전자부품 데이터시트 검색엔진 |
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LM317T 데이터시트(PDF) 4 Page - ON Semiconductor |
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LM317T 데이터시트(HTML) 4 Page - ON Semiconductor |
4 / 12 page LM317, NCV317 http://onsemi.com 4 Figure 4. Load Regulation and DIAdj/Load Test Circuit Figure 5. Standard Test Circuit Figure 6. Ripple Rejection Test Circuit VO LM317 VO (min Load) − VO (max Load) *Pulse testing required. * 1% Duty Cycle is suggested. Load Regulation (mV) = VO (min Load) − VO (max Load) Load Regulation (% VO) = x 100 VO (min Load) VO (max Load) Cin 0.1 mF Adjust R2 1% CO 1.0 mF + * RL (max Load) RL (min Load) Vout R1 240 1% VI Vin IAdj IL * Pulse testing required. * 1% Duty Cycle is suggested. Vin Vout Adjust R1 240 1% + 1.0 mF CO RL Cin R2 1% To Calculate R2: Vout = ISET R2 + 1.250 V To Calculate R2: Assume ISET = 5.25 mA IL IAdj ISET Vref VO VI 0.1 mF Vin Vout Vout = 10 V RL Cin 0.1 mF Adjust R1 240 1% D1* 1N4002 CO + 1.0 mF 24 V 14 V R2 1.65 k 1% CAdj 10 mF + *D1 Discharges CAdj if output is shorted to Ground. f = 120 Hz LM317 LM317 VO (min Load) |
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