LP4052
400mA固定电流线性锂电池充电芯片
概述
The LP4077 device is a highly advanced linear charger for single cell Li-Ion and Li-Polymer batteries. The device is ideally suited for portable applications due to a small DFN-6 package and low number of external components required.
The device employs a full charge algorithm with trickle current mode, constant current (CC) mode, constant voltage (CV) mode, charge termination and automatic recharge. The device supports charge current up to 300mA, programmed by an external resistor.Without an input supply, the battery leakage current is only 10nA when ambient temperature is 25°C， so it can save energy and improve standby time.The device provides input under voltage lockout (UVLO) and thermal regulation foldback protection that is implemented by reducing the charge current while the junction temperature reaches 125°C.The LP4077 is available in a DFN-6 (1mmx1mm)package.
The device employs a full charge algorithm with trickle current mode, constant current (CC) mode, constant voltage (CV) mode, charge termination and automatic recharge. The device supports charge current up to 300mA, programmed by an external resistor.Without an input supply, the battery leakage current is only 10nA when ambient temperature is 25°C， so it can save energy and improve standby time.The device provides input under voltage lockout (UVLO) and thermal regulation foldback protection that is implemented by reducing the charge current while the junction temperature reaches 125°C.The LP4077 is available in a DFN-6 (1mmx1mm)package.
应用
◆ Smart Watches
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Fitness Accessories
◆ Bluetooth Handsets
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Fitness Accessories
◆ Bluetooth Handsets
数据参数
数据参数
最大充电电流(mA)
300
工作电压(V)
3.9~8
过压保护
-
电池电压(V)
4.2
温度检测
-
使能控制
Y
充满指示
-
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,Low size,OTP,low Ultra-Input Quiescent Current
封装
TDFN-6(1*1)
特征
特征
◆ Easy-to-use standalone single-cell charger
- 1% regulated voltage accuracy
- Programmable up to 300mA constant current
- Trickle charge 30% of constant current
- Termination current 10% of constant current
◆ High integration
- Integrated reverse blocking MOSFET
- Built-in charge current sensing
- Internal loop compensation
- Integrated charge status indication
◆ Support full charge cycle of trickle current mode,constant current (CC) mode, constant voltage (CV)mode, charge termination and automatic recharge
◆ 10nA BAT leakage current
◆ Thermal regulation foldback
◆ Low active EN function
◆ RoHS compliant and 100% lead (Pb)-free
◆ Package: DFN-6(1mm x 1mm)
- 1% regulated voltage accuracy
- Programmable up to 300mA constant current
- Trickle charge 30% of constant current
- Termination current 10% of constant current
◆ High integration
- Integrated reverse blocking MOSFET
- Built-in charge current sensing
- Internal loop compensation
- Integrated charge status indication
◆ Support full charge cycle of trickle current mode,constant current (CC) mode, constant voltage (CV)mode, charge termination and automatic recharge
◆ 10nA BAT leakage current
◆ Thermal regulation foldback
◆ Low active EN function
◆ RoHS compliant and 100% lead (Pb)-free
◆ Package: DFN-6(1mm x 1mm)
