Overview

The ISL97632 represents an efficient and highly integrated PWM boost LED driver that is suitable for 1. 8 to 3. 5 LCDs that employ 2 to 7 white LEDs for backlighting. With integrated Schottky diode, OVP, and dynamic digital dimming capability, the ISL97632 provides a simple, reliable, and flexible solution to the backlight designers. The ISL97632 features a simple 1-Wire digital interface that provides a 5-bit dimming control. The dimming signal adjusts the FB voltage and therefore the LED brightness in a DC manner in 32 linear steps. An EN pin can be used to provide a zero brightness setting or shutdown power saving function. The ISL97632 is available in the 8 Ld TDFN (2mmx3mm) package. There are 14V, 18V, and 26V OVP options that are suitable for 3, 4, and 7 LEDs (3. 5V/20mA type) backlight applications respectively. The ISL97632 is specified for operation over the -40°C to +85°C ambient temperature at input voltage from 2. 4V to 5. 5V.

ISL97632 Functional Diagram
ISL97632 Functional Diagram
  • 1-Wire 5-Bit Digital Dimming
  • Drives Up to 7 LEDs in Series (3.5V/20mA type)
  • OVP (14V, 18V and 26V for 3, 4, and 7 LEDs applications)
  • Integrated Schottky Diode
  • 2.4V to 5.5V input
  • 86% Efficiency
  • 1.4MHz Switching Frequency Allows Small LC
  • Enable for Shutdown Function or Zero Brightness Setting
  • 1µA Shutdown Current
  • Internally Compensated
  • 8 Ld TDFN (2mmx3mm)
  • Pb-Free (RoHS Compliant)

Applications

  • LED backlighting for Cell phones Smartphones MP3 PMP Automotive Navigation Panel Portable GPS

Documentation

= Featured Documentation
Type Title Date
Datasheet
ISL97632 Datasheet
PDF 548 KB
Product Change Notice
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II
PDF 398 KB
Other
TB469: Using the ISL97632 White LED Driver Demo Board
PDF 66 KB
3 items

Design & Development

ISL97632IRTZ-EVALZ Evaluation Board Layout

ISL97632IRTZ-EVALZ

Evaluation
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LED Driver with 1-Wire Dimming Evaluation Board

The ISL97632 is an efficient and highly integrated PWM boost LED driver that is suitable for 1.8" to 3.5" LCDs that employ 2 to 7 white LEDs for backlighting. With an...

Featured Documents:
ISL97632IRTZ-EVALZ User Guide

ECAD Models

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Product Options

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    Pkg. Type
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    ISL97632IRT14Z-TK
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    		TDFN Reel 1000
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