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L78XX Datasheet(PDF) 9 Page - STMicroelectronics |
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L78XX Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 56 page L78xx, L78xxC, L78xxAB, L78xxAC Electrical characteristics Doc ID 2143 Rev 22 9/56 5 Electrical characteristics Refer to the test circuits, TJ = -55 to 150 °C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified. Table 4. Electrical characteristics of L7805 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, VI = 8 to 20 V 4.65 5 5.35 V ΔV O (1) Line regulation VI = 7 to 25 V, TJ = 25°C 3 50 mV VI = 8 to 12 V, TJ = 25°C 1 25 ΔV O (1) Load regulation IO = 5 mA to 1.5 A, TJ = 25°C 100 mV IO = 250 to 750 mA, TJ = 25°C 25 Id Quiescent current TJ = 25°C 6 mA ΔI d Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = 8 to 25 V 0.8 ΔV O/ΔT Output voltage drift IO = 5 mA 0.6 mV/°C eN Output noise voltage B =10 Hz to 100 kHz, TJ = 25°C 40 µV/VO SVR Supply voltage rejection VI = 8 to 18 V, f = 120 Hz 68 dB Vd Dropout voltage IO = 1 A, TJ = 25°C 2 2.5 V RO Output resistance f = 1 kHz 17 m Ω Isc Short circuit current VI = 35 V, TJ = 25°C 0.75 1.2 A Iscp Short circuit peak current TJ = 25°C 1.3 2.2 3.3 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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