W723 High-Voltage Current-Limiting Protection Circuit

Published:2011/5/7 6:03:00 Author:Robert | Keyword: High-Voltage, Current-Limiting, Protection | From:SeekIC

The application circuit shown in the picture below with output voltage higher thanreferenced voltage is composed of the W723 multi-port adjustable positive stabilizer. There is current limiting protectionin this circuit and the output voltage is adjustable from 7V to 36V. The input voltage in the picture is 20V, and its output voltage is 15V. The circuit in the picture also changes the output voltage by changing the sample resistance's voltage partial pressure ratio. The R2's caculation method is shown below. In its formula Vref is the referenced voltage of the stabilizer which is about 7.2V; the current-limiting resistance R3's caculation is shown below which can be taken 17Ω.



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