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Frequency and Timing Circuits

Power supply circuits.

Variable Low current DC voltage from high input voltage up to 100 V.

This below circuit based in Intersil's ISL6719 can produce 1.5V to 20V DC at a current of 100 milli Amps from a unregulated DC source of 17 V to 100 V DC. The linear regulator used in this circuit is ISL6719 from Intersil Corp.

It uses very few external components and does not require any inductor.

electronic components

C1 = 0.1 micro farads ceramic capacitor
C2 = 1 micro farad electrolytic or tantalum capacitor
C3 = 220 pico farad ceramic capacitor
R1 and R2 = Depends on the required output voltage (see the formula in the above picture)

For datasheet and further details visit

http://www.intersil.com/cda/deviceinfo/0,1477,ISL6719,0.html

 


 

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