TPS54620 Synchronous Step-Down Converter

Specifications

Product Overview

The TPS54620 is a Texas Instruments synchronous step-down converter classified under Power_Management. It combines control circuitry and integrated high-side and low-side MOSFETs for regulated buck conversion using a VIN recommended operating range of 4.5-17 V and a PVIN power-stage range of 1.6-17 V.

The converter supports 0-6 A output current and an operating junction temperature range of -40 to 150 °C. Its voltage reference is specified at 0.792 V minimum, 0.800 V typical, and 0.808 V maximum across 0 A to 6 A output current, with ±1% voltage reference accuracy over temperature.

Switching frequency is adjustable from 200 kHz to 1.6 MHz, with characterized operating points of 200 kHz typical using a 240 kΩ Rrt and 480 kHz typical using a 100 kΩ Rrt. Protection and control parameters include VIN UVLO, enable thresholds, cycle-by-cycle high-side current limit, low-side sourcing and sinking current limits, reverse current protection, and thermal shutdown.

The package is a 14-pin VQFN with a 3.50 mm x 3.50 mm body. Thermal data includes 40.1 °C/W junction-to-ambient resistance and 1.8 °C/W junction-to-case bottom resistance for RGY or RHL VQFN packages.

Key Features

• 4.5-17 V VIN recommended operating range
• 1.6-17 V PVIN power-stage input range
• 0-6 A recommended output current range
• -40 to 150 °C junction operating range
• 0.800 V typical reference with ±1% accuracy
• 200 kHz to 1.6 MHz adjustable switching frequency
• 26 mΩ typical high-side MOSFET at BOOT-PH = 6 V
• 19 mΩ typical low-side MOSFET at VIN = 12 V
• 2 µA typical shutdown supply current at EN = 0 V
• Cycle-by-cycle high-side current limit, 11 A typical
• 160 °C typical thermal shutdown temperature
• 14-pin 3.50 mm x 3.50 mm VQFN package

Typical Applications

• Synchronous step-down regulator circuits
• 4.5-17 V input rail conversion
• 1.6-17 V power-stage buck designs
• Up to 6 A output supplies
• Adjustable-frequency power supplies
• Compact VQFN power assemblies
• Thermally monitored regulator designs
• Enable-controlled power rails

Procurement Notes

When requesting a quote for TPS54620, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.

If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.

For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.