A6260: High Brightness LED Current Regulator

Description

The A6260 is a linear, programmable current regulator providing up to 350 mA for driving high-brightness LEDs. The LED current, accurate to 4%, is set by a single low-power sense resistor. Driving LEDs with constant current ensures safe operation with maximum possible light output. For automotive applications, optimum performance is achieved when driving between 1 and 3 LEDs at currents up to 350 mA.

The low dropout voltage of the A6260 allows a single white LED to be driven safely, at full current, with a supply voltage down to 6 V.

An enable input allows PWM dimming and can be used to enable low-current sleep mode. The rate of change of current during PWM switching is limited to reduce EMI.

Overcurrent detection is provided to protect the LEDs and the A6260 during short-to-supply or short-to-ground at any LED terminal.

The integrated temperature monitor can be used to reduce the LED drive current if the chip temperature exceeds the thermal limit.

The device is available in an 8-pin SOIC package with exposed thermal pad (suffix LJ). The device is lead (Pb) free with 100% matte-tin leadframe plating.

Top Features

  • AEC Q-100 qualified 
  • LED drive current up to 350 mA
  • 6 to 40 V supply
  • Reverse battery protection
  • Low drop-out voltage
  • LED short circuit and thermal protection
  • 10 µA maximum shutdown current
  • PWM dimming control input
  • Current slew rate limiting

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A6260SLJ-T 8-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A6260SLJTR-T 8-lead SOIC -20°C to 85°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A6260KLJ-T 8-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
A6260KLJTR-T 8-lead SOIC -40°C to 125°C Yes View Data Contact your
local sales rep
Check
Distributor Stock
APEK6260KLJ-01-T DEMO BOARD -40°C to 125°C No -- Contact your
local sales rep
Check
Distributor 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.

Packaging

The device is available in an 8-pin SOIC package with exposed thermal pad (suffix LJ). The device is lead (Pb) free with 100% matte-tin leadframe plating.

LJ SOIC with exposed pad 8 pin