Allegro A8296SESTR-T

Конвертер, аналоговые и цифровые спутниковые приемники

Overview

 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 • Integrated boost MOSFET, current sensing, and compensation • Supplies up to 500 mA continuously • Adjustable LNB output current limit from 300 to 500 mA • Boost peak current limit scales with LNB current limit setting • 8 programmable LNB output voltage (DAC) levels • LNB overcurrent limiter with shutdown timer • Tracking boost converter minimizes power dissipation • LNB transition times configurable by external capacitor • Push-pull LNB output stage maintains 13→18 V and 8→13 V transition times, even with highly capacitive loads • Built-in 22 kHz tone oscillator facilitates DiSEqC™ tone encoding, even at no-load • Tone generation does not require additional external components • Diagnostic features: PNG • Extensive protection features: UVLO, OCP, TSD, CPOK • 2-wire I2C-compatible interface

Features

Applications

• Copier/Printer
• Set-Top Box
• DDR Vooo and Vπ Voltage Generation
• PC Dual Power Supply
• Server DDR Power
• Desktop Computer
• Graphics Cards
• Cell Phones
• Wireless Modems
• PCS Phones