CXLB7398 4.2V/4.35V 1A 锂电池充电管理芯片complete constant-current/constant voltage linear charger for single cell lithium-ion batteries specifically designed to work within USB power specifications

   产品概述 返回TOPNvb嘉泰姆

     CXLB7398 is a complete constant-current/constant voltage linear charger for single cell lithium-ion batteries. With a thermally enhanced 8-PIN SOP package on the bottom and low external component count make the CXLB7398 ideally suited for portable applications. Furthermore the CXLB7398  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 PMOSFET 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 / 4.34V, and the charge current can be programmed externally with a single resistor.  The CXLB7398 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 CXLB7398 automatically enters a low current state dropping the battery drain current to less than 2μA.The    CXLB7398 can be put into shutdown 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.

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   产品特点 返回TOPNvb嘉泰姆

●Protection of battery cell reverse connection Nvb嘉泰姆

● Programmable charge current up to 1A  Nvb嘉泰姆

●No MOSFET sense resistor or blocking diode required Nvb嘉泰姆

●Complete linear Charger in SOP8 Package for single Cell Lithium-Ion Batteries. Nvb嘉泰姆

●Constant-Current/Constant-Voltage  operation with thermal regulation to maximize Rate Without risk of overheating. Nvb嘉泰姆

● Preset 4.2V / 4.34V charge voltage with ±1% accuracy Nvb嘉泰姆

● Automatic Recharge Nvb嘉泰姆

● Two Status Indication for Charge status, no battery and battery failure indicators Nvb嘉泰姆

● C/10 charge termination Nvb嘉泰姆

● 55μA supply current in shutdown Nvb嘉泰姆

● 2.9V trickle current charge threshold Nvb嘉泰姆

● Soft-Start limits inrush current Nvb嘉泰姆

● Battery Temperature Sensing Nvb嘉泰姆

   应用范围 返回TOPNvb嘉泰姆

●Cellular Telephones Nvb嘉泰姆

●Digital Still Cameras Nvb嘉泰姆

●MP3 Players Nvb嘉泰姆

●Bluetooth Applications Nvb嘉泰姆

●Portable Devices Nvb嘉泰姆

●USB Bus-Powered ChargersNvb嘉泰姆

   技术规格书（产品PDF) 返回TOP Nvb嘉泰姆

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