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RT5047 - Single Output LNB Supply and Control Voltage Regulator

Description

The RT5047 is a highly integrated voltage regulator and interface IC, specifically design for supplying power and control signals from advanced satellite set-top box (STB) modules to the LNB down-converter in the antenna dish or to the multi-switch box.

Features

  • Wide Input Supply Voltage Range : 8V to 16V.
  • Output Current Limit of 550mA with 45ms timer.
  • Low Noise LNB Output Voltage (13.3V and 18.3V by SEL Pin, 14.3V and 19.3V by COMP Pin).
  • 3% High Accuracy for 0mA to 500mA Current Output.
  • Push-Pull Output Stage minimizes 13.3V to 18.3V and 18.3V to 13.3V Output Transition Time.
  • External 22kHz Tone Input.
  • Meet DiSEqCTM1.x Protocol.
  • Output Short Circuit Protection.
  • Over-Temperature Protection.

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Datasheet preview – RT5047

Datasheet Details

Part number RT5047
Manufacturer Richtek
File Size 1.04 MB
Description Single Output LNB Supply and Control Voltage Regulator
Datasheet download datasheet RT5047 Datasheet
Additional preview pages of the RT5047 datasheet.

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Full PDF Text Transcription

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RT5047 Single Output LNB Supply and Control Voltage Regulator General Description The RT5047 is a highly integrated voltage regulator and interface IC, specifically design for supplying power and control signals from advanced satellite set-top box (STB) modules to the LNB down-converter in the antenna dish or to the multi-switch box. The device is consists of the independent current-mode boost controller and low dropout linear regulator along with the circuitry required for 22kHz tone shaping to support DiSEqCTM1.x communications. The RT5047 has fault protection (over-current, over-temperature and under-voltage lockout). The RT5047 are available in a SOP-8 (Exposed Pad) package to achieve optimized solution for thermal dissipation.
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