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L79 Scheda tecnica(PDF) 8 Page - STMicroelectronics |
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L79 Scheda tecnica(HTML) 8 Page - STMicroelectronics |
8 / 28 page Electrical characteristics L79 8/28 DocID2149 Rev 22 Refer to the test circuits, TJ = 0 to 125 °C, VI = -10 V, IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified. Table 5. Electrical characteristics of L7905C Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage TJ = 25°C -4.8 -5 -5.2 V VO Output voltage IO = -5 mA to -1 A, PO ≤ 15 W VI = -8 to -20 V -4.75 -5 -5.25 V ΔVO(1) Line regulation VI = -7 to -25 V, TJ = 25°C 100 mV VI = -8 to -12 V, TJ = 25°C 50 ΔVO(1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 100 mV IO = 250 to 750 mA, TJ = 25°C 50 Id Quiescent current TJ = 25°C 3 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = -8 to -25 V 1.3 ΔVO/ΔT Output voltage drift IO = 5 mA -0.4 mV/°C eN Output noise voltage B = 10 Hz to 100 kHz, TJ = 25°C 100 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 1.4 V Isc Short circuit current 2.1 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. |
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