MX4036 1A线性锂电池充电芯片 4.2V/4.35V/4.05V/4.4V/4.1V充满电压可选

MX4036 1A线性锂电池充电芯片 4.2V/4.35V/4.05V/4.4V/4.1V充满电压可选

1 Features

* Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating

* Continuous Programmable Charge Current Up to 1A

* No MOSFET, Sense Resistor or Blocking Diode Required

* Preset 4.2V/4.35V/4.05V/4.4V/4.1V Charge Voltage with ±1% Accuracy

* Charge Status Output Pin

* Battery Temperature Sensing

* C/10 Charge Termination

* 2.9V Trickle Charge Threshold

* 100μA Supply Current in Shutdown mode

* Automatic Recharge

2 Applications

* MP3 /MP4 Players

* Wireless handsets

* USB charge applications

* Charging docks, charging cradles

3 Description

  The MX4036 is a complete constant-current/constant-voltage linear charger for single cell lithium rechargeable battery. No external sense resistor is needed, and no blocking diode is required due to the internal P-MOSFET architecture. Furthermore, the MX4036 is specifically designed to work within USB power specifications. It’s package and low external component count make the MX4036 ideally suited for portable applications. An internal block regulates the current when the junction temperature increases, in order to protect the device when it operates in high power or high ambient temperature. The charge voltage is fixed at 4.2V/4.35V/4.05V/4.4V/4.1V, and the charge current can be programmed externally with a single resistor. The MX4036 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 MX4036 automatically enters a low power sleep mode, dropping the battery drain current to less than 2μA.