应4.2V移动电源充电IC-ME4057ASPG 封装SOP8 1A Lithium Ion Battery Linear Charger ME4057 Series ME4057 is a complete ctant-current/ctant 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 ME4057 ideally suited for portable applicati. Furthermore the ME4057 is specifically designed to work within USB power specificati. 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 ME4057 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 ME4057 automatically enters a low current state dropping the battery drain current to less than 2mu;A.The ME4057 can be put into shutdown mode reducing the supply current to 55mu;A. Other features include Battery temperature monitor, under-voltage lockout, automatic recharge and two status pins to indicate charge and charge termination. Features ●Protection of battery cell reverse connection ● Programmable charge current up to 1A ●No MOSFET sense resistor or blocking diode required ●Complete linear Charger in SOP8 Package for single Cell Lithium-Ion Batteries. ●Ctant-Current/Ctant-Voltage operation with thermal regulation to maximize Rate Without risk of overheating. ● Preset 4.2V / 4.34V charge voltage with ±1% accuracy ● Automatic Recharge ● Two Status Indication for Charge status, no battery and battery failure indicators 标签：     深圳市移动电源充电ic   深圳市移动电源充电ic厂家

深圳市移动电源充电ic厂家
供应用于锂电池的移动电源充电IC