Overview

Description

The ISL88733 is a highly integrated Lithium-ion battery charger controller, programmable over the SMBus system management bus (SMBus). The ISL88733 is intended to be used in a smart battery charger (SBC) within a smart battery system (SBS) that throttles the charge power such that the current from the AC-adapter is automatically limited. High efficiency is achieved with a DC/DC synchronous-rectifier buck converter, equipped with diode emulation for enhanced light load efficiency. The ISL88733 charges one to four Lithium-ion series cells, and delivers up to 8A charge current. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy with 10mΩ sense resistors. The ISL88733 provides 0. 5% end-of-charge battery voltage accuracy. The ISL88733 is available in a small 5mm x 5mm 28 Ld Thin (0.8mm) QFN package.

Features

  • Pin compatible with ISL88731
  • Over-temperature and overcurrent protection
  • 0.5% battery voltage accuracy
  • 4% adapter current limit accuracy
  • 3% charge current accuracy
  • SMBus 2-wire serial interface
  • Charge current limited by SMBus DAC OR analog voltage at the CCLIM pin
  • Monitor outputs
  • Adapter current (3% Accuracy)
  • Adapter overcurrent ALERT#. Threshold set by resistor divider
  • AC-adapter detection
  • 11-bit battery voltage setting
  • 6-bit charge current/adapter current setting
  • 8A maximum battery charger current
  • 11A maximum adapter current
  • +8V to +22V adapter voltage range
  • Pb-Free (RoHS compliant)

Comparison

Applications

Applications

  • Notebook computers
  • Tablet PCs

Documentation

Type Title Date
Datasheet - Short-form PDF 196 KB
Brochure PDF 5.49 MB 日本語
End Of Life Notice PDF 603 KB
Product Change Notice PDF 294 KB
Datasheet Log in to Download PDF 1.23 MB
Application Note PDF 509 KB
Application Note PDF 397 KB
7 items

Design & Development

Models