微源半导体

概述

The LP4132 is a cost-effective standalone Boost 2-cell battery charger. The switching frequency is 600kHz to allow a 2.2uH inductor. The fast charge current is programmable by a resistor at iSET pin from 0.35A to 2A. Charge status is indicated by STAT pin driving a
LED in series with a current limit resistor. The LP4132 built in battery temperature monitoring and protection based on NTC temperature sensing The LP4132 offers ESOP-8L package.

应用

◆ 2-cell battery pack
◆ BT speaker
◆ Portable printers
◆ Toys
◆ Power tools

数据参数

最大充电电流(mA)

2000

工作电压(V)

4.5-20

过压保护(V)

6.4

电池电压(V)

8.3/8.4/8.6/8.7

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

2

产品特征/功能

Current sensorless, low BOM cost, VBAT/ICHG programmable, NTC

封装

ESOP8

特征

◆ Easy-to-use standalone 2-cell switching charger
- Proprietary sensorless charge current control
- 4.5V to 6.2V input voltage operation
- 20V absolute maximum input voltage rating
- Charge voltages:8.3V/8.4V/8.6V/8.7V
- 0.35-2A maximum fast charge current
- 600kHz switching frequency
- 90% efficiency at 1A charge current
- 2.2uH 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 batterytemperature 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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