Li-ion Battery Charger(锂电池充电芯片):CXLB7330,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TOPWg8嘉泰姆

CXLB7330 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 CXLB7330 ideally suited for portable applications. Furthermore the CXLB7330 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 (CXLB7330 is 4.34V),and the charge current can be programmed externally with a single resistor. The MCXLB7330automatically 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 CXLB7330automatically enters a low current state dropping the battery drain current to less than 2μA.The CXLB7330can 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.Wg8嘉泰姆

   产品特点 返回TOPWg8嘉泰姆

●Protection of battery cell reverse connection Wg8嘉泰姆

● Programmable charge current up to 1A Wg8嘉泰姆

●No MOSFET sense resistor or blocking diode required Wg8嘉泰姆

●Complete linear Charger in SOP8 Package for single Cell Lithium-Ion Batteries. Wg8嘉泰姆

●Constant-Current/Constant-Voltage operation with thermal regulation to maximize Rate Without risk of overheating. Wg8嘉泰姆

● Preset 4.2V (CXLB7330A is 4.34V) charge voltage with ±1% accuracy Wg8嘉泰姆

● Automatic Recharge Wg8嘉泰姆

● Two Status Indication for Charge status, no battery and battery failure indicators Wg8嘉泰姆

● C/10 charge termination Wg8嘉泰姆

● 55μA supply current in shutdown Wg8嘉泰姆

● 2.9V trickle current charge threshold Wg8嘉泰姆

● Soft-Start limits inrush current Wg8嘉泰姆

● Battery Temperature SensingWg8嘉泰姆

   应用范围 返回TOPWg8嘉泰姆

●Cellular Telephones Wg8嘉泰姆

●Digital Still Cameras Wg8嘉泰姆

●MP3 Players Wg8嘉泰姆

●Bluetooth Applications Wg8嘉泰姆

●Portable Devices Wg8嘉泰姆

●USB Bus-Powered ChargersWg8嘉泰姆

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