The A6269 is a linear, programmable current regulator providing up to 200 mA from each of two outputs to drive arrays of high brightness LEDs. The regulated LED current from each output, accurate to 5%, is set by a single reference resistor. Current matching in each string is better than 10% without the use of ballast resistors. Driving LEDs with constant current ensures safe operation with maximum possible light output.
Output control is provided by an enable input, giving direct control for PWM applications, and by a debounced switch input, proving an on/off toggle action.
Optimum performance is achieved driving 1 to 3 LEDs in each string: up to 2 strings at 200 mA each. Outputs can be connected in parallel or left unused as required.
Short detection is provided to protect the LEDs and the A6269 during a short-to-ground at any LED output pin. The output will automatically resume the regulated current when the short is removed.
A temperature monitor is included to reduce the LED drive current if the chip temperature exceeds an adjustable thermal threshold.
The device package is an 8-pin SOICN (LJ) with exposed pad for enhanced thermal dissipation. It is lead (Pb) free, with 100% matte tin leadframe plating.
Astrorep Inc. (Allegro and Sanken Semiconductors,
Sanken Power Supplies)
700 Veterans Memorial Hwy
Hauppauge, NY 11788
If this is not your local representative, find your local sales rep here.
|Part Number||Package Type||Temperature||RoHS
|Part Composition /
|A6269KLJTR-T||8-lead SOIC||-40°C to 125°C||Yes||View Data||Contact your
local sales rep
|APEK6269KLJ-01-MH||DEMO BOARD||-40°C to 125°C||No||--||Contact your
local sales rep