Texas Instruments TPS54361

Description

The TPS54361 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/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 is available in an 10-pin 4mm x 4mm SON package.

Features

• High Efficiency at Light Loads with Pulse Skipping Eco-mode
• 87-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 SON with Thermal Pad Package
• –40°C to 150°C TJOperating Range
• Supported by WEBENCH Software Tool

Typical applications

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

More information

• Datasheet
• IC product information