A8291 - Single LNB Supply and Control Voltage Regulator

Product Overview

Allegro MicroSystems

Datasheet Details

Part number	A8291
Manufacturer	Allegro MicroSystems
File Size	422.81 KB
Description	Single LNB Supply and Control Voltage Regulator
Datasheet	A8291 Datasheet
Additional preview pages of the A8291 datasheet.

Product details

Description

Intended for analog and digital satellite receivers, this single low noise block converter regulator (LNBR) is a monolithic linear and switching voltage regulator, specifically designed to provide the power and the interface signals to an LNB down converter via coaxial cable.

Features

2-wire serial I2C™ -compatible interface: control (write) and status (read).
LNB voltages (16 programmable levels) compatible with all common standards.
Tracking switch-mode power converter for lowest dissipation.
Integrated converter switches and current sensing.
Provides up to 500 mA load current.
Static current limit circuit allows full current at startup and 13→18 V output transition; reliably starts wide load range.
Push-pull output stage minimizes 13→18.

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Published: Mar 13, 2007 |