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Single LNB regulator IC offers higher switching frequency and lower supply current in satellite receiver application


The new A8304 from Allegro MicroSystems Europe is the latest member of a family of single low-noise block regulator (LNBR) ICs for satellite receiver applications.

The new device is a monolithic linear and switching voltage regulator which is specifically designed to provide the power and interface signals to an LNB down-converter via coaxial cable.


The A8304 requires few external components, with the boost switch and compensation circuitry integrated into the device. The 704 kHz switching frequency and user-controlled output current limit minimise the size of the passive filtering components.

An I2C™-compatible interface provides control capabilities for complex system requirements, as well as diagnostic information for system fault reporting. A “sleep” pin is also available to maximise power savings and to quickly shut down the device if required, without using I2C™ control. New control features for output source and sink current are also incorporated.

The A8304SESTR-T is provided in a very small 3 × 3 mm QFN package (suffix ES) with exposed pad for thermal dissipation. It is lead (Pb) free, with 100% matt tin leadframe plating.


Please click here to download a copy of the data sheet.



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

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.




Allegro MicroSystems Europe Ltd

Melita House

124 Bridge Road



KT16 8LH

Tel: +33 (0) 4 50512359

Fax: +33 (0) 4 505 12083


Media Contacts:

Mary Regan

Allegro MicroSystems Europe Ltd

Tel: +33 (0) 4 50512359




This press release can be viewed and downloaded from

This includes the option of downloading a high-resolution JPEG version of the photograph.

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