照明用 LED ドライバー
優れたサーマルマネジメントと175°Cでの動作を特長とする当社の先進的なLEDドライバは、効率的で柔軟なソリューションを提供し、鮮やかで制御性に優れた照明を実現します。
Featured Products
A80803
Multi-Topology LED Driver with PWM Dimming and Seamless High/Low Intensity Modes
A80804
4-Channel High-Power Linear LED Driver With Individual PWM Control
ALT80800
Automotive-Grade, Constant-Current 2.0 A PWM Dimmable Synchronous Buck LED Driver
A6217
The A6217 is a single IC switching regulator that provides constant-current output to drive high-power LEDs.
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 battery voltage and power requirements for the headlights used in these vehicles.
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 the reliability of LED systems in RCL applications.
Application Note
Two Wheeler Stop/Tail LED Driver
AN296207 - In two-wheeler stop and tail light applications, particularly those that use a Rear Combination Lamp (RCL), OEMs use LEDs instead of incandescent bulbs to ensure longer application life.
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 efficient lighting and aesthetics.
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 when driving a high number of LEDs.
Brochure
Brochure: LED Headlamps for Mainstream Vehicles
The A80803 is a switch-mode, constant-current controller for high-power LED automotive lighting applications that addresses many common pain points for headlight designers.
Application Note
An Efficient Voltage-Optimized LED Driver (A80804) with Buck-Boost Controller (A4450)
This application note presents the implementation of an adaptive preregulator whose output voltage is dynamically adjusted to provide optimal voltage to a linear LED driver
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.