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.


  • 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)


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

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TDFN Reel 1000


Title language Type Format File Size Date
Datasheets & Errata
star ISL97632 Datasheet Datasheet PDF 548 KB
User Guides & Manuals
ISL97632IRTZ-EVALZ User Guide Manual - Development Tools PDF 309 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
TB469: Using the ISL97632 White LED Driver Demo Board Other PDF 66 KB


Title language Type Format File Size Date
ISL97632 Demo Board Software v091 Library ZIP 4.15 MB

memoryBoards & Kits

Part Number Title Type Company
ISL97632IRTZ-EVALZ LED Driver with 1-Wire Dimming Evaluation Board Evaluation Renesas