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L7920CV 데이터시트(PDF) 10 Page - STMicroelectronics |
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L7920CV 데이터시트(HTML) 10 Page - STMicroelectronics |
10 / 24 page Electrical characteristics L79xxC 10/24 Table 9. Electrical characteristics of L7918C (refer to the test circuits, TJ = 0 to 125 °C, VI = -27 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 -17.3 -18 -18.7 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -22 to -33 V -17.1 -18 -18.9 V ΔVO(1) Line regulation VI = -21 to -33 V, TJ = 25°C 360 mV VI = -24 to -30 V, TJ = 25°C 180 ΔVO(1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 360 mV IO = 250 to 750 mA, TJ = 25°C 180 Id Quiescent current TJ = 25°C 3 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = -22 to -33 V 1 ΔVO/ΔT Output voltage drift IO = 5 mA -1 mV/°C eN Output noise voltage B = 10Hz to 100kHz, TJ = 25°C 300 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 1.1 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. Table 10. Electrical characteristics of L7920C (refer to the test circuits, TJ = 0 to 125 °C, VI = -29 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 -19.2 -20 -20.8 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -24 to -35 V -19 -20 -21 V ΔVO(1) Line regulation VI = -23 to -35 V, TJ = 25°C 400 mV VI = -26 to -32 V, TJ = 25°C 200 ΔVO(1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 400 mV IO = 250 to 750 mA, TJ = 25°C 200 Id Quiescent current TJ = 25°C 3 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = -24 to -35 V 1 ΔVO/ΔT Output voltage drift IO = 5 mA -1.1 mV/°C eN Output noise voltage B = 10Hz to 100kHz, TJ = 25°C 350 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 0.9 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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