Product Overview
TPS65233RTER Texas Instruments is a monolithic voltage regulator with I2C interface, specifically to provide the 13-V/18-V power supply and the 22-kHz tone signaling to the LNB downconverter in the antenna dish or to the multi-switch box. It offers a complete solution with very low component count, low power dissipation together with simple design and I2C standard interfacing. TPS65233 features high power efficiency. The boost converter integrates a 120-mΩ power MOSFET running at 500-kHz switching frequency because the drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65233 provides multiple ways to generate the 22-kHz signal but Integrated linear regulator with push-pull output stage generates clean 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear regulator can be programmed by external resistor with ±10% accuracy but full range of diagnostic read by I2C is available for system monitoring.
Features of TPS65233RTER Texas Instruments
- Complete Integration Solution for LNB and I2C
- DiSEqC 1.x Compatible
- Supports 5-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
Applications
- Set Top Box Satellite Receiver
- TV Satellite Receiver
- PC Card Satellite Receiver
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