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高输入电压线性惠州充电芯片BC91801

发布时间:2024-03-27 03:00:00来源:http://hz.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/4.4V4.35V,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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