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L7924CT Scheda tecnica(PDF) 8 Page - STMicroelectronics |
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L7924CT Scheda tecnica(HTML) 8 Page - STMicroelectronics |
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8 / 24 page  Electrical characteristics L79xxC 8/24 Table 5. Electrical characteristics of L7906C (refer to the test circuits, TJ = 0 to 125 °C, VI = -11 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 -5.75-6-6.25 V VO Output voltage IO = -5 mA to -1 A, PO ≤15 W VI = -9.5 to -21.5 V -5.7 -6 -6.3 V ΔVO(1) Line regulation VI = -8.5 to -25 V, TJ = 25°C 120 mV VI = -9 to -15 V, TJ = 25°C 60 ΔVO(1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 120 mV IO = 250 to 750 mA, TJ = 25°C 60 Id Quiescent current TJ = 25°C 3 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = -9.5 to -25 V 1.3 ΔVO/ΔT Output voltage drift IO = 5 mA -0.6 mV/°C eN Output noise voltage B = 10Hz to 100kHz, TJ = 25°C 144 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 1.4 V Isc Short circuit current 2 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 6. Electrical characteristics of L7908C (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) 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 = 10Hz to 100kHz, TJ = 25°C 175 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 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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