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HT4906 Datasheet(PDF) 1 Page - Hotchip Technology Co.,Ltd

Part # HT4906
Description  Li-ion Battery Charger
PDF  11 Pages
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Manufacturer  HOTCHIP [Hotchip Technology Co.,Ltd]
Direct Link  http://www.hotchip.com.cn/English/Index/index.html
Logo HOTCHIP - Hotchip Technology Co.,Ltd

HT4906 Datasheet(HTML) 1 Page - Hotchip Technology Co.,Ltd

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HT4906
Ver1.0
1
移动电源管理方案
概述
HT4906 是一款集成了充电管理模块、电量检测
及 LED 指示模块、升压放电管理模块,完全取代
目前市场上的充电管理 IC+MCU+升压 IC 方案。
应用
 移动电源
 IPAD,MID 备用电源
 MP3,MP4,手机等数码产品的后备电源
特点
 内置电量检测,4 灯指示模式,充电时跑马
灯指示显示模式
 放电时,电量指示灯一直显示当前锂电池电
量,电量指示灯单向递减,直到关机熄灭
 线性充电模式,内置 MOSFET,可外扩三极
管充电。支持对 0V 电池充电,涓流/恒流/恒
压三段式充电。
 内置充电电流具有过温补偿
 充电外扩具有软开关功能
 升压电路使用外部 MOSFET
 手机插入自动启动升压功能
 4KV ESD
 检测短路或者过流保护信号后,关闭输出,
需要按按键重启才能解锁
 高精度过流保护
 升压具有软启动功能
 过流、短路保护
 处于充电状态时,若负载端有手机接入,则
USB_IN 掉电时,自动启动升压系统为手机
充电
 固定开关频率 500KHZ
 芯片待机功耗小于 5uA,整机系统待机功耗
可控制在 20uA 以下
 内置 LED 手电驱动
 电池过充、过放保护
 输出具有空载自动识别关机功能
 电池欠压保护具有锁存功能,必须充电才能
解锁
 升压工作时,BTP<3.2V 后,L1 闪烁报警,
直至升压关闭或 BTP<3V 自动关机


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