LP4052
400mA固定电流线性锂电池充电芯片
概述
The LP4068H 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 the small SOT23-5 package and low number of external components required.
The device employs a full charge algorithm with trickle current, constant current (CC), constant voltage (CV) modes, charge termination and automatic recharge. The device supports charge current up to 800mA, programmed by an external resistor. The device can withstand an input voltage up to 36V, which can protect the charger from the accidental insertion of high voltage and hot plug-in. The device can withstand a BAT voltage up to 14V, which is suited for power battery applications.
Without an input supply, the battery reverse current is only 30nA typical.
The device provides various safety features for battery charging, including input under voltage lockout (UVLO), input over-voltage protection (OVP), battery reverse connection protection, and thermal regulation foldback protection that is implemented by reducing the charge current while the junction temperature reaches 140℃.The LP4068H is available in a SOT23-5 package.
The device employs a full charge algorithm with trickle current, constant current (CC), constant voltage (CV) modes, charge termination and automatic recharge. The device supports charge current up to 800mA, programmed by an external resistor. The device can withstand an input voltage up to 36V, which can protect the charger from the accidental insertion of high voltage and hot plug-in. The device can withstand a BAT voltage up to 14V, which is suited for power battery applications.
Without an input supply, the battery reverse current is only 30nA typical.
The device provides various safety features for battery charging, including input under voltage lockout (UVLO), input over-voltage protection (OVP), battery reverse connection protection, and thermal regulation foldback protection that is implemented by reducing the charge current while the junction temperature reaches 140℃.The LP4068H is available in a SOT23-5 package.
应用
◆ Wireless Speaker
◆ Cordless Power Tools
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Power Bank
◆ E-Cigarettes
◆ Cordless Power Tools
◆ Gaming Devices
◆ Portable Media Players
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Power Bank
◆ E-Cigarettes
数据参数
数据参数
最大充电电流(mA)
800
工作电压(V)
4.5~36
过压保护
7
电池电压(V)
4.2
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
1
产品特征/功能
CTC,High Vin voltage,High BAT voltage,Low size,OTP
封装
SOT23-5/DFN-8(2*3)
特征
特征
◆ Easy-to-use standalone single-cell charger
◆ High input voltage linear charger
- Support up to 7V input voltage with 36V absolute maximum input rating
- Maximum BAT withstand voltage up to 14V
- Programmable up to 800mA fast charge current
- Trickle current 10% of fast charge current
- Termination current 10% of fast charge 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
◆ BAT leakage current 30nA typical
◆ Protection features
- Input under-voltage lockout (UVLO)
- Over-voltage protection (OVP)
- Battery reverse connection protection
- Thermal regulation foldback
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ Package: SOT23-5
◆ High input voltage linear charger
- Support up to 7V input voltage with 36V absolute maximum input rating
- Maximum BAT withstand voltage up to 14V
- Programmable up to 800mA fast charge current
- Trickle current 10% of fast charge current
- Termination current 10% of fast charge 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
◆ BAT leakage current 30nA typical
◆ Protection features
- Input under-voltage lockout (UVLO)
- Over-voltage protection (OVP)
- Battery reverse connection protection
- Thermal regulation foldback
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ Package: SOT23-5
