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LNB Power Supply and Control for Satellite Set-Top Box
LNB Power Supply and Control for Satellite Set-Top Box
Analog and Digital Satellite Receivers/Satellite TV
Satellite PC cards
Wide Input Supply Voltage Range : 8V to 16V
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
Single Output LNB Supply and Control Voltage Regulator
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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