TI bq25120可穿戴和IoT电池充电器解决方案
TI公司的bq25120是高度集成电池充电管理集成电路,包括用于可穿戴设备的线性充电器,稳压输出,负载开关,带定时器的人工重置以及电池电压监视器,工作电压高达4.65 V,主要用在智能手表和其它可穿戴设备,健身设备附件,健康监测附件以及可充电玩具.本文介绍了bq25120主要特性,框图和应用电路,以及评估板bq25120EVM-731主要特性,电路图,材料清单和PCB设计文件图.
The bq25120 is a highly integrated battery charge management IC that integrates the most common functions for wearable devices: Linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The integrated buck converter is a high efficiency, low IQ switcher using DCS control that extends light load efficiency down to 10-µA load currents.The low quiescent current during operation and shutdown enables maximum battery life. The device supports charge currents from 5 mA to 300 mA. The input current limit, charge current, buck converter output voltage, LDO output voltage, and other parameters are programmable through the I2C interface.
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