91HiJe

A small lithium battery integrated board

Overview

The purpose of this article is primarily to summarize personal experience and hopefully provide developers with a circuit design approach for lithium battery charging and power display. The circuit will be described from the following aspects. The initial design of this circuit was to use a coin-sized lithium battery as the power source (3.5V-4.2V), stepping down to supply 3.3V and boosting to supply 5V. It includes a lithium battery charging circuit that can charge via a Type-C interface and display the battery level and whether it is fully charged. This circuit was designed to provide a new approach.
CSDN detailed introduction link: http://t.csdnimg.cn/XECuS

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-27 03:19:41

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