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V7802-1000-SMT Datasheet(PDF) 5 Page - CUI INC |
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V7802-1000-SMT Datasheet(HTML) 5 Page - CUI INC |
5 / 6 page cui.com date 11/23/2011 │ page 5 of 6 CUI Inc │ SERIES: V78-1000-SMT │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR EMC RECOMMENDED CIRCUIT V7805-1000-SMT 1 7,9 5 +Vin GN D C1 6 10 ON /O FF 47 0p F C2 TVS L1 RL +Vo GND 1 7,9 5 +Vo GND C3 6 10 ON/O FF 470 pF C4 RL L2 GND +Vin V7805-1000-SMT TVS: SMCJ18A, 1500W L1: 68 μH C1: 680 μF / 50 V electrolytic capacitors L2: 516 μH C3: 1 μF / 50 V ceramic capacitor ADJUSTMENT RESISTOR VALUES MODEL V7802 V7803 V7805 Vo (nominal) 2.5 V 3.3 V 5.0 V Vadj (V) R1 (kΩ) R2 (kΩ) R1 (kΩ) R2 (kΩ) R1 (kΩ) R2 (kΩ) 1.5 51.1 - - - - - 1.8 104.3 - 15.4 - - - 2.5 - - 87 - 9.7 - 3.0 - 88.7 339 - 30.5 - 3.3 - 41.3 - - 48.8 - 3.6 - 20.1 - 121 75 - 3.9 - 8.0 - 51.0 115 - 4.5 - - - 16.6 338 - 4.9 - - - 8.0 1,835 - 5.0 - - - 6.5 - - 5.1 - - - 5.2 - 426 5.5 - - - 1.1 - 58.7 6.0 ---- - 16.9 6.5 ---- - 3.2 The R1, R2 in the above table are used to set the output voltage. If no need to adjust the output voltage, connect a ceramic capacitor to GND with 470pF typical value for increase immunity. Insure the output voltage is in the adjust range or else may cause permanent damage to the device. Fine-tune output voltage must appease Vin-Vo>2V. |
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