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ISL6255 - Highly Integrated Battery Charger

Datasheet Summary

Features

  • ±0.5% Charge Voltage Accuracy (-10°C to 100°C).
  • ±3% Accurate Input Current Limit.
  • ±3% Accurate Battery Charge Current Limit.
  • ±25% Accurate Battery Trickle Charge Current Limit (ISL6255A).
  • Programmable Charge Current Limit, Adapter Current Limit and Charge Voltage.
  • Fixed 300kHz PWM Synchronous Buck Controller with Diode Emulation at Light Load.
  • Output for Current Drawn from AC Adapter.
  • AC Adapter Present Indicator.

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Datasheet preview – ISL6255

Datasheet Details

Part number ISL6255
Manufacturer Renesas
File Size 1.09 MB
Description Highly Integrated Battery Charger
Datasheet download datasheet ISL6255 Datasheet
Additional preview pages of the ISL6255 datasheet.

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Full PDF Text Transcription

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DATASHEET ISL6255, ISL6255A Highly Integrated Battery Charger with Automatic Power Source Selector for Notebook Computers FN9203 Rev 2.00 May 23, 2006 The ISL6255, ISL6255A is a highly integrated battery charger controller for Li-Ion/Li-Ion polymer batteries. High Efficiency is achieved by a synchronous buck topology and the use of a MOSFET, instead of a diode, for selecting power from the adapter or battery. The low side MOSFET emulates a diode at light loads to improve the light load efficiency and prevent system bus boosting. The constant output voltage can be selected for 2, 3 and 4 series Li-Ion cells with 0.5% accuracy over temperature. It can also be programmed between 4.2V+5%/cell and 4.2V-5%/cell to optimize battery capacity.
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