About this part

TPS56339DDCR – 3A Synchronous Buck Converter – Texas Instruments

Optimize power delivery in space-constrained designs with the TPS56339DDCR step-down voltage regulator from Texas Instruments. This compact IC delivers up to 3A output current with exceptional efficiency, ideal for modern electronics requiring stable, adjustable power in industrial, networking, and embedded applications. Order from PCX for guaranteed genuine components and rapid fulfillment.

Key Features

• 3A Continuous Output Current for robust power delivery
• Wide 4.5V–24V Input Range supports multiple power sources
• Adjustable Output (0.8V–16V) via external resistors
• Integrated Synchronous Rectifier for >90% peak efficiency
• 500kHz Switching Frequency enables compact external components
• Industrial Temperature Range: -40°C to +125°C (TJ)
• Ultra-Compact SOT-23-6 Package (1.6mm × 2.9mm)

Technical Specifications

This step-down (buck) regulator features a positive adjustable single output with internal MOSFETs. The fixed-frequency PWM control ensures stable performance across line/load variations. Housed in a space-saving TSOT-23-6 package, it operates at 500kHz with integrated soft-start and over-current protection. The synchronous design minimizes heat dissipation while supporting forced PWM mode.

Typical Applications

• Industrial automation controllers & PLC systems
• Networking switches and routers
• Consumer electronics power subsystems
• FPGA/ASIC point-of-load (POL) regulation
• Battery-powered portable devices

About Texas Instruments

Texas Instruments (TI) is a globally recognized leader in semiconductor innovation, with over 90 years of engineering excellence. Their power management ICs set industry benchmarks for efficiency, thermal performance, and reliability across automotive, industrial, and consumer markets.

TI’s rigorous quality control and extensive validation processes ensure components meet stringent operational demands. As a trusted partner, PCX exclusively supplies authentic TI products with full traceability and technical support.

About DC-DC Switching Regulators

DC-DC switching regulators efficiently convert unregulated input voltage to stable, precise output levels with minimal energy loss. Unlike linear regulators, they use pulse-width modulation (PWM) to achieve superior thermal performance at higher currents, making them essential for modern power systems.

Buck converters like the TPS56339DDCR specifically reduce voltage while increasing available current. Their compact footprint and high efficiency enable advanced electronics in space-constrained applications, from IoT devices to server farms.

Packaging Options

Available in industry-standard Tape & Reel (TR) for automated assembly, Cut Tape (CT) for prototyping, and Digi-Reel® packaging. Specify your requirement during checkout.

Frequently Asked Questions

Q: Does this regulator require external compensation?
A: No – the TPS56339DDCR features internal compensation for simplified design.

Q: Is it suitable for 12V automotive systems?
A: Yes, the 4.5–24V input range covers 12V automotive applications with margin for transients.

Q: What inductor value is recommended?
A: Use 4.7μH inductors for most designs (refer to TI datasheet on PCXCo.com for calculations).

Q: Can it operate in battery-powered devices?
A: Absolutely – the synchronous design and 1.6μA shutdown current maximize battery life.

Q: How do I set the output voltage?
A: Adjust via external resistor divider using the FB pin (formula provided in datasheet).

Q: Does PCX provide design support?
A: Yes – our engineering team offers schematic/layout guidance for TI regulators.

Note: Product images are representational. Refer to datasheets for exact specifications.

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