LP4052
400mA固定电流线性锂电池充电芯片
概述
The LP28009A device is a highly advanced linearcharger for dual-cell Li-Ion and Li-Polymer battery. The device is ideally suited for portable applications since the small ESOP-8 package and low number of external components required.
The device employs a full charge algorithm with trickle current/constant current/constant voltage mode. The device supports charge current up to 1A programmed by a current sense resistor. The device can withstand an input voltage up to 30V which can protect from the accidental insertion of high voltage. The device can withstand a BAT voltage up to 24V which is suited for power battery application. Without input supply, the battery leakage current is about 2µA (typical) with 8.4V battery voltage.
The device provides various safety features for battery charging, including input under voltage lockout, input over-voltage protection, battery temperature protection which is implemented by an internal constant current source and an external NTC thermistor, thermal regulation foldback protection which is implemented by reducing the charge current while the junction temperature attempts to rise up to 160℃.
The LP28009A is available in an ESOP-8 package.
The device employs a full charge algorithm with trickle current/constant current/constant voltage mode. The device supports charge current up to 1A programmed by a current sense resistor. The device can withstand an input voltage up to 30V which can protect from the accidental insertion of high voltage. The device can withstand a BAT voltage up to 24V which is suited for power battery application. Without input supply, the battery leakage current is about 2µA (typical) with 8.4V battery voltage.
The device provides various safety features for battery charging, including input under voltage lockout, input over-voltage protection, battery temperature protection which is implemented by an internal constant current source and an external NTC thermistor, thermal regulation foldback protection which is implemented by reducing the charge current while the junction temperature attempts to rise up to 160℃.
The LP28009A is available in an ESOP-8 package.
应用
◆ Wireless Speaker
◆ Cordless Power Tools
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Toys
◆ Cordless Power Tools
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Toys
数据参数
数据参数
最大充电电流(mA)
1000
工作电压(V)
9.0~30
过压保护
14
电池电压(V)
8.4
温度检测
Y
使能控制
-
充满指示
-
充电状态指示
Y
电源状态指示
-
电池节数
2
产品特征/功能
CTC,OTP,Full voltage±1%Accuracy
封装
ESOP8
特征
特征
◆ Easy-to-use standalone dual-cell charger
◆ High input voltage linear charger
- Support up to 14V input voltage with 30V absolute maximum input rating
- Maximum BAT withstand voltage up to 24V
- Support up to 1A fast charge current
- Trickle charge 15% of fast charge current
◆ High integration
- Integrated reverse blocking MOSFET
- Internal loop compensation
- Built-in charge status indication driver
◆ Support full charge cycle-- trickle charge, constant current charge and constant voltage charge
◆ Battery leakage current 2μA(typical)
◆ Protections
- Input under-voltage lockout (UVLO)
- Input over-voltage protection (OVP)
- Thermal regulation foldback
- Battery temperature protection
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ Package: ESOP-8
◆ High input voltage linear charger
- Support up to 14V input voltage with 30V absolute maximum input rating
- Maximum BAT withstand voltage up to 24V
- Support up to 1A fast charge current
- Trickle charge 15% of fast charge current
◆ High integration
- Integrated reverse blocking MOSFET
- Internal loop compensation
- Built-in charge status indication driver
◆ Support full charge cycle-- trickle charge, constant current charge and constant voltage charge
◆ Battery leakage current 2μA(typical)
◆ Protections
- Input under-voltage lockout (UVLO)
- Input over-voltage protection (OVP)
- Thermal regulation foldback
- Battery temperature protection
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ Package: ESOP-8
