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L7918AC Arkusz danych(PDF) 5 Page - STMicroelectronics |
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L7918AC Arkusz danych(HTML) 5 Page - STMicroelectronics |
5 / 11 page * 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. 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 Min. Typ. Max. Unit Vo Output Voltage Tj =25 oC -11. 75 -12 -12.25 V Vo Output Voltage Io = -5mA to -1A Po ≤ 15 W Vi = -15.5 to -27 V -11.5 -12 -12.5 V ∆Vo* Line Regulation Vi = -14.5 to -30 V Tj =25 oC Vi = -16 to -22 V Tj =25 oC 240 120 mV mV ∆Vo* Load Regulation Io = 5 to 1500 mA Tj =25 oC Io = 250 to 750 mA Tj =25 oC 240 120 mV mV Id Quiescent Current Tj =25 oC3 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 eN Output Noise Voltage B = 10Hz to 100KHz Tj =25 oC200 µV SVR Supply Voltage Rejection ∆Vi = 10 V f = 120 Hz 54 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 Peak Current Tj =25 oC2.5 A ELECTRICAL CHARACTERISTICS FOR L7915A (refer to the test circuits, Tj = 0 to 125 oC, 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 oC -14.7 -15 -15.3 V Vo Output Voltage Io = -5mA to -1A Po ≤ 15 W Vi = -18.5 to -30 V -14.4 -15 -15.6 V ∆Vo* Line Regulation Vi = -17.5 to -30 V Tj =25 oC Vi = -20 to -26 V Tj =25 oC 300 150 mV mV ∆Vo* Load Regulation Io = 5 to 1500 mA Tj =25 oC Io = 250 to 750 mA Tj =25 oC 300 150 mV mV Id Quiescent Current Tj =25 oC3 mA ∆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 eN Output Noise Voltage B = 10Hz to 100KHz Tj =25 oC250 µV SVR Supply Voltage Rejection ∆Vi = 10 V f = 120 Hz 54 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 Peak Current Tj =25 oC2.3 A L7900AC 5/11 |
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