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A8293 - Single LNB Supply and Control Voltage Regulator

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 (8 programmable levels) compatible with all common standards including domestic Japan models.
  • Tracking switch-mode power converter for lowest dissipation.
  • Integrated converter switches and current sensing.
  • Provides up to 700 mA load current.
  • Static current limit circuit allows full current at startup and 13→18 V output transition; reliably starts wide load range.
  • P.

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Datasheet Details

Part number A8293
Manufacturer Allegro MicroSystems
File Size 666.69 KB
Description Single LNB Supply and Control Voltage Regulator
Datasheet download datasheet A8293 Datasheet
Additional preview pages of the A8293 datasheet.

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Full PDF Text Transcription

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A8293 Single LNB Supply and Control Voltage Regulator FEATURES AND BENEFITS ▪ 2-wire serial I2C™ -compatible interface: control (write) and status (read) ▪ LNB voltages (8 programmable levels) compatible with all common standards including domestic Japan models ▪ Tracking switch-mode power converter for lowest dissipation ▪ Integrated converter switches and current sensing ▪ Provides up to 700 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 V and 18→13 V output transition times for highly capacitive loads ▪ Adjustable rise/fall time via external timing capacitor ▪ Built-in tone oscillator, factory-trimmed to 22 kHz facilitates DiSEqC™ tone encodin
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