• High Efficiency at Light Loads With Pulse-Skipping Eco-Mode™
• 89-mΩ High-Side MOSFET
• 152-μA Operating Quiescent Current and 2-μA Shutdown Current
• 100-kHz to 2.5-MHz Adjustable Switching Frequency
• Synchronizes to External Clock
• Low Dropout at Light Loads With Integrated BOOT Recharge FET
• Adjustable UVLO Voltage and Hysteresis
• UV and OV Power Good Output
• Adjustable Soft Start and Sequencing
• 0.8-V 1% Internal Voltage Reference
• 10-Pin WSON With Thermal Pad Package
• –40°C to 150°C TJ Operating Range
• Supported by WEBENCH® Software Tool

• Industrial Automation and Motor Control
• Vehicle Accessories: GPS (see SLVA412), Entertainment
• USB Dedicated Charging Ports and Battery Chargers (see SLVA464)
• 12-V, 24-V, and 48-V Industrial, Automotive, and Communications Power Systems

The TPS54361 device is a 60-V, 3.5-A, step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 65 V per ISO 7637. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load supply current to 152 μA. Shutdown supply current is reduced to 2 μA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor-divider at the enable pin. The output voltage startup ramp is controlled by the soft-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage.

A wide adjustable switching frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protects internal and external components during an overload condition.

The TPS54361 device is available in a 10-pin 4-mm × 4-mm WSON package.