STMicroelectronics LNBH21PD-TR Product Overview

The LNBH21PD-TR from STMicroelectronics is a cutting-edge monolithic voltage regulator and interface IC, specifically designed for supplying and controlling 13/18V polarities and 22kHz tone in satellite set-top box units and satellite dish LNBs (Low Noise Block downconverters). This component is an integral part of the system that enables satellite TV reception, providing the necessary voltages and signals to the LNB, which is mounted on the satellite dish.

Key Features

• Integrated Voltage Regulators: The LNBH21PD-TR is capable of providing selectable output voltages of 13V or 18V, which are essential for switching between different polarization modes of the LNB.
• Tone Generation: It also includes a built-in 22kHz tone generator, used for controlling the local oscillator of the LNB for band switching purposes.
• DiSEqC 2.X Compliant: The device adheres to the DiSEqC 2.X protocol standard, allowing for bidirectional communication between the satellite receiver and the LNB.
• Overcurrent Protection: With its robust overcurrent protection, the LNBH21PD-TR ensures reliable operation by safeguarding the IC and the LNB against potential damage from current overloads.
• Low Power Consumption: The device is designed for efficiency, boasting low power consumption which is crucial for minimizing heat generation and ensuring long-term reliability.
• Thermal Protection: It also features thermal shutdown protection to prevent overheating, further enhancing the durability of the product.

Applications

The LNBH21PD-TR is primarily used in satellite TV systems, where it provides the necessary control voltages and signals to the LNB. It is suitable for single satellite receiver setups and can also be used in multi-switch environments, thanks to its compliance with the DiSEqC protocol.

Package and Availability

Available in a PowerSSO-16 package, the LNBH21PD-TR is designed for surface-mount technology (SMT), allowing for compact and efficient PCB design. Its robust packaging ensures that it can withstand the rigors of mass production and operation in various environmental conditions. STMicroelectronics offers this component in tape and reel packaging, facilitating its integration into automated manufacturing processes.

For designers and engineers looking to incorporate a reliable voltage regulator and interface IC into their satellite TV system designs, the LNBH21PD-TR from STMicroelectronics offers a perfect blend of performance, protection, and power efficiency.