General description /产品概述
The BM301 is a professional protection IC for 3 cells rechargeable battery pack; it is highly integrated, high accuracy and generally used in power tools, electric bicycle and UPS applications. The BM301 works constantly to monitor each cell’s voltage, the current of charge or discharge, wire breaking or not and temperature of the environment to provide overcharge, over-discharge, discharge overcurrent, short circuit, charge overcurrent, breaking wire and temperature protections, etc. Besides, it also can change the protection delay time of over-discharge and discharge overcurrent by setting the internal fuse.
BM301 系列 IC 是一款***、高集成度的*** 3 节可充电电池保护芯片,适用于电动工具、吸尘器以 及小型后备电源等。芯片通过检测各节电池的电压、充放电电流、环境温度以及采样线通断等信息实现电池 过充、过放、放电过电流、短路、充电过电流、高温以及断线等保护功能,通过内部修调选择来调节过充、 过放、放电过流保护延时。
Features /产品特点
⑴ High-accuracy voltage detection for each cell
各节电池的***电压检测功能
·Overcharge threshold 3.6 V ~ 4.6 V accuracy: ±25 mV (+25℃)
过充电检测电压 精度±25 mV(+25℃)
accuracy: ±40 mV (-40℃ to +85℃)
精度±40 mV(-40℃至+85℃)
·Overcharge hysteresis 0.12 / 0.25 V accuracy: ±50 mV
过充电迟滞电压 精度 ±50 mV
·Over-discharge threshold 1.6 V ~ 3.0 V accuracy: ±80 mV
过放电检测电压 精度±80 mV
·Over-discharge hysteresis 0 / 0.2 / 0.4 V accuracy: ±100 mV
过放电迟滞电压 精度±100 mV
⑵ Three grades voltage detection of discharge overcurrent
3 段放电过电流检测功能
·Discharge overcurrent 1 0.030 / 0.050 / 0.100 / 0.150 V accuracy: ±15 mV
过电流检测电压 1 精度±15 mV
·Discharge overcurrent 2 0.075 / 0.250 / 0.300 / 0.400 V
过电流检测电压 2
·Short circuit 0.400 / 0.500 / 0.600 / 0.800 V
短路检测电压
⑶ Charge overcurrent detection
充电过电流检测功能
·Detection voltage -0.030 / -0.050 / -0.1 V
充电过电流检测电压
⑷ Setting of output delay time
延时内置可选
Over-discharge, discharge overcurrent 1 and discharge overcurrent 2 protection delay time can be setting the inside fuse.
·通过修调选择设置内置过充电、过放电、放电过流 1、放电过流 2 等保护延迟时间
⑸ Overcharge temperature protection
充放电高温保护功能
⑹ Charger detection, load detection
充电器负载检测功能
⑺ Wide operation temperature range:-40℃~85℃
宽工作温度范围:-40℃~85℃
⑻ Breaking wire protection
断线保护功能
⑼ Low power consumption:
低功耗: ·Operation mode 12 uA (+25℃)
工作时 ·Sleeping mode 5 uA (+25℃)
休眠时 Package
/封装形式
·MSOP10 /SSOP10 Applications /
应用领域
·Power tool /电动工具
·Notebook /笔记本电脑
·UPS backup battery /后备电源