Designed for analog and digital satellite receivers, the TPS65233-1 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 down-converter 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.
TPS65233-1 features high power efficiency. The boost
converter integrates a 120-mΩ power MOSFET running at 1-MHz switching
frequency. Drop out voltage at the linear regulator is 0.8
V to minimize power loss. TPS65233-1 provides multiple ways to
generate the 22-kHz signal. 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.
Full range of diagnostic read
by I2C is available for system monitoring.
The part is available in a 16-pin WQFN 3.00-mm × 3.00-mm (RTE) package.
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