ME4064A Datasheet | ChipSourceTek

Description Features ME4064A is a plete constant-current/constant - Protection of battery cell reverse connection voltage linear charger for single cell lithium-ion - No MOSFET sense resistor or blocking diode batteries. Furthermore the ME4064A is specifically required designed to work within USB power specifications. - plete Linear Charger in Thin SOT Package for No external sense resistor is needed and no Single Cell Lithium-Ion Batteries blocking diode is required due to the internal PMOSFET architecture .Thermal feedback regulates 技 the charge current to limit the die temperature during k high power operation or high ambient 科 e temperature .The charge voltage is fixed at 4.2V,and T the charge current can be programmed externally with 特 e a single resistor. The ME4064A automatically 源 rc terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final u float voltage is reached. 矽 o When the input supply (wall adapter or USB supply) is removed the ME4064A automatically enters a low S current state dropping the battery drain current to less ip than 2μA.The ME4064A can be put into shutdown mode reducing the supply current to 55μA. Ch Other features include charge current monitor, - Constant-Current/Constant-Voltage operation with thermal regulation to maximize Rate Without risk of overheating. - Preset 4.2V charge voltage with ±1% accuracy - Automatic Recharge - Charges Single Cell Li-Ion Batteries Directly from USB Port - C/10 charge termination - 55μA supply current in shutdown - 2.9V trickle current charge threshold - Soft-Start limits inrush current - Charge Status Output Pin Package - 5-pin SOT23-5 - 6-pin- DFN2- 2-6L undervoltage lockout, automatic recharge and a Applications status. - Cellular Telephones, PDAs, MP3 Players - Charging Docks and Cradles - Bluetooth Applications TEL: +86-0755-27595155 27595165 FAX: +86-0755-27594792 WEB:Http://.Chip Source Tek. E-mail: Tony.Wang@Chip Source Tek. In Fo@Chip Source...