具有 FET 的过压和过流充电器前端保护IC(BQ24350) 参考设计

描述

该参考设计是一款高度集成的电路解决方案，旨在保护锂离子电池免受充电电路故障的影响。该 IC 设计可持续监控输入电压和电池电压。如果发生输入过压的情况，则该 IC 将在消隐时间后关闭内部电源 FET。如果在充电过程中电池电压增加到不安全水平，则将移除系统电源。如果输入电流在有限时间内超出过流阈值，则该 IC 设计将关闭输出电源。集成式充电 FET 可根据主机的控制来调节充电电压和电流。该设计还可提供为主机控制器提供带过压和过流保护功能的电压源。

特性

串联电池数：1S

最大输入电压：26V

最大充电电流：560mA

通信：独立

Over-Voltage and Over-Current Charger Front-End Protection IC With FET Reference Design

BQ24350 具有 FET、6.17 输入 OVP 的过压和过流充电器前端保护 IC

推荐型号：BQ24650RVAT

https://www.iczoom.com/product/k01-433552-BQ24650RVAT.html

描述

The bq24350/2 is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage and the battery voltage. In case of an input over-voltage condition, the IC will turn off the internal power FET after a blanking time. If the battery voltage rises to unsafe levels during charging process, power is removed from the system. If the input current exceeds the over current threshold for a limited time, the IC will turn off the output power. The integrated charging FET can regulate the charge voltage and current according to the control from the host. The device can also provide a voltage source with over voltage and over current protection for host controller.

特性

Robust Protection

Input Over-Voltage Protection

Input Over-Current Protection

Accurate Battery Over-Voltage Protection

Thermal Shutdown

Output Short-Circuit Protection

Integrated Charging FET

LDO Mode Operation

Current Limited Power Supply for Host Controller

Soft-Start to Prevent Inrush Currents

Soft-Stop to Prevent Voltage Spikes

30V Maximum Input Voltage

Supports Up to 1A Load Current

Small 2mm × 2mm 8pin SON Package

APPLICATIONS

Mobile Phones

Low-Power Handheld Devices