Backlight LED drivers

High-performance drivers for a wide variety of screen sizes

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Our large portfolio of step-up (boost) LED drivers uses global dimming techniques for LCD backlighting. You can use a single-channel option with up to 90% efficiency or maintain the same LED count and use a higher-channel count option to improve total system efficiency. Our backlight LED drivers extend the life of your LED with a range of protection features and optimize LCD screen performance with high-dimming and contrast ratios.

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Technical resources

Application note
Application note
Some Guidelines and Tips for the LED Driver Application
Learn to estimate maximum output current, minimize audio noise and estimate voltage drop to select the right backlight driver.
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Application note
Application note
Inductor Selection in Boost Converters for LCD Backlight Applications
This application note discusses important parameters of the inductor and how to select the right inductor for LCD backlight applications.
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Video series
Video series
LED backlight design considerations
Learn about key design considerations for an LCD backlight as it pertains to various applications.

Design & development resources

Reference design
Backlight and LCD Bias Reference Design for 90-Hz Refresh-Rate Virtual/Augmented Reality Displays
This reference design describes the power solution for LCD displays in wearable devices, especially in augmented-reality (AR) and virtual reality (VR) headsets. The high current accuracy backlight driver is achieved by LP8556, which provides high current during small duty cycle synchronized with (...)
Reference design
70V, 60mA White LED Driver with Dimming Control and Automatic Thermal Scale-Back Reference Design

Compact, High Efficienct (>90%) White LED Driver.  Drives a 440 lumen White LED at up to 70V at up to 60mA from a 6V to 18V source.  Includes voltage controlled dimming with automatic thermal to current scale-back for preventing high LED temperatures.  Designed for genral purpose (...)

Reference design
Smart Backlight Control by White LED Driver, Ambient Light, and Proximity Sensor Reference Design
This reference design conserves power and extends LCD backlight life by dynamically adjusting the LCD backlight brightness relative to the environment's ambient light levels. A capacitive proximity sensor saves power and increases LCD backlight life by waking up the system from sleep or (...)

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