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L7912CV Scheda tecnica(PDF) 9 Page - STMicroelectronics |
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L7912CV Scheda tecnica(HTML) 9 Page - STMicroelectronics |
9 / 28 page DocID2149 Rev 22 9/28 L79 Electrical characteristics 28 Refer to the test circuits, TJ = 0 to 125 °C, VI = -14 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified. Table 6. Electrical characteristics of L7908C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -7.7 -8 -8.3 V VO Output voltage IO = -5 mA to -1 A, PO ≤ 15 W VI = -11.5 to -23 V -7.6 -8 -8.4 V ΔVO(1) Line regulation VI = -10.5 to -25 V, TJ = 25°C 160 mV VI = -11 to -17 V, TJ = 25°C 80 ΔVO(1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 160 mV IO = 250 to 750 mA, TJ = 25°C 80 Id Quiescent current TJ = 25°C 3 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = -11.5 to -25 V 1 ΔVO/ΔT Output voltage drift IO = 5 mA -0.6 mV/°C eN Output noise voltage B = 10 Hz to 100 kHz, TJ = 25°C 175 µV SVR Supply voltage rejection ΔVI = 10 V, f = 120 Hz 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 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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