RT5070

RT5070 Single Output LNB Supply and Control Voltage Regulator General Description The RT5070 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 for the LNB power. The RT5070 has fault protection (over-current, over-temperature and under-voltage lockout). The RT5070 are available in a SOP-8 (Exposed Pad) package to achieve optimized solution for thermal dissipation. Ordering Information RT5070 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  Output Short Circuit Protection  Over-Temperature Protection Applications  LNB Power Supply and Control for Satellite Set-Top Box  Analog and Digital Satellite Receivers/ Satellite TV, Satellite PC cards P...