描述

該參考設計是一款高度集成的電路解決方案，旨在保護鋰離子電池免受充電電路故障的影響。該 IC 設計可持續監控輸入電壓和電池電壓。如果發生輸入過壓的情況，則該 IC 將在消隱時間后關閉內部電源 FET。如果在充電過程中電池電壓增加到不安全水平，則將移除系統電源。如果輸入電流在有限時間內超出過流閾值，則該 IC 設計將關閉輸出電源。集成式充電 FET 可根據主機的控制來調節充電電壓和電流。該設計還可提供為主機控制器提供帶過壓和過流保護功能的電壓源。

特性

串聯電池數：1S

最大輸入電壓：26V

最大充電電流：560mA

通信：獨立

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

BQ24350 具有 FET、6.17 輸入 OVP 的過壓和過流充電器前端保護 IC

推薦型號：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