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25V上海高耐压线性充电芯片BC91801 兼容SGM40561和SY8602

发布时间:2024-01-30 03:00:00来源:http://sh.szxunrui.cn/news1001568.html

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25V高耐压线性充电芯片BC91801 兼容SGM40561和SY8602

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/4.4V4.35V,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 protectionStatic power consumption 0uA
Support single color light/dual color light display mode
Package: DFN2*2
ESD 4KV
APPLICATION
IOT Gadgets; Wearable Devices; Credential Keys
Wireless Remote; Electric toothbrush; Electric shaver;Electronic cigarette
Other applications

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