UB2017 Datasheet - UTC

UB2017, ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER

UNISONIC TECHNOLOGIES CO., LTD UB2017 ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER CMOS IC * .
UTC UB2017 is a complete, constant current and constant voltage linear charger for single cell lithium-ion batteries.

Features

* 54 6 1 23 SOT-26
* Programmable Charge Current Up to 500mA.
* No External MOSFET, Sense Resistor or Blocking Diode Required.
* Complete linear charger in Thin SOT Package for Single Cell / Coin Cell Lithium-lon Batteries.
* Constant Current / Constant Voltage Operation with Thermal

Applications

* using low capacity rechargeable lithium-ion coin cells. Furthermore, UTC UB2017 is specifically designed to work within USB power specifications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. The charge voltage is fixed at 4.2V, and

UB2017-UTC.pdf