Packaging information
| Package | Pins WQFN (RTE) | 16 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the 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
Description for the TPS65233
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.