24 V to 16 Volt 2 Amp DC Voltage Drop

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RodneyB

Joined Apr 28, 2012
697
I have a 24 Volt DC supply that I am wanting to charge a 12 Volt battery. I have the PB137 battery Charging IC.

The Input voltage shows on the datasheet that the voltage max is 40 Volts yet on reviews I read that it should not be more than 18 Volts.

I am trying to find out if 18 Volts is in fact the max and if so what would be the best way to convert from 24 to 18 Volts to charge this battery
 

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ScottWang

Joined Aug 23, 2012
7,397
If you considering the Vin only use 18V and the Iout = 500mA as the datasheet described, so you can using a LM317 to drop down the voltage from 24V to 18V.
 
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