NJW4120 controller equivalent, lithium-battery charger controller.
it has over voltage, over discharge, temperature detection, and a charge over timer. Also, the adaptor and the charge control circuit are mounted on one chip.
*FEATUR.
*PACKAGE OUTLINE NJW4120 is a 1-cell and 2-cell lithium ion battery charge control IC with a built-in AC-DC secondary side control feature. Using a photocoupler to directly feed back optimum charging voltage and current information to the primary.
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