GUI for evaluation module (EVM)
Data sheet
TPS65233
- 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 - Compliant with main satellite receiver systems
Specifications - LNB Short Circuit Dynamic Pprotection
- Diagnostics for Output Voltage Level,
Input Supply UVLO, and DiSEqC Tone Output - Cable Disconnect Diagnostic
- Available in a 16-Pin QFN 3-mm × 3-mm (RTE) Package
Designed for analog and digital satellite receivers, the TPS65233 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 features high power efficiency. The boost converter integrates a 120-mΩ power MOSFET running at 500-kHz switching frequency. 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. 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 QFN 3-mm × 3-mm (RTE) package.
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Technical documentation
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View all 3 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LNB Voltage Regulator With I2C Interface datasheet (Rev. A) | 24 Sep 2013 | |
| Application note | LNB design considerations on TPS65233, TPS65235 | 25 Sep 2017 | ||
| EVM User's guide | LNB Voltage Regulator With I2C Interface EVM | 12 Jul 2013 |
Design & development
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Evaluation board
TPS65233EVM — TPS65233 LNB Voltage Regulator with I2C Interface Evaluation Module
The Texas Instruments TPS65233EVM evaluation module (EVM) helps designers evaluate the performance of the TPS65233 LNB Voltage Regulator with I2C Interface. Designed for analog and digital satellite receivers, the TPS65233 is a monolithic voltage regulator. It includes an I2C interface to provide (...)
User guide: PDF
| Package | Pins | Download |
|---|---|---|
| WQFN (RTE) | 16 | View options |
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