The ZLNB102N8 is a low voltage regulator designed and manufactured by Zetex Semiconductors (now Diodes Incorporated). It's specifically designed for LNB (Low Noise Block) power supply applications in satellite receivers. It provides the necessary voltage and current to power the LNB, which amplifies and downconverts the satellite signal for processing by the receiver.

Applications:

• Satellite receivers: Provides power and control signals to the LNB (Low Noise Block) in satellite TV systems.
• Set-top boxes: Used in set-top boxes to power the LNB for satellite signal reception.
• Satellite dishes: Integrated into satellite dish systems to provide power to the LNB.
• LNB power supplies: Designed as a dedicated power supply for LNB applications.

Features:

• Low voltage operation: Operates from a low input voltage, typically 9V to 18V.
• Built-in boost converter: Generates the required LNB supply voltage from the input voltage.
• Selectable output voltage: Allows selection of different output voltages (e.g., 13V, 18V) to control LNB polarization.
• Overcurrent protection: Provides protection against short circuits and overloads.
• Overtemperature protection: Shuts down the regulator in case of excessive temperature.

Benefits:

• Simplified LNB power supply design: Integrates all the necessary functions for LNB power supply into a single chip.
• Improved system reliability: Provides protection against overcurrent and overtemperature conditions.
• Reduced component count: Minimizes the number of external components required.
• Compact solution: Offers a small footprint for space-constrained applications.
• Energy-efficient operation: Designed for low power consumption.

Additional Details:

The ZLNB102N8 features built in over voltage and over temperature protection. It is packaged in a SOIC-8 package. It also includes a built in oscillator and soft start functionality. Control for voltage selection is typically achieved via a digital input. This allows a microprocessor to control LNB polarization. The regulator is optimized for low noise operation, minimizing interference with the satellite signal. The operating temperature range is typically -40°C to +85°C.