LP4052
400mA固定电流线性锂电池充电芯片
概述
The LP28014SE device is a highly advanced linear charger for single cell Li-Ion and Li-Polymer battery. The device is ideally suited for portable applications since the DFN-8 package and low number of external components required.The device employs a full charge algorithm with trickle current/constant current/constant voltage mode, charge termination and recharge. The device supports charge current up to 1A programmed by one external resistor. The device can withstand an input voltage up to 40V which can protect from the accidental insertion of high voltage adaptor. The device can withstand a BAT voltage up to 15V which is suited for power battery application. Without input supply, the battery reverse current is less than 0.1µA.The device provides various safety features for battery charging, including input-over-voltage protection, battery reverse connection protection and device junction temperature-limit protection by limiting the charge current, which is implemented by an internal thermal fold back regulation loop.
The LP28014SE is available in a DFN-8 (2mmx2mm) package.
The LP28014SE is available in a DFN-8 (2mmx2mm) package.
应用
◆ Wireless Speaker
◆ Cordless Power Tools
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Toys
◆ E-Cigarettes
◆ Cordless Power Tools
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Toys
◆ E-Cigarettes
数据参数
数据参数
最大充电电流(mA)
1000
工作电压(V)
4.5~40
过压保护
6.5
电池电压(V)
4.2/4.35/4.4
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
Y
电池节数
1
产品特征/功能
CTC,High Vin voltage,High BAT voltage,Low size,OTP
封装
DFN-8 (2*2）
特征
特征
◆ Easy-to-use standalone single cell charger
◆ High input voltage linear charger
- Support up to 6.5V input voltage with 40V absolute maximum input rating
- Maximum BAT withstand voltage up to 15V
- Programmable up to 1A fast charge current
- Trickle charge 10% of fast charge current
- Programmable termination current
◆ High integration
- Integrated reverse blocking MOSFET
- Integrated charge current sensing
- Internal loop compensation
- Charge operation indication driver
◆ Support full charge cycle of trickle charge, constant current charge and constant voltage charge, charge termination and recharge.
◆ ◆ Protections
- Input under-voltage lockout (UVLO)
- Over-voltage protection (OVP)
- Battery reverse connection protection
- Thermal regulation fold back
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ High input voltage linear charger
- Support up to 6.5V input voltage with 40V absolute maximum input rating
- Maximum BAT withstand voltage up to 15V
- Programmable up to 1A fast charge current
- Trickle charge 10% of fast charge current
- Programmable termination current
◆ High integration
- Integrated reverse blocking MOSFET
- Integrated charge current sensing
- Internal loop compensation
- Charge operation indication driver
◆ Support full charge cycle of trickle charge, constant current charge and constant voltage charge, charge termination and recharge.
◆ ◆ Protections
- Input under-voltage lockout (UVLO)
- Over-voltage protection (OVP)
- Battery reverse connection protection
- Thermal regulation fold back
◆ RoHS Compliant and 100% Lead (Pb)-Free
