RT5047 Overview
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.
Key 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
