Key facts
- Brand
- STMicroelectronics
- Model
- LNBH23L
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics LNBH23L LNB Supply and Control IC Datasheet
The LNBH23L is a monolithic voltage regulator and interface IC designed for analog and digital satellite receivers. It provides a complete solution for powering LNB down-converters and multi-switch boxes by generating 13V or 18V power supplies and 22kHz tone signaling. The device integrates a DC-DC step-up converter for efficient single 12V supply operation and includes an I2C interface for full control and diagnostics.
Read onlineSTMicroelectronics LNBH23L specifications
| Supply Voltage Range | 8 V to 15 V |
|---|---|
| Output Voltage Options | 13 V or 18 V |
| Efficiency | typ. 93% @ 0.5 A |
| Package Type | QFN32 (5 x 5 mm) |
| Over-temperature Shutdown Threshold | 150 °C |
| Over-temperature Reset Threshold | 135 °C |
| ESD Tolerance | +4kV |
Source: STMicroelectronics LNBH23L LNB Supply and Control IC Datasheet
All STMicroelectronics LNBH23L documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the typical efficiency of the LNBH23L at 0.5A load?
The typical efficiency is 93% at a 0.5A load.
From: STMicroelectronics LNBH23L LNB Supply and Control IC Datasheet
Can the output voltage be selected via I2C?
Yes, the output can be logic controlled to be 13 or 18 V by means of the VSEL bit.
From: STMicroelectronics LNBH23L LNB Supply and Control IC Datasheet
Does the board require external components?
No, it minimizes the number of external components required by being a simple and inexpensive integrated solution.
What protection features are included?
The board includes internal overload, over-temperature protection, and dynamic LNB short-circuit protection.
What is the function of the EXTM pin?
The EXTM pin is an analog input used to generate the 22 kHz tone superimposed to the VoRX DC output voltage.
How is the I2C address selected?
The I2C address is selected by setting the voltage level of the dedicated ADDR pin.