微源半导体

概述

The LP41323 is a cost-effective standalone Boost 3-cell battery charger. The fast charge current is programmable up to 1.2A with input voltage up to 10.5V.Higher input voltage supports higher charge current because of higher charge efficiency. The Boost
converter switches at 600kHz and a 3.3uH or 4.7uH inductor can be selected. The charge status is indicated by STAT pin driving a LED in series with a current limit resistor. The LP41323 features battery temperature monitoring and protection based on NTC
temperature sensing. The LP41323 offers ESOP-8L package.

应用

 3-cell battery charger
 Small home appliance
◆ POS
◆ Power tools
◆ Large portable speakers
◆ Toys
◆ Drones
◆ Robotics

数据参数

最大充电电流(mA)

1500

工作电压(V)

4.5-10.5/20Vmax

过压保护(V)

11

电池电压(V)

12.45/12.6/12.9/13.05

温度检测

Y

使能控制

-

充电状态指示

Y

充满状态指示

-

PG

-

充电类型

Boost Charger

电池节数

3

产品特征/功能

Wide input range, current sensorlss, low BOM cost, VBAT/ICHG programmable, NTC

封装

ESOP8

特征

◆ Easy-to-use standalone 3-cell Boost charger
◆ Proprietary sensorless charge current control
◆ 4.5V to 10.5V input voltage operation
◆ 20V absolute maximum input voltage rating
◆ Charge voltages:12.45V/12.6V/12.9V/13.05V 0.35A -1.2A programmable fast charge current
◆ 600kHz switching frequency
◆ 88% efficiency at 1A charge
◆ 3.3uH/4.7uH inductor
◆ Support Precharge, Constant Current (CC) charge, Constant Voltage(CV)charge, charge termination and recharge
◆ High charge accuracy
◆ +/-0.75% charge voltage regulation
◆ +/-10% charge current regulation
◆ ◆ 150mA precharge current
150mA termination current
◆ Protections
◆ Cycle-by-cycle current limit protection
◆ Input voltage regulation(VINDPM)
◆ Cold/hot battery temperature monitoring
◆ Junction temperature thermal regulation(TREG)
◆ Over junction temperature protection
◆ Packaging
◆ ESOP-8L
◆ RoHS compliant and halogen free
◆ 100% lead (Pb) free

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