Allegro MicroSystems, LLC Announces New Multiple-Output Regulator For Automotive LCD Displays

Flexible Automotive Bias Supply with Programmable Voltages

Allegro MicroSystems, LLC announces a new AEC-Q100 qualified, multiple-output regulator for powering automotive LCD displays. Allegro’s A8603 operates with fixed switching frequency that can be either programmed or synchronized with an external clock signal between 350 kHz and 2.25 MHz. This will minimize interference with AM and FM radio bands. An I²C™-compliant serial interface allows a system microcontroller to configure the A8603 by writing into its internal registers. A system controller can also access A8603’s status registers in case of fault conditions.

The A8603 incorporates a boost stage followed by two linear regulators and two charge-pump regulators. Each output voltage can be programmed independently through the I²C™ serial interface. During power-up and shutdown, the outputs are turned on and off in preprogrammed sequences with adjustable delay. This allows the user to meet the sequencing requirements for specific LCD panels. Short circuit protection is provided for all outputs. The internal boost switch is protected against overcurrent and overvoltage.

The A8603 is available in a 24-pin, 4 × 4 mm QFN package. It has an exposed thermal pad to allow operation at high ambient temperatures and is lead (Pb) free with 100% matte-tin leadframe plating.

About Allegro
Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centers located worldwide. Further information about Allegro can be found at www.allegromicro.com

Allegro MicroSystems Europe, headquartered in Chertsey, United Kingdom, is the European sales and marketing operation, and operates a network of representatives and distributors throughout Europe.  Allegro also has an engineering design centre in Edinburgh in Scotland and an application and marketing centre in Annecy in France.