RT5047A
Single Output LNB Supply and Control Voltage Regulator
General Description
The RT5047A is a highly integrated ...
RT5047A
Single Output LNB Supply and Control Voltage
Regulator
General Description
The RT5047A 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 RT5047A has fault protection (over-current, over-temperature and under-voltage lockout).
The RT5047A are available in a SOP-8 (Exposed Pad) package to achieve optimized solution for thermal dissipation.
Ordering Information
RT5047A
Package Type SP : SOP-8 (Exposed Pad-Option 2)
Lead Plating System G : Green (Halogen Free and Pb Free)
Note : Richtek products are :
RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
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) 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
Applications
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