BRCL4054BME
Rev.H Dec.-2021
DATA SHEET
描述 / Descriptions
BRCL4054BME是一款完整的单节锂离子电池采用恒定电流/恒定电压线性充电器。其SOT封装与较少
的外部元件数目使得BRCL4054BME成为便携式应用的理想选择。BRCL4054BME可以适合USB电源和
适配器电源工作。由于采用了内部PMOSFET架构,加上防倒充电路,所以不需要外部检测电阻器和隔
离二极管。热反馈可对充电电流进行调节,以便在大功率操作或高环境温度条件下对芯片温度加以限制。
充电电压固定于4.2V,而充电电流可通过一个电阻器进行外部设置,当充电电流在达到最终浮充电压之
后降至设定值1/10时,BRCL4054BME将自动终止充电循环。BRCL4054BME的其他特点包括充电电流
监控器、欠压闭锁、自动再充电和一个用于指示充电结束和输入电压接入的状态引脚。
The BRCL4054BME is a complete constant-current/constant voltage linear charger for single cell
lithium-ion batteries. Its Thin SOT package and low external component count make the
BRCL4054BME ideally suited for portable applications. Furthermore, the BRCL4054BME is
specifically designed to work within USB power specifications.No external sense resistor is needed,
and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback
regulates the charge current to limit the die temperature during high power operation or high ambient
temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed
externally with a single resistor. The BRCL4054BME automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed value after the final float voltage is reached.Other
features include charge current monitor, under voltage lockout, automatic recharge and a status pin to
indicate charge termination and the presence of an input voltage.
特征 / Features
高达800mA的可编程充电电流 / Programmable charge current up to 800mA
无需MOSFET、检测电阻器或隔离二极管 / No MOSFET, sense resistor or blocking diode required
用于单节锂离子电池、采用SOT23-5封装的完整线性充电器 / Complete linear charger in 5-Lead
SOT-23 package for single cell lithium-Ion batteries
恒定电流/恒定电压操作,并具有热调节功能 / Constant-current/Constant-voltage operation with
thermal regulation to maximize charge rate without risk of overheating
直接从USB端口给单节锂离子电池充电 / Charges single cell Li-Ion batteries directly from USB
port
4.2V预设充电电压 / Preset 4.2V charge voltage with ±1% accuracy
用于电池电量检测的充电电流监控器输出 / Charge current monitor output for gas gauging
自动再充电 / Automatic recharge
充电状态输出引脚 / Charge status output pin
C/10充电终止 / C/10 charge termination
2.9V涓流充电 / 2.9V trickle charging
软启动限制了浪涌电流 / Soft-start limits Inrush current
单灯使用时,充满后灯全灭 / When using a single lamp, the light is completely extinguished after
fully charging
无卤产品 / Halogen-free product.
用途 / Applications
蜂窝电话、PDAs、MP3播放器 / Cellular telephones, PDAs, MP3 players
充电座 / Charging docks and cradles
蓝牙应用 / Bluetooth applications.
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