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MC7808ACT bảng dữ liệu(PDF) 10 Page - Motorola, Inc |
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MC7808ACT bảng dữ liệu(HTML) 10 Page - Motorola, Inc |
10 / 16 page MC7800, MC7800A, LM340, LM340A Series 10 MOTOROLA ANALOG IC DEVICE DATA ELECTRICAL CHARACTERISTICS (continued) (Vin = 23 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.) MC7815AC/LM340AT–15 Characteristic Symbol Min Typ Max Unit Ripple Rejection RR 60 80 – dB 18.5 Vdc ≤ Vin ≤ 28.5 Vdc, f = 120 Hz, IO = 500 mA Dropout Voltage (IO = 1.0 A, TJ = 25°C) VI – VO – 2.0 – Vdc Output Noise Voltage (TA = 25°C) Vn – 10 – µV/VO 10 Hz ≤ f ≤ 100 kHz Output Resistance f = 1.0 kHz rO – 1.2 – m Ω Short Circuit Current Limit (TA = 25°C) ISC – 0.2 – A Vin = 35 Vdc Peak Output Current (TJ = 25°C) Imax – 2.2 – A Average Temperature Coefficient of Output Voltage TCVO – –1.0 – mV/ °C ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.) MC7818C Characteristic Symbol Min Typ Max Unit Output Voltage (TJ = 25°C) VO 17.3 18 18.7 Vdc Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) VO 17.1 18 18.9 Vdc 21 Vdc ≤ Vin ≤ 33 Vdc Line Regulation, (Note 2) Regline mV 21 Vdc ≤ Vin ≤ 33 Vdc – 9.5 50 24 Vdc ≤ Vin ≤ 30 Vdc – 3.2 25 Load Regulation, (Note 2) Regload – 2.0 55 mV 5.0 mA ≤ IO ≤ 1.5 A Quiescent Current IB – 3.5 6.5 mA Quiescent Current Change ∆IB mA 21 Vdc ≤ Vin ≤ 33 Vdc – – 1.0 5.0 mA ≤ IO ≤ 1.0 A – – 0.5 Ripple Rejection RR 53 57 – dB 22 Vdc ≤ Vin ≤ 33 Vdc, f = 120 Hz Dropout Voltage (IO = 1.0 A, TJ = 25°C) ViI – VO – 2.0 – Vdc Output Noise Voltage (TA = 25°C) Vn – 10 – µV/VO 10 Hz ≤ f ≤ 100 kHz Output Resistance f = 1.0 kHz rO – 1.3 – m Ω Short Circuit Current Limit (TA = 25°C) ISC – 0.2 – A Vin = 35 Vdc Peak Output Current (TJ = 25°C) Imax – 2.2 – A Average Temperature Coefficient of Output Voltage TCVO – –1.5 – mV/ °C NOTES: 1. Tlow = –40°C for MC78XXAC, C Thigh = +125°C for MC78XXAC, C 2. 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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