TPS65233-1RTER Description
Designed for analog and digital satellite receivers, the TPS65233-1RTER is a monolithic voltage regulator with an I2C interface, specifically to provide the 13-V/18-V power supply and the 22-kHz tone signaling to the LNB down-converter in the antenna dish or to the multi-switch box. It offers a complete solution with the meager component count, and low power dissipation together with a simple design and I2C standard interfacing. TPS65233-1RTER features high power efficiency. The boost converter integrates a 120-Qm power MOSFET running at a 1-MHz switching frequency. The linear regulator's drop-out voltage is 0.8 V to minimize power loss. TPS65233-1RTER provides multiple ways to generate the 22-kHz signal.
TPS65233-1RTER Features
Complete Integration Solution for LNB and 2C
DiSEqC 1.x Compatible
Supports 9-V and 12-V Power Bus
Up to 1000-mA Accurate Output Current Limit Adjustable by External Resistor and I2C
Boost Converter With Low Rdson Internal Power Switch
Dedicated Enable Pin for Non-I2C Application
Low Noise, Low Drop Output With Push-Pull Output Stage
Built-In Accurate 22-kHz Tone Generator or External Pin
Adjustable Soft-Start and 13-V/18-V Voltage Transition Time
Compliant With Main Satellite Receiver Systems Specifications
LNB Short Circuit Dynamic Protection
TPS65233-1RTER Applications
Set-Top Box Satellite Receiver
TV Satellite Receiver
PC Card Satellite Receiver
