高输入电压线性宁波充电芯片BC91801

发布时间：2024-03-27 03:00:00来源：http://nb.szxunrui.cn/news1011041.html

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高输入电压线性充电芯片BC91801

GENERAL DESCRIPTION

The BC91801 isa complete constant-current/constant-voltage linear charger for single cell lithium battery. Its compact package with minimum external components requirement makes the BC91801 ideal for portable application. No external sense resistor or blocking diode is necessary for it. Build-in thermal feedback mechanism regulates the charge current to control the die temperature during high power operation or at elevated ambient temperature. The BC91801 has a pre-charge function for trickle charging deeply discharged batteries. The fast charge current can be programmed by an external resistor. CV regulation mode is automatically enable once the batter’s charge curve reaches the constant voltage portion. The output current then decays an is finally terminated once the charge current drops to 1/10 th of the programmed value. The BC91801 keeps monitoring the battery voltage and enable a new charge cycle once the voltage drops by 250mV Below the CV value.

FEATURE

Input voltage range 4.5V~6.5V, Maximum Voltage

for the Power Input 25V

Charging battery voltage4.2V/4.35V/4.4V（4.35V,4.4V Charging voltage can be customized）

Accuracy of charging voltage±1%

Trickle/constant current/constant voltage charging

Maximum constant current charging current 1A;External resistance adjustable

Constant current charging accuracy ±10%

VIN OVP 6.5V;

When the chip is overheated, the temperature loop automatically reduces the charging current

Battery anti-irrigation protection：Static power consumption 0uA

Support single color light/dual color light display mode