LP4052
400mA固定电流线性锂电池充电芯片
概述
The LP4078 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-10 package and low number of external components required.
The LP4078 device employ a completed charge algorithm with trickle current/constant current/constant voltage mode and charge termination. The device supports charge current up to 1A which can be program 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 20V which is suited for power battery application. Without input supply, the battery reverse current is less than 0.1µA.
The LP4078 device support JEITA temperature standardby an NTC monitoring battery temperature circuit. 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 feedback regulation loop.
The LP4078 is available in a DFN-10 (3x3mm) package.
The LP4078 device employ a completed charge algorithm with trickle current/constant current/constant voltage mode and charge termination. The device supports charge current up to 1A which can be program 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 20V which is suited for power battery application. Without input supply, the battery reverse current is less than 0.1µA.
The LP4078 device support JEITA temperature standardby an NTC monitoring battery temperature circuit. 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 feedback regulation loop.
The LP4078 is available in a DFN-10 (3x3mm) package.
应用
◆ Portable Media Players
◆ Cellular and Smart Mobile Phone
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
◆ Cellular and Smart Mobile Phone
◆ Handheld Battery-Powered Devices
◆ Charging Docks and Cradles
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
22
电池电压(V)
4.2/4.35/4.4
温度检测
Y
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,High Vin voltage,High BAT voltage,Low size,OTP
封装
DFN-10(3*3）
特征
特征
◆ 1% Charge Voltage Accuracy
◆ 1A Maximum Charge Current
◆ ◆ JEITA Temperature Standard Followed
◆ No External MOSFETs, Sense Resistor and Reverse-Blocking Diode Required
◆ Trickle Current/Constant Current/Constant Voltage Mode Supported
◆ Charge Termination and Automatic Recharge
◆ Maximum Input Voltage up to 40V with 22V Input-Over-Voltage Protection
◆ Maximum BAT Withstand Voltage up to 15V
◆ Thermal Feedback Regulation
◆ Battery Reverse Connection Protection
◆ ESD Protection
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ Package: 3x3mm DFN-10
◆ 1A Maximum Charge Current
◆ ◆ JEITA Temperature Standard Followed
◆ No External MOSFETs, Sense Resistor and Reverse-Blocking Diode Required
◆ Trickle Current/Constant Current/Constant Voltage Mode Supported
◆ Charge Termination and Automatic Recharge
◆ Maximum Input Voltage up to 40V with 22V Input-Over-Voltage Protection
◆ Maximum BAT Withstand Voltage up to 15V
◆ Thermal Feedback Regulation
◆ Battery Reverse Connection Protection
◆ ESD Protection
◆ RoHS Compliant and 100% Lead (Pb)-Free
◆ Package: 3x3mm DFN-10
