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RC0431A Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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RC0431A Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page www.fairchildsemi.com REV. 1.0.7 8/5/03 Features •Low voltage operation to 1.24V • 1% reference voltage tolerance • Output voltage adjustable from Vref to 12V •Low 80µA operational cathode current • 0.25 Ω typical output impedance •TO-92, SOT23-3 and SOT23-5 packages Applications •Voltage reference for discrete power circuits Description The RC0431A is a low-voltage 3-terminal adjustable precision voltage reference regulator. It has an excellent thermal stability over the standard commercial temperature range. The output voltage can be set to any value between Vref (1.24V) and 12V using two external resistors. The RC0431A operates from a lower voltage (1.24V) than the traditional shunt regulator references which operate from 2.5V. When used with an optocoupler, the RC0431A will be an ideal voltage reference in an isolated feedback circuit for use in switched-mode power supplies and modular DC-DC converters. The RC0431A has a low output impedance of active output circuitry offering a very sharp turn-on characteristic. The RC0431A will be an excellent replacement for low-voltage zener diodes in many applications such as on-board regulation and adjustable power supplies. Symbol Block Diagram RC0431A (RC431A) Low-Voltage Adjustable Precision Shunt Regulator REF 65-431A-01 Anode Cathode Vref = 1.24V REF + _ CATHODE ANODE 65-431A-02 |
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