A6265: Automotive High Current LED Controller

This device is in production, however, it has been deemed Pre-End of Life. The product is approaching end of life. Within a minimum of 6 months, the device will enter its final, Last Time Buy, order phase. Date of status change: December 5, 2018

Recommended Substitutions: A6271KLPTR-T-1

The A6265 is a DC-to-DC converter controller, providing a programmable constant current output for driving high power LEDs in series. Driving the LEDs in series ensures identical currents and uniform brightness. For automotive applications, optimum performance is achieved when driving between 2 and 10 LEDs at currents up to 1 A.

The A6265 provides a cost-effective solution using an external logic-level MOSFET and minimum additional external components. The maximum LED current is set with a single external sense resistor and can be modified using a current reference input. Direct PWM control is possible via the Enable input, which also provides a shutdown mode.

This DC-DC converter can be configured as a ground-referenced boost converter or as a supply-referenced boost converter providing buck-boost capability. The buck-boost topology used ensures that there is no leakage path through the LEDs when in shutdown and no inrush current at power-up.

Integrated diagnostics and two fault outputs give indication of undervoltage, chip overtemperature, output open circuit, LED short circuit and LED undercurrent, and can be configured to provide short to supply and short to ground protection for the LED connections. A unique feature is the ability to detect one or more shorted LEDs.

The device is provided in a 16-pin TSSOP package with exposed thermal pad (suffix LP). It is lead (Pb) free, with 100% matte tin leadframe plating.

Applications

  • Automotive high power LED lighting systems
  • Fog lights, reversing lights, daytime running lights
  • Headlights
DATASHEETS
SAMPLE & BUY
Arrow Electronics (Distributor, Allegro & Sanken Semiconductors)
25 Hub Drive
Melville, NY 11747
Phone: 1-800-777-2776 for local distributor
Web: www.arrow.com

If this is not your local representative, find your local sales rep here.

  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Constant current LED drive
  • 6.5 to 50 V supply
  • Boost or buck-boost modes
  • Drives between 2 and 10 LEDs in series
  • Programmable switching frequency 100 to 700 kHz
  • Open LED overvoltage indication and protection
  • Single and multiple LED short indication
  • LED short to ground and supply protection
  • PWM dimming control
  • 10 µA shutdown current including LED leakage

The device is provided in a 16-pin TSSOP package with exposed thermal pad (suffix LP). It is lead (Pb) free, with 100% matte tin leadframe plating.

LP TSSOP 16 pin

Design Support Tools

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Product Image Functional Block Diagrams Typical Applications

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A6265KLPTR-T 16-lead TSSOP -40°C to 125°C Yes View Data pre-EOL Contact your
local sales rep
Check Stock
APEK6265KLP-01-T DEMO BOARD -40°C to 125°C No -- pre-EOL Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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