Single Output LNB Supply and Control Voltage Regulator


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The RT5047B 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 RT5047B has protection (over-current, over-temperature and under-voltage lockout).

The RT5047B is available in a SOP-8 (Exposed Pad) package to achieve optimized solution for thermal dissipation.


  • LNB Power Supply and Control for Satellite Set-Top Box
  • Analog and Digital Satellite Receivers/Satellite TV, Satellite PC cards
  • LCD TV
TitleLast UpdateShareDownload
Single Output LNB Supply and Control Voltage Regulator2017/12/01
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT5047BGSPPSOP-82500 Request Buy from Distributor