Intel Intersil ISL97632 Data Sheet
Summary
The ISL97632 is a high-efficiency, integrated PWM boost LED driver designed for reliable and adjustable backlight solutions in portable electronics. This technical manual provides comprehensive specifications for professional backlighting designers, detailing features such as 5-bit digital dimming control, integrated Over-Voltage Protection (OVP), and support for driving up to six LEDs in series (14V, 18V, or 26V options). It is ideal for engineers developing smartphones, GPS units, and automotive displays requiring stable performance across a wide operating temperature range.
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ISL97632
February 22, 2008 FN9239.3Data Sheet
White LED Driver with Digital Dimming Features
The ISL97632 represents an efficient and highly integrated 5-Bit Digital Dimming Control PWM boost LED driver that is suitable for 1.8” to 3.5” LCDs
Drives up to 6 LEDs in Series
that employ 2 to 6 white LEDs for backlighting. With
integrated Schottky diode, OVP, and dynamic digital OVP (14V, 18V and 26V for 3, 4, and 6 LEDs applications)
dimming capability, the ISL97632 provides a simple, reliable,
Integrated Schottky Diode
and flexible solution to the backlight designers.
2.4V to 5.5V input
The ISL97632 features a simple single-wire digital interface
86% Efficiency
that provides a 5-bit dimming control. The dimming signal adjusts the FB voltage and therefore the LED brightness in a 1.4MHz Switching Frequency Allows Small LC DC manner in 32 linear steps. An EN pin can be used to
Enable for Shutdown Function or Zero Brightness Setting
provide a zero brightness setting or shutdown power saving
function. 1µA Shutdown Current The ISL97632 is available in the 8 Ld TDFN (2mmx3mm) Internally Compensated
package. There are 14V, 18V, and 26V OVP options that are
8 Ld TDFN (2mmx3mm)
suitable for 3, 4, and 6 LEDs backlight applications
Pb-Free (Ro HS Compliant)
respectively. The ISL97632 is specified for operation over the -40°C to +85°C ambient temperature at input voltage
Applications
from 2.4V to 5.5V.
LED backlighting for
Pinout Cell phones
ISL97632 Smartphones (8 LD 2x3 TDFN)
www.BDTIC.com/Intersil MP3
TOP VIEW
PMP Automotive Navigation Panel
8GND LX
Portable GPS
VIN VOUT
Ordering Information
EN FBSW
SDIN FB PACKAGE
PART NUMBER PART TAPE AND REEL PKG. (Note) MARKING (Pb-Free) DWG.#
ISL97632IRT14Z-T* ELB 8 Ld 2x3 TDFN L8.2x3A
Typical Application Circuit
ISL97632IRT14Z-TK* ELB 8 Ld 2x3 TDFN L8.2x3A
10µH or 22µH
ISL97632IRT18Z-T* ELC 8 Ld 2x3 TDFN L8.2x3A
ISL97632IRT18Z-TK* ELC 8 Ld 2x3 TDFN L8.2x3A
VIN LX
ISL97632IRT26Z-T* ELD 8 Ld 2x3 TDFN L8.2x3A
EN VOUT
ISL97632IRT26Z-TK* ELD 8 Ld 2x3 TDFN L8.2x3A
SDIN *Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
FBSW special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination FB finish, which is Ro HS compliant and compatible with both Sn Pb and
Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006-2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Page Summary Contents For Intel Intersil ISL97632 Data Sheet
Manual Details
| Brand | Intel |
|---|---|
| Pages | 9 |
| File Size | 161.36 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
What is the operational temperature range for the ISL97632?
The device operates from a range of -40°C to +85°C ambient temperatures.
How can I set the backlight to zero brightness or power down?
Use the EN pin; enabling it allows for a zero brightness setting or shutdown power saving function.
What is the typical overall efficiency and dimming capability?
It features 86% efficiency with simple single-wire digital interface control, offering 5-bit dimming in 32 linear steps.
Does this device comply with RoHS standards?
Yes, it is Pb-Free (RoHS Compliant), and the package uses special Pb-free materials and finishes.