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概述
The LP28053A is a complete constant-current/constant voltage linear charger for single cell lithium-ion battery. Its ESOP8 package and low external component count make the LP28053A ideally suited for portable applications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V/4.4V, and the charge current can be ISET programmed externally with a single resistor.
The LP28053A automatically terminates the charge cycle when the charge current drops to 1/10 setting current value after the final float voltage is reached. When the input supply is removed, the LP28053Aautomatically enters a low current state, dropping the battery drain current to less than < 1µA. Other features include charge current monitor, under voltage lockout, automatic recharge and a status pin.
应用
◆ Portable Media Players/Game
◆ Power Bank
◆ Bluetooth Applications
◆ PDA/MID
数据参数
数据参数
最大充电电流(mA)
300~1000
工作电压(V)
4.5~28
过压保护
7
电池电压(V)
4.2
温度检测
Y
使能控制
Y
充满指示
Y
充电状态指示
Y
电源状态指示
-
电池节数
1
产品特征/功能
CTC,1A Large Current,OTP,Reverse Protection
封装
ESOP8
特征
特征
◆ Input Voltage up to 28V
◆ Input Over Voltage Protection:7V
◆ Short-circuit protection
◆ Programmable Charge Current Up to 1000mA
◆ < 1µA Battery Reverse Current
◆ Protection of Reverse Connection of Battery
◆ No MOSFET, Sense Resistor or Blocking Diode Required
◆ Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating
◆ ESOP-8 Package
◆ RoHS Compliant and 100% Lead (Pb)-Free
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