Quality Standards and Environmental Certifications
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Automotive High-Current LED Controller with Programmable Multi-Topology Operation

A6271-1

A6271-1 Product image

The A6271-1 provides a flexible and efficient solution for driving high-power LEDs, supporting boost, buck-boost, buck, and SEPIC configurations. Features include programmable switching frequency, PWM dimming, and comprehensive protection.

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Top Features

Packaging

  • Automotive AEC-Q100 qualified
  • Constant-current LED drive
  • 4.2 to 50 V supply
  • 53.3 V maximum LED string voltage
  • Boost, buck-boost, buck, and SEPIC switching converters
  • Programmable switching frequency 70 to 700 kHz
  • PWM-controlled PMOS driver allows accurate LED current control at low duty cycles
  • Dimming via external PWM, internal PWM and/or analog dimming
  • Frequency dither scheme for effective spread spectrum to reduce EMI
  • Comprehensive fault protection and fault flag

Typical Applications

  • Automotive High-Power LED Lighting Systems
  • Fog Lights, Reversing Lights, Daytime Running Lights, Position Lights, Headlights
16-pin eTSSOP (LP) with exposed thermal pad
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Part Number Specifications and Availability

Documentation and Resources

Documentation

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Documents Found: 2
Document Type Document Name
Application Note
Design Considerations in Selection of Converter Configuration for Automotive LED Headlight Applications
Application Note
High Voltage Buck-Boost LED Headlamp Driver Using Allegro A6271-1