HM4057D Datasheet | H&M Semiconductor

Features Programmable Charge Current Up to 800m A No MOSFET, Sense Resistor or Blocking Diode Required plete Linear Charger for Single Cell Lithium-Ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation- to Maximize Charge Rate Without Risk of Overheating Preset 4.2V Charge Voltage with 1% Accuracy Automatic Recharge 65u A Supply Current in Shutdown 2.9V Trickle Charge Threshold Available in 6-Lead SOT-23 Package Applications Charger for Li-Ion Coin Cell Batteries Portable MP3 Players, Wireless Headsets Bluetooth Applications Multifunction Wristwatches Description The HM4057' is a plete constant-current/ constant voltage linear charger for single cell lithium-ion batteries. Its package and low external ponent count make the HM4057' ideally suited for portable applications. Furthermore. No external sense resistor is needed, and no blocking diode is required due to the...