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CT6551 Datasheet Preview

CT6551 Datasheet

Integrated Linear Moving Large Current Charging & High Current Synchronous Rectification BOOST Power Management Chips

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CT6551 产品说明书
CT6551 产品说明书
产品概述
CT6551 是一款集成线性大电流充电及大电流 BOOST 同步整流升压的移动
电源管理芯片,针对大容量单芯或多芯并联锂电池(锂离子或锂聚合物)的移动
电源应用,提供简单易用的解决方案。
CT6551 内部集成了一路大电流(最大电流 1A)线性充电器,一路用于 2.0A
电流输出的同步整流 Boost 升压电路,内置 POWER MOS 开关管,无需 Schottky
Diode。同时内部集成了电量检测,一键开关机,输出电流检测及限制,无负载
自动关机等功能;此外,为保证锂电池的使用安全,系统还集成了多种保护功能,
如输出限流保护,IC 过温保护,输出短路保护等。
CT6551 提供封装形式:eTSSOP-20L
产品特点
™ 线性充电功能
¾ 线性充电,最大充电电流可达
1A,最大充电电流通过外置电
阻选择
¾ 过温保护模式下,充电电流随
芯片温度自动变化
¾ 充电电压高精度,误差小于
1%
¾ 支持 4.20V 电池
¾ 输入电压:3.0-5.5V
™ 同步整流升压转换功能
¾ 同步整流 Boost 升压电路,内
Power MOS 开关管,无需
Schottky Diode
¾ 输出空载电压:5.10V
¾ 输出电压精度:±3%
¾ 最大输出电流:2.0A
¾ 转换效率:MAX:94%
¾ 输出负载检测及限流、短路保
™ 系统管理
¾ 按键开关机控制,短按(小于
2.1 )开关机
¾ 接上适配器自动开机(满足条
件详见后续描述)
¾ 输出电流监测,输出无负载检
测,16.8 秒自动关机
¾ 照明 LED 开关控制,长按 2.1
秒以上开关 LED 照明电源
¾ 充电状态指示
¾ 电池电量显示
¾ 电池电压 2.8V 以下自动关闭
Boost 输出
1




CREATIC

CT6551 Datasheet Preview

CT6551 Datasheet

Integrated Linear Moving Large Current Charging & High Current Synchronous Rectification BOOST Power Management Chips

No Preview Available !

CT6551 产品说明书
目 录 Table of Contents
1 脚位及说明...............................................................................................................................1
2 应用电路图...............................................................................................................................2
3 主要功能介绍...........................................................................................................................2
3.1 Charger ........................................................................................................................2
3.2 Boost Converter..........................................................................................................4
3.3 开关机管理及电量显示模块.......................................................................................4
4 电性参数...................................................................................................................................8
4.1 极限参数.......................................................................................................................8
4.2 正常工作电性参数.......................................................................................................9
4.2.1 整机电性参数...................................................................................................9
4.2.2 Charger电性参数 ..........................................................................................10
4.2.3 Boost Converter电性参数 ............................................................................11
5 特性曲线和波形.....................................................................................................................12
6 应用说明.................................................................................................................................13
6.1 Charger ......................................................................................................................13
6.2 Boost Converter........................................................................................................15
6.3 PCB布线规则 ............................................................................................................18
7 封装尺寸.................................................................................................................................19
2



Part Number CT6551
Description Integrated Linear Moving Large Current Charging & High Current Synchronous Rectification BOOST Power Management Chips
Maker CREATIC
Total Page 22 Pages
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