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UB10803 - ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER

General Description

The UTC UB10803 is a fully-integrated single-cell Li-ion/Polymer battery charger.

The device operates without external FET and blocking diode, and employs a constant-current constant-voltage (CC/CV) charging profile.

Key Features

  • S.
  • A Constant-Current/Constant-Voltage Linear Charger for Single-Cell Li-ion/Polymer Batteries.
  • Integrated Pass Element and Current Sensor.
  • Highly-Integrated, Requiring No External FETs or Blocking Diode.
  • 4.2V Voltage Accuracy: ±1.2% All Temperatures (Available with 4.10V and 4.36V options upon request).
  • Programmable Charge Current 50mA to 500mA.
  • Programmable End-Of-Charge Current by Current Recharge Algorithm 1 DFN-8(2x3).
  • Pre-Charge for Fully Discharged Ba.

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UNISONIC TECHNOLOGIES CO., LTD UB10803 Preliminary CMOS IC ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER  DESCRIPTION SOP-8 The UTC UB10803 is a fully-integrated single-cell Li-ion/Polymer battery charger. The device operates without external FET and blocking diode, and employs a constant-current constant-voltage (CC/CV) charging profile. The fast-charge and end-of-charge (EOC) currents are programmable with independent external resistors. When the battery is deeply discharged to lower than 2.75V, the charger firstly pre-charges the battery with typically 20% of the programmable fast-charge current. When the charge current is reduced to the programmed EOC current level (almost works completely in a constant-voltage (CV) mode), an EOC indication is displayed through the CHG pins.