ACT4751M USB Fast-Charger Power IC Qorvo ACT4751M USB Fast-Charger Power IC is a step-down, voltage-regulator IC for USB Type-C fast-charger applications for rapid in-vehicle charging of phones, tablets, and laptops. This ACT4751M integrates both power and analog functions into a single power IC. The chip operates up to 40V with protection features that withstand up to 48V of load-dump events in demanding automotive environments. The component is fully optimized to minimize size while delivering maximum power conversion efficiency.