The new A6263 is the latest addition to the family of automotive qualified LED driver ICs from Allegro MicroSystems Europe.
The new device incorporates a linear programmable current regulator providing up to 100mA from each of four outputs to drive arrays of high brightness LEDs. It is targeted at the automotive market for applications such as map and dome lighting, as well as exterior accent lighting.
The device outputs can be connected in parallel or left unused as required. The regulated LED current from each output is set by a single reference resistor. Current is matched in each string without the use of ballast resistors. Driving LEDs with constant current ensures safe operation with maximum possible light output.
The A6263 incorporates protection against a range of common faults, including LED string shorted to ground, single or multiple LED shorts, LED string open, IC pin open or short and over-temperature.