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PW4203 step-down lithium battery charging IC verification board

 
Overview
This 3S/3-series lithium battery step-down charging module is suitable for replacing various 12.6V lithium battery chargers for electric drills, flashlights, and RC remote control cars. The input
voltage is 15V. For testing 2A charging of
3 series lithium batteries at 15V, and testing charging a
12V electric drill battery at 2A
, the sampling resistor is 12mR. Without heat dissipation, 2A charging will cause the chip to overheat and enter protection mode.
Replacing the sampling resistor with a 20mR allows for stable long-term operation at 1A. Please select the appropriate charging current according to your application requirements.
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Update:2026-03-26 20:47:24

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