Allegro MicroSystems Inc. Special Purpose Regulators A8302SETTR-T

The A8302SETTR-T is a dual-channel low-noise block converter regulator designed for satellite TV receiver systems. It integrates a boost MOSFET, current sensing, and compensation circuitry, requiring minimal external components. The device features programmable switching frequencies of 563 kHz and 939 kHz, and an adjustable LNB output current limit ranging from 250 mA to 950 mA, allowing for flexibility in various applications. The A8302SETTR-T includes a sleep mode for power savings, an internal tone generator for DiSEqC,Ñ¢ communication, and diagnostic features such as Early Power Failure (EPF) warnings. It supports a 2-wire I¬=C,Ñ¢ interface for configuration and monitoring, and offers extensive protection features including undervoltage lockout, thermal shutdown, and overcurrent protection. The product is housed in a compact 32-contact QFN package measuring 5 mm x 5 mm x 0.90 mm, making it suitable for space-constrained designs.