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LED Drivers

Allegro LED drivers lead the industry in reliability and robustness, offering one of the largest selections of wide-input, Grade 0, LED Driver ICs.

With multiple device topologies, our LED drivers cover a wide range of applications. Flexible and easy to use, they are efficient and feature high temperature 150°C operation. Fast/controlled start up allows minimization of time-to-light, highlighting safety considerations in both external lighting and internal displays.

Tested in our own EMC laboratories, Allegro’s LED driver solutions ensure they meet stringent EMC requirements as we provide proven EMC reference designs to simplify and accelerate your design process.

LED Drivers for Backlighting

Allegro offers a variety of highly integrated LED drivers for backlighting to match your requirements for input voltage range, number of LEDs per string, number of strings and LED current . This includes devices that are well matched for varying display sizes, including the trend toward larger automotive infotainment and cluster displays as well as heads-up displays (HUD).

Our AEC-Q100 qualified devices operate over the complete automotive/industrial voltage range and temperatures to 150°C.

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LED Drivers for Lighting

Optimize your automotive or industrial lighting designs with a wide variety of topologies, channel counts, output currents and feature sets. Providing flexibility and functionality, our AEC-Q100 qualified devices operate over the complete automotive/industrial voltage range and temperatures to 150°C.

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Featured Products

Allegro-32-Pin-QFN-with-exposed-thermal-pads-ET-package

A80803

Multi-Topology LED Driver with PWM Dimming and Seamless High/Low Intensity Modes

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A6211

The A6211 is a single IC switching regulator that provides constant-current output to drive high-power LEDs. It integrates a high-side N-channel DMOS switch for DC-to-DC step- down (buck) conversion. A true average current is output using a cycle-by-cycle, controlled on-time method.

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ALT80800

Automotive-Grade, Constant-Current 2.0 A PWM Dimmable Synchronous Buck LED Driver

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ALT80802

Wide Input Voltage, Adjustable Frequency, Buck-Boost or Buck 2 Amp LED Driver

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Documentation & Resources

Application Note

Design Considerations in Selection of Converter Configuration for Automotive LED Headlight Applications

This application note discusses LED headlights for two-wheelers, passenger vehicles, commercial vehicles, and mild hybrid vehicles, and explores ...

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Technical Article

Overcoming Long Term Reliability Challenges in Two-Wheeler Rear Combination Lamps

P0240: Using Allegro's LED drivers with integrated noncontact Hall-effect switches instead of mechanical switches can prevent corrosion and improve ...

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Application Note

Two Wheeler Stop/Tail LED Driver

October 28, 2020

AN296207 - In two-wheeler stop and tail light applications, particularly those that use a Rear Combination Lamp (RCL), OEMs use LEDs instead of ...

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Technical Article

Pre-Emptive Boost Control Improves LED Driver Performance

This article demonstrates the PWM dimming benefits achieved by PEB when compared to the behavior of conventional LED driver control methods.

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Application Note

High Voltage Buck-Boost LED Headlamp Driver Using Allegro A6271-1

This application note discusses the features and application of the Allegro A6271-1 switching LED controller in automotive high-power applications ...

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Application Note

Buck Controller Implementation Using A80803 with Slew-Rate Control for 48 V Automotive LED Headlight Applications

The proliferation of light-emitting diode (LED) drivers in various automotive applications over the past decade has been driven by a need for ...

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