Power Distribution Switches and Load Drivers

Power Distribution Switches and Load Driver ICs are integrated semiconductor switches designed to safely distribute power to various subsystems on a board, protecting upstream power supplies from short circuits, inrush currents, and overcurrent events. These devices combine low-on-resistance (RDSon) N-channel or P-channel power MOSFETs with charge pumps, precision current limiting, and diagnostic outputs on a single chip, serving as smart electronic fuses.

These load switches are widely used to protect USB ports, control accessory power rails in smartphones, and manage distributed power buses in automotive ECUs and servers. Critical specifications focus on operating voltage range, continuous current rating (A), programmable current limit accuracy, on-resistance (milli-ohms), reverse current blocking, and fault flag status outputs (active-low FLT). Automotive variants require AEC-Q100 qualification.

Browse Octatronics to search and compare power distribution switches from premier manufacturers including Texas Instruments, Analog Devices, onsemi, Microchip, and Diodes Incorporated. Filter by current limit, channel count, package, and submit your RFQ online.