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ISL9220B Datasheet Switching Charger

Manufacturer: Intersil (now Renesas)

Overview: Switching Charger for 1-Cell Li-ion Batteries ISL9220B The ISL9220B is a cost-effective and versatile battery charger for 1-cell Li-Polymer based portable applications.

Key Features

  • synchronous PWM technology, maximizing power efficiency, thus minimizing charge time and heat. The 1.2MHz switching frequency allows use of small external inductors and capacitors. A simple charge current programming method is provided. External resistors program the fast charge and end-of-charge currents. The two status outputs can be used to drive LEDs, or can be connected to the host processor. A programmable charge timer provides the ability to detect defective batteries, and provides a seco.

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