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L7912AC Datasheet(PDF) 8 Page - STMicroelectronics |
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L7912AC Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 20 page Electrical characteristics L79xxAC 8/20 Table 5. Electrical characteristics of L7912AC (refer to the test circuits, TJ = 0 to 125 °C, VI = -19 V, 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 -11.75 -12 -12.25 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -15.5 to -27 V -11.5 -12 -12.5 V ΔVO(1) Line regulation VI = -14.5 to -30 V, TJ = 25°C 240 mV VI = -16 to -22 V, TJ = 25°C 120 ΔVO(1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 240 mV IO = 250 to 750 mA, TJ = 25°C 120 Id Quiescent current TJ = 25°C 3 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = -15 to -30 V 1 ΔVO/ΔT Output voltage drift IO = 5 mA -0.8 mV/°C eN Output noise voltage B = 10Hz to 100kHz, TJ = 25°C 200 µV SVR Supply voltage rejection ΔVI = 10 V, f = 120Hz 54 60 dB Vd Dropout voltage IO = 1 A, TJ = 25°C, ΔVO = 100 mV 1.1 V Isc Short circuit current 1.5 A Iscp Short circuit peak current TJ = 25°C 2.5 A 1. 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. |
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