV L7918CV L7920CV L7922CV L7924CV D PAK (*) L7905CD2T L7952CD2T L7906CD2T L7908CD2T L7912CD2T L7915CD2T L7918CD2T L7920CD2T L7922CD2T L7924CD2T 2 ISOWATT220 L7905CP L7906CP L7908CP L7912CP L7915CP L7918CP L7920CP L7924CP TO-3 L7905CT L7952CT L7906CT L7908CT L7912CT L7915CT L7918CT L7920CT L7922CT L7924CT Output Voltage -5V -5.2V -6V -8V -12V -15V -18V -20V -22V -24V (*) AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIX APPLICATION CIRCUIT 2/13 www.DataSheet4U.com L7900 ELECTRICAL CHARACTERISTICS FOR L7905C (refer to the test circuits, T j = 0 to 150 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Vo Vo ∆V o * ∆V o * Id ∆I d ∆I d ∆ Vo ∆T eN SVR Vd Is c I scp Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peak Current Tj = 25 C o Test Conditions Tj = 25 C Io = -5 mA to -1 A Vi = 8 to 20 V Vi = -7 to -25 V Vi = -8 to -12 V Po ≤ 15 W Tj = 25 oC Tj = 25 oC Tj = 25 C Tj = 25 oC o o Min. -4.8 -4.75 Typ. -5 -5 Max. -5.2 -5.25 100 50 100 50 3 0.5 1.3 Unit V V mV mV mV mV mA mA mA mV/ oC µV dB V A A Io = 5 to 1500 mA Io = 250 to 750 mA Tj = 25 C Io = 5 to 1000 mA Vi = -8 to -25 V Io = 5 mA o -0.4 100 54 60 1.4 2.1 2.5 B = 10Hz to 100KHz Tj = 25 oC ∆Vi = 10 V f = 120 Hz o Io = 1 A Tj = 25 C ∆VO = 100 mV ELECTRICAL CHARACTERISTICS FOR L7952C (refer to the test circuits, T j = 0 to 150 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 µF, Co = 1 µF unless otherwise specified) Symbol Vo Vo ∆V o * ∆V o * Id ∆I d ∆I d ∆ Vo ∆T eN SVR Vd Is c I scp Parameter Output Voltage Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change Quiescent Current Change Output Voltage Drift Output Noise Voltage Supply Voltage Rejection Dropout Voltage Short Circuit Current Short Circuit Peak Current Tj = 25 oC Tj = 25 C Io = -5 mA to -1 A Vi = -9 to -21 V Vi = -8 to -25 V Vi = -9 to -12 V Po ...

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