LNBH23QTR

Special Purpose Regulators Overview

The LNBH23QTR is a monolithic voltage regulator and interface IC designed for analog and digital satellite receivers. It provides the 13 V or 18 V power supply and 22 kHz tone signaling to the LNB down-converter in the antenna dish. The device features a built-in DC-DC converter for single 12 V supply operation with high efficiency, selectable output current limit by external resistor, and auxiliary modulation input for DiSEqC encoding. It includes low-drop post regulator, overload and over-temperature protections, and ±4 kV ESD tolerance on output power pins.

Special Purpose Regulators Feature Summary

• Complete interface between LNB and I²C bus
• Built-in DC-DC converter for single 12 V supply operation
• Accurate built-in 22 kHz tone generator
• Auxiliary modulation input facilitates DiSEqC encoding

Special Purpose Regulators Applications

• Analog satellite receivers
• Digital satellite receivers
• LNB down-converter power supply
• Antenna dish control systems

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'QTR' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the target satellite receiver's I²C bus requirements and DiSEqC standards. Confirm that the industrial grade and ECOPACK2 compliance meet project constraints. Cross-reference the pinout and electrical parameters with the latest datasheet version before integration.

Special Purpose Regulators Selection Notes

Select this component when designing satellite receiver systems requiring integrated LNB power regulation and control. It is suitable for applications needing a single 12 V input with high efficiency conversion. Consider its DiSEqC support and 22 kHz tone generation capabilities for standard satellite signal processing. Evaluate the thermal protection and ESD tolerance for robust outdoor or harsh environment deployments.

Special Purpose Regulators Part Context

The LNBH23 series belongs to STMicroelectronics' portfolio of specialized interface and power management ICs for satellite communication equipment. These components streamline the design of LNB control circuits by integrating power regulation, tone generation, and bus interfacing into a single QFN package. This integration reduces component count and board space compared to discrete solutions.

Special Purpose Regulators Replacement Considerations

Consult official STMicroelectronics documentation for confirmed substitute part numbers. Verify functional equivalence regarding voltage levels, current limits, and interface protocols before substitution.