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单节充电管理

TX4054B

   TX4054B  (停产)  (stop production)
   TX4054B锂电池的充电管理,充电检测电压:4.2V
    TX4054B最大充电电流800mA
    适用于移动电话、数码相机、电子词典、移动电源。

    TX4054B  (停产)  (stop production)
    TX405B概述

        TX4054B is a complete CC/CV linear charger for single cell lithium-ion batteries. it 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 P-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 TX4054B automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached.  
        When the input supply (wall adapter or USB supply) is removed the TX4054B automatically enters a low current state dropping the battery drain current to less than 2μA.
        The TX4054B can be put into shut down mode reducing the supply current to 55μA.
        Other features include Battery temperature monitor, under-voltage lockout, automatic recharge and two status pins to indicate charge and charge termination.


    TX4054B特性
    Protection of battery cell reverse connection
    Programmable charge current up to 800mA
    No MOSFET sense resistor or blocking diode required
    Complete linear Charger for single Cell Lithium-Ion Batteries
    CC and CV operation with thermal regulation to maximize Rate without risk of overheating
    Preset 4.2V charge voltage with ±1% accuracy
    Automatic Recharge
    C/10 charge termination
    2.9V trickle current charge threshold
    Soft-Start limits inrush current
    Available in SOT23-5 package


    TX4054B应用
    Cellular Telephones
    Mobile Power Supply
    Digital Still Cameras
    MP3 Players
    Bluetooth Applications
    Portable Devices
    USB Bus-Powered Chargers


    TX4054B引脚配置及描述



    TX4054B典型应用

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