微源半导体

概述

The LP4131 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 lSET pin from 0.35A to 1A. Charge status is indicated by STAT pin driving a
LED. The LP4131 is recommended to be supplied from a voltage source with output current limit function.
The LP4131 offers SOT23-6L package.

应用

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

数据参数

最大充电电流(mA)

1000

工作电压(V)

4.5-6.2

过压保护(V)

6.4

电池电压(V)

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

Cost-effective, current sensorlss, low BOM cost, battery charge current programmable

封装

SOT23-6

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 8.4V/8.6V/8.7V
- 0.35 -1A programmable fast charge current
- 600kHz switching frequency
- 90% charge efficiency at 1A charge
- Support Precharge, Constant Current (CC)
- charge, Constant Voltage (CV)charge, charge
- termination and recharge
◆ 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)
- Junction temperature thermal regulation(TREG)
- Over junction temperature protection
◆ Packaging
- SOT23-6L
- -RoHS compliant and halogen free
- -100% lead (Pb) free

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