Texas Instruments TPS65235 LNB Voltage Regulator is designed for analog and digital satellite receivers. The TPS65235 is a monolithic voltage regulator with an I2C interface. This interface specifically provides the 13V to 18V power supply and the 22kHz tone signal to the LNB down-converter in the antenna dish or to the multi-switch box. It offers a complete solution with a minimum component count, low power dissipation, together with a simple design and I2C standard interface. The TPS65235 features high power efficiency. The boost converter integrates a 140mΩ power MOSFET running at 1MHz or 500kHz selectable switching frequency. Drop out voltage at the linear regulator is 0.8V to minimize power loss.
