BM3451 - 3/4/5 Cell Battery Protectors

BYD Microelectronics

Datasheet Details

Part number	BM3451
Manufacturer	BYD Microelectronics
File Size	803.01 KB
Description	3/4/5 Cell Battery Protectors
Datasheet	BM3451 Datasheet

General Description

The BM3451 is a professional protection IC for 3/4/5 cells rechargeable battery pack;

it is highly integrated, and generally used in power tools, electric bicycles and UPS applications.

The BM3451 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.

Overview

BYD Microelectronics Co., Ltd.

BM3451 Series 3/4/5 Cell Battery Protectors.

Key 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.

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