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The RT5047BF 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 RT5047BF has protection (over-current, over-temperature and under-voltage lockout).

The RT5047BF is available in a SOP-8 (Exposed Pad) package to achieve optimized solution for thermal dissipation.

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  • Wide Input Supply Voltage Range : 8V to 16V
  • Output Current Limit of 550mA with 6ms timer
  • Low Noise LNB Output Voltage (13.3V and 18.3V by SEL Pin)
  • ±3% High Accuracy for 0mA to 500mA Current Output
  • Push-Pull Output Stage Minimizes Output Transition Time
  • External 22kHz Tone Input
  • Meet DiSEqCTM1.x Protocol
  • Output Short Circuit Protection
  • Over-Temperature Protection
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LNB Power Supply and Control for Satellite Set-Top Box<br />Analog and Digital Satellite Receivers/Satellite TV, Satellite PC cards
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Keyword 1

Keyword 2

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