1A Lithium Ion Battery Linear Charger CXLB7331 complete constant-current/constant voltage linear charger for single cell lithium-ion batteries, ideally suited for portable applications

   产品概述 返回TOPIcL嘉泰姆

CXLB7331 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 CXLB7331 ideally suited for portable applications. Furthermore the CXLB7331is 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 CXLB7331automatically 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 CXLB7331automatically enters a low current state dropping the battery drain current to less than 2μA.The CXLB7331can 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.IcL嘉泰姆

   产品特点 返回TOPIcL嘉泰姆

●Protection of battery cell reverse connection IcL嘉泰姆

● Programmable charge current up to 1A IcL嘉泰姆

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

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

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

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

● Automatic Recharge IcL嘉泰姆

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

● C/10 charge termination IcL嘉泰姆

● 55μA supply current in shutdown IcL嘉泰姆

● 2.9V trickle current charge threshold IcL嘉泰姆

● Soft-Start limits inrush current IcL嘉泰姆

● Battery Temperature SensingIcL嘉泰姆

   应用范围 返回TOPIcL嘉泰姆

●Cellular Telephones IcL嘉泰姆

●Digital Still Cameras IcL嘉泰姆

●MP3 Players IcL嘉泰姆

●Bluetooth Applications IcL嘉泰姆

●Portable Devices IcL嘉泰姆

●USB Bus-Powered ChargersIcL嘉泰姆

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