The LTC3873ETS8-5TRM#PBF from Analog Devices is a Synchronous Step-Down Switching Regulator. This regulator has a 3-phase architecture, allowing it to operate at high frequencies up to 5MHz, making it suitable for high current applications. The device features pulse-by-pulse current limit, Soft-Start, adjustable output voltage, internal compensation, and a wide operating voltage range (4.5V to 38V). It has an integrated low-side MOSFET and high-side MDmesh™ MOSFETs, and uses a unique clockless PWM controller. The package includes an 8-lead thermally enhanced exposed pad (TEP) TSOT-23 package. This regulator is optimized for applications with highly variable loading and/or low dropout conditions, and is ideal for automotive, industrial, and other applications that require system-level efficiency.