ARG81300SESWTR Integrated Circuit Chip with 704 kHz Switching Frequency and 3 x 3 mm QFN Package for Single LNB Supply

The ARG81300SESWTR is a single-channel low-noise block regulator (LNBR) consisting of a monolithic boost converter followed by a low-drop linear regulator. Specifically designed for satellite TV receiver systems, it provides power and interface signals to an LNB down converter via coaxial cable.

This integrated circuit requires minimal external components, with boost switch and compensation circuitry built into the device. Its 704 kHz switching frequency and adjustable output current limit allow for compact passive filtering components. The device comes in a compact 3 x 3 mm QFN package with exposed pad for thermal dissipation, featuring lead-free construction with 100% matte-tin leadframe plating.

• Integrated boost MOSFET, current sensing, and compensation
• Stable with low-profile ceramic boost capacitors
• 704 kHz switching frequency for compact, cost-effective components
• SLEEP pin for ultra-low power consumption mode
• Adjustable LNB output current limit (250-950 mA) with shutdown timer
• Versatile design covering wide application requirements
• Optimized component sizing for space-constrained applications
• Boost peak current limit scales with LNB current limit

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