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LM317CT Datasheet(PDF) 3 Page - Vishay Siliconix |
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LM317CT Datasheet(HTML) 3 Page - Vishay Siliconix |
3 / 6 page Part Number Vishay Semiconductor Document Number 74809 www.vishay.com 29-Nov-01 3 Vin VI Vout Cin 0.1 µF Co 1 µF Adjust R1 R2 1% 240 Ω 1% LM317 RL (min. Load) VOH (min. Load) VOL (max. Load) Pulse Testing Required: 1% Duty Cycle is Suggested Vin Vout Cin 0.1 µF Co 1 µF Adjust R1 R2 1% 240 Ω 1% LM317 RL VIH VIL VOH VOL Pulse Testing Required: 1% Duty Cycle is Suggested Vin Vout Cin 0.1 µF Co 1 µF Adjust R1 R2 1% 240 1% RL Pulse Testing Required: 1% Duty Cycle is Suggested To Calculate R2: Vo = ISET R2 + 1.250V Assume ISET = 5.25mA Fig. 3 – Standard Test Circuit LM317 Vin Vout Vo = 10V Cin 0.1 µF Co 1 µF Adjust R1 R2 1% 240 1% RL Fig. 4 – Ripple Rejection Test Circuit LM317 CAdj 10 µF *D1 Discharges CADJ if Output is Shorted to Ground *D1 1N4002 24V 14V f = 120HZ IADJ VI IADJ ISET Vref IL Vo Vo IL IADJ Fig. 2 – Load Regulation and ∆Iadj/Load Test Circuit Fig. 1 – Line Regulation Test Circuit Line Regulation (%/V) = x100 VOH -- VOL VOL Load Regulator (mV) = Vo(min. Load) -- Vo(max. Load) Load Regulator (%Vo) = x100 Vo(min. Load) -- Vo(max. Load) Vo(min. Load) |
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