1 Features

1• 4.5-V to 60-V (65-V Abs Max) Input Range

• 3.5-A Continuous Current, 4.5-A Minimum Peak

Inductor Current Limit

• Current Mode Control DC/DC Converter

• 92-mΩ High-Side MOSFET

• High Efficiency at Light Loads with Pulse Skipping

Eco-mode™

• Low Dropout at Light Loads with Integrated BOOT

Recharge FET

• 146-μA Operating Quiescent Current

• 2-μA Shutdown Current

• 100-kHz to 2.5-MHz Fixed Switching Frequency

• Synchronizes to External Clock

• Adjustable UVLO Voltage and Hysteresis

• Internal Soft Start

• Accurate Cycle-by-Cycle Current Limit

• Thermal, Overvoltage, and Frequency Foldback

Protection

• 0.8 V 1% Internal Voltage Reference

• 8-Pin HSOIC with PowerPAD™ Package

• –40°C to 150°C TJ Operating Range

• Create a Custom Design using the TPS54360B

with the WEBENCH® Power Designer

2 Applications

12-V, 24-V and 48-V Industrial and

Communications Power Systems

3 Description

The TPS54360B is a 60-V, 3.5-A, step-down

regulator with an integrated high side MOSFET.

Current mode control provides simple external

compensation and flexible component selection. A

low ripple pulse skip mode reduces the no-load

supply current to 146 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

be increased using the enable pin. The output voltage

start-up ramp is internally controlled to provide a

controlled start-up and eliminate overshoot.

A wide switching-frequency range allows either

efficiency or external component size to be optimized.

Frequency foldback and thermal shutdown protect

internal and external components during an overload

condition.

The TPS54360B is available in an 8-pin thermally

enhanced HSOIC PowerPAD™ package.