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L7812CD2T-TR Datasheet(PDF) 26 Page - STMicroelectronics |
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L7812CD2T-TR Datasheet(HTML) 26 Page - STMicroelectronics |
26 / 56 page Electrical characteristics L78xx - L78xxC 26/56 Table 21. Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150 °C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 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 = 21 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 8 mA ΔId Quiescent current change IO = 5 mA to 1 A 0.5 mA VI = 21 to 33 V 1 ΔVO/ΔT Output voltage drift IO = 5 mA -1 mV/°C eN Output noise voltage B = 10 Hz to 100 kHz, TJ = 25°C 110 µV/VO SVR Supply voltage rejection VI = 22 to 32 V, f = 120 Hz 53 dB Vd Dropout voltage IO = 1 A, TJ = 25°C 2 V RO Output resistance f = 1 kHz 22 m Ω Isc Short circuit current VI = 35 V, TJ = 25°C 0.20 A Iscp Short circuit peak current TJ = 25°C 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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