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Linear charge management

CST4056B

    CST4056B 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 CST4056B 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 CST4056B automatically enters a low current state dropping the battery drain current to less than 2μA.The CST4056B 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.
    CST4056B概述:
        CST4056B 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 CST4056B 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 CST4056B automatically enters a low current state dropping the battery drain current to less than 2μA.The CST4056B 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.

    CST4056B特性:
    Protection of battery cell reverse connection 
    Programmable charge current up to 1.1A 
    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 
    Two Status Indication for Charge status, no battery and battery failure indicators 
    C/10 charge termination 
    55μA supply current in shutdown 
    2.9V trickle current charge threshold 
    Soft-Start limits inrush current 
    Battery Temperature Sensing 
    Available in SOP-8 and ESOP-8 package.

    CST4056B应用:
    Cellular Telephones 
    Mobile Power Supply 
    Digital Still Cameras 
    MP3 Players 
    Bluetooth Applications 
    Portable Devices 
    USB Bus-Powered Chargers.

    CST4056B引脚示意图:


    CST4056B引脚说明:


    CST4056B典型应用图:
    Please submit your basic information and send an email Sales@ChipSourceTek.com , or call us at 13823761625 (the same number as wechat), and we will contact you as soon as possible!

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