SOURCE: Intersil


June 28, 2011 10:00 ET

Intersil's Integrated LED Drivers Deliver Best-in-Class Channel Matching, Accuracy for TFT LCD Backlighting Applications

The ISL97682/3/4 Provide up to 90 Percent Efficiency in Compact Packages for Tablets and Sub-Notebooks

MILPITAS, CA--(Marketwire - Jun 28, 2011) - The newest LED drivers from Intersil Corporation (NASDAQ: ISIL) deliver the industry's best current accuracy and channel matching for small- to medium-sized LCD backlights in smartphones, tablets and sub-notebooks.

The ISL97682, ISL97683 and ISL97684 are compact 2-, 3-, and 4-channel LED drivers that operate across an input voltage range of 4V to 26.5V and deliver outputs up to 45V. The devices can also operate from inputs as low as 3V and deliver outputs up to 26.5V in the bootstrap configuration, making them suitable for systems using single lithium-ion batteries.

The devices incorporate optional automatic switching between PWM and PFM modes, providing the best (up to 90%) power efficiency across the input voltage and output load range. All devices feature current accuracy of 1.5% and channel-to-channel current matching of 0.7%, providing uniform backlighting for 6-inch to 15-inch TFT LCD panels. The high performance and versatility of this product family also makes it suitable for industrial and automotive displays.

Features and Specifications

  • 3V minimum supply voltage (using bootstrap operation) means no 5V bias supply is required to achieve very high efficiency
  • Optional channel-to-channel phase shift control reduces video and audio noise interference
  • Channel-to-channel current matching within 0.7% assures uniform backlight brightness
  • Adjustable dimming frequency up to 30kHz shifts ripple above the audio range, eliminating audible noise
  • Open-string, shorted-string, over-voltage and over-temperature protection saves the device and system in case of failure

Pricing and Availability
The ISL97682/3/4 are available now in a 3mm x 3mm, 16-pin TQFN package and are priced at $1.35 each in 1,000-unit quantities.

For more information on the ISL97682 please visit

For more information on the ISL97683 please visit

For more information on the ISL97684 please visit

About Intersil
Intersil Corporation is a leader in the design and manufacture of high-performance analog, mixed signal and power management semiconductors. The Company's products address some of the fastest growing markets within the communications, computing, consumer and industrial industries. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at

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