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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.
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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