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High-Performance Power ICs and Hall-Effect Sensors
Allegro MicroSystems, Inc. Announces a Comprehensive
Family of Voltage Regulation ICs for Satellite Receiver Applications
Power Management IC Family (A8281/8282/8285/8287) 
Worcester, MA - December 11, 2003 — Allegro MicroSystems, Inc. announces the release of four new low-noise block voltage regulators (LNBRs) for satellite set-top box systems. Designed to future-proof set-top designs, these highly integrated devices feature legacy system compatibility and offer the flexibility of two-way DiSEqCTM communications.
Intended for analog and digital satellite receivers, the highly efficient LNBR family consists of monolithic linear and switching voltage regulators, specifically designed to provide both power and interface signals to the LNB downconverter via the coaxial cable.
According Mark Gaboriault, Allegro's Power Management Strategic Marketing Manager, "This family of devices delivers exactly what our customers have been yearning for— a flexible yet highly integrated part (including output FETs), best-in-class power efficiency, and a competitive solution cost in an industry-standard package."
Specific features and benefits of the Allegro LNBR family include:
- Wide Operating Voltage Range — buck or boost versions are both available
- High Efficiency — integrated switching regulator tracks to just above the linear regulator output, providing low power dissipation and permit single voltage supply
- Reduced Component Count — integrated FET and selectable output voltages
- DiSEqCTM 1.x and 2.x Compatible — internal 22 kHz tone oscillator or optional bypass
- I2CTM Bidirectional Communication — reads status and writes control of 8287 and 8285 boost devices
- Legacy System Compatibility — 13/18 V output switching for non-DiSEqCTM communication
- Comprehensive Protection — including internal over-temperature, externally adjustable short circuit, and reverse current protection
- Industry Standard Packages — 16-lead SOIC and 24-lead SOIC
This LNBR family is manufactured using Allegro's ABCD3 (Allegro Bipolar CMOS DMOS 3rd generation) process, and is supplied in either a standard 24-lead or 16-lead SOIC package.
Allegro MicroSystems, Inc. is a supplier of advanced mixed-signal power semiconductors and Hall-effect sensors targeted toward the automotive, communications, computer/office automation, consumer and industrial markets. It maintains a leadership position in the integrated magnetic sensor and integrated motor driver product segments. With over 2,000 employees, Allegro is headquartered in Worcester, MA. Further information about Allegro, as well as free samples on our products, can be found at www.allegromicro.com.
Editorial Contact:
Stephanie Fennelly
Director – Marketing Communications
Tel: (508) 854-5363
sfennelly@allegromicro.com