Overview
The TPS65233-1RTET, produced by Texas Instruments, is a monolithic voltage regulator designed specifically for analog and digital satellite receivers. This IC provides the necessary 13-V/18-V power supply and 22-kHz tone signaling to the Low Noise Block (LNB) down-converter in the antenna dish or to the multi-switch box. It offers a complete integration solution with a low component count, low power dissipation, and simple design using I2C standard interfacing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 16-pin WQFN (3.00-mm × 3.00-mm) | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Input Voltage Range | 4.5 V to 20 V | V |
| Output Voltage | 13.4 V, 18.6 V | V |
| Output Current Limit | Up to 1000 mA (adjustable by external resistor and I2C) | mA |
| Switching Frequency | 1 MHz | Hz |
| Drop Out Voltage at Linear Regulator | 0.8 V | V |
| Power MOSFET Rdson | 120 mΩ | Ω |
| I2C Interface | Standard mode (100 kbps), Fast mode (400 kbps) |
Key Features
- Complete integration solution for LNB and multi-switch box applications
- DiSEqC 1.x compatible
- Supports 9-V and 12-V power bus
- Boost converter with low Rdson internal power switch
- Dedicated enable pin for non-I2C applications
- 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
- LNB short circuit dynamic protection and diagnostics for output voltage level, input supply UVLO, and DiSEqC tone output
- Cable disconnect diagnostic
Applications
The TPS65233-1RTET is primarily used in satellite receiver systems, including:
- Analog and digital satellite receivers
- LNB down-converter in antenna dishes
- Multi-switch box designs
- Satellite set-top box designs
Q & A
- What is the primary function of the TPS65233-1RTET?
The TPS65233-1RTET is designed to provide the necessary 13-V/18-V power supply and 22-kHz tone signaling to the LNB down-converter in satellite receiver systems.
- What package type is the TPS65233-1RTET available in?
The TPS65233-1RTET is available in a 16-pin WQFN (3.00-mm × 3.00-mm) package.
- What is the operating temperature range of the TPS65233-1RTET?
The operating temperature range is -40°C to 85°C.
- How is the output current limit adjusted on the TPS65233-1RTET?
The output current limit can be adjusted by an external resistor and through the I2C interface.
- What is the switching frequency of the boost converter in the TPS65233-1RTET?
The switching frequency is 1 MHz.
- Does the TPS65233-1RTET support I2C interface?
Yes, it supports I2C interface in standard mode (100 kbps) and fast mode (400 kbps).
- What kind of protection features does the TPS65233-1RTET have?
The IC includes LNB short circuit dynamic protection, diagnostics for output voltage level, input supply UVLO, and DiSEqC tone output.
- Can the TPS65233-1RTET generate the 22-kHz tone signal externally?
Yes, the 22-kHz tone signal can be generated internally or through an external pin.
- What is the purpose of the dedicated enable pin on the TPS65233-1RTET?
The dedicated enable pin is for non-I2C applications.
- Is the TPS65233-1RTET compliant with DiSEqC standards?
Yes, it is compliant with DiSEqC 1.x standards.
