Allegro MicroSystems A6264
The A6264 is a linear, programmable current regulator providing up to 100 mA from each of four outputs to drive arrays of high brightness LEDs. The LED current can be switched between high current and low current for stop/tail applications. The two LED current levels from each output, accurate to 5%, are set by two reference resistors.| Part No. | A6264 |
|---|---|
| Datasheet | A6264 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Automotive Stop/Tail LED Array Driver |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● AEC-Q100 qualified● Total LED drive current up to 400 mA
● Current shared equally up to 100 mA by up to 4 strings
● 6 to 50 V supply
● Low dropout voltage
● LED output short-to-ground and thermal protection
● Current slew rate limit
● Current set by reference resistor
● Automotive temperature range (–40°C to 150°C)
APPLICATIONS
● Automotive tail, stop, and turn lights PACKAGES 10-pin MSOP with exposed thermal pad (suffix LY) 16-pin TSSOP with exposed thermal pad (suffix LP) Not to scaleDESCRIPTION
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. Optimum performance is achieved when driving 4 strings with 1 to 3 LEDs in each string, at a total current of up to 100 mA in each string. Outputs can be connected in parallel or left unused as required. Short detection is provided to protect the LEDs and the A6264 during a short-to-ground at any LED output pin.
