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产品名称: BM3452 比亚迪三节锂电保护

产品型号: BM3452

封装: SOP 16

功率: -

输入电压: -

输出电压: 12V

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输出电流:

库存信息:12000件

价格: 1.5

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General Description
      The BM3452 is a professional protection IC for 3 cells rechargeable battery pack; it is highly integrated,
and generally used in power tools, electric bicycles and UPS applications.
      The BM3452 works constantly to monitor each cell’s voltage, the current of charge or discharge, and
the temperature of the environment to provide overcharge, over-discharge, discharge overcurrent, short
circuit, charge overcurrent and over-temperature protections, etc. Besides, it also can change the
protection delay time of overcharge, over-discharge and discharge overcurrent by setting the external
capacitors.
Features
(1) High-accuracy voltage detection for each cell
·overcharge threshold 3.6V~4.6V accuracy: ±25 mV (+25℃)
accuracy: ±40 mV (-40℃ to +85℃)
·overcharge hysteresis 0.1V accuracy: ±50 mV
·over-discharge threshold 1.6V~3.0V accuracy: ±80 mV
·over-discharge hysteresis 0V / 0.2V / 0.4V accuracy: ±100 mV
(2) Three grades voltage detection of discharge overcurrent
·discharge overcurrent 1 0.025 V ~ 0.30 V (50 mV step)
·discharge overcurrent 2 0.2 V / 0.3V / 0.4V / 0.6 V
·short circuit 0.8V / 1.2 V
(3) Charge overcurrent detection
·detection voltage -0.03V / -0.05V / -0.1V / -0.15V / -0.2 V
(4) Setting of output delay time
·overcharge, over-discharge, discharge overcurrent 1 and discharge overcurrent 2 protection delay
time can be set by external capacitors
(5) Controlling the state of charge or discharge by external signals
(6) The maximum output voltage of CO / DO: 12V
(7) Over-temperature protection
(8) Wide operation Temp Range: -40℃~85℃
(9) Breaking Wire Protection
(10) Low power consumption
·operation mode(with Temp protection) 25 μA typical
·operation mode(without Temp protection) 15 μA typical
·sleeping mode 6 μA typica
 
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