NPS7601 Compact, Low-IQ Load Switch

The Nexperia NPS7601 is a compact, single-channel, regulated forward-drop load switch with always-on, true reverse-current blocking capabilities. It provides efficient switching between power rails, minimizing power loss and enabling precise load control. The NPS7601 is offered in a compact WLCSP4 (SOT8113) package and is qualified for operation over an ambient temperature range of -40°C to +125°C.

The NPS7601 operates across an input voltage range of 1.5 V to 5.5 V and supports up to 1.5 A of continuous current. An active high-enable (EN) input controls its operation, allowing for isolation of the load by blocking current in both directions when the pin is held low. When EN is asserted high and the input voltage exceeds the output, the NPS7601 turns on in a controlled manner, managing inrush current to prevent voltage droop on the power source.

To achieve fast-acting, true reverse-current blocking with minimal transient reverse-current, the NPS7601 utilizes a regulated forward voltage scheme. This active control method overcomes the limitations of common IN-to-OUT voltage comparator-based solutions that often require hundreds of milliamps before activation.