MCP73833 USB powered Li-Po charger Circuit
LiPo batteries are increasingly becoming a primary source of power, replacing other chemical sources of energy. The upgraded device, powered by a USB port or a mobile phone charger, allows you to charge medium capacity LiPo cells with critical... Electronics Projects, MCP73833 USB powered Li-Po charger Circuit "battery charger circuit, power electronic projects, " Date 2019/08/04
LiPo batteries are increasingly becoming a primary source of power, replacing other chemical sources of energy. The upgraded device, powered by a USB port or a mobile phone charger, allows you to charge medium capacity LiPo cells with critical operating life and operational safety. Compared to the previous one, it offers higher current charging (up to 1A) and full charge cycle signaling.
The MCP73833 charger IC has a built-in temperature sensor that limits the charging current in case of excessive system temperature. To facilitate the loss of power, it is advisable to use a small heat sink adhesive and use a power supply that provides a stable supply voltage of +5 V. MCP73833
Li-Po charger circuit schematic MCP73833
The MCP73833 charger is powered from the micro USB connector by +5 V. The system controls the temperature of the charged cells with a 10K NTC thermistor, limiting, if necessary, the charging current. LEDs indicate: PWR – presence of power, CHG – charge of the link, OK – completion of charging. The Lipo battery socket is used to attach the charged battery. This is typical of most cells, a 4-pin EH socket. Capacitors C1 and C2 filter the supply voltage.
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