About this part

TPS56339DDCT – 3A Synchronous Buck Converter – Texas Instruments

The TPS56339DDCT from Texas Instruments is a high-efficiency synchronous buck converter designed to deliver 3A of continuous output current with exceptional thermal performance. Ideal for space-constrained designs, this voltage regulator simplifies power management with its integrated MOSFETs and wide 4.5V–24V input range. PCX supplies this active-status component with guaranteed authenticity and same-day shipping.

Key Features

• Output Current: 3A continuous load capability
• Input Voltage: Wide 4.5V to 24V operating range
• Output Voltage: Adjustable from 0.8V to 16V
• Topology: Synchronous buck (step-down) with 90%+ typical efficiency
• Switching Frequency: Fixed 500kHz for compact filtering
• Protections: Thermal shutdown & undervoltage lockout

Technical Specifications

• Function: Step-down DC/DC conversion
• Output Configuration: Positive, single output
• Package: SOT-23-6 Thin (TSOT-23-6), surface-mount
• Operating Temperature: Industrial-grade -40°C to +125°C (TJ)
• Synchronous Rectification: Reduces external components and power loss
• Base Part Number: TPS56339 series

Typical Applications

• Industrial automation control systems
• Network routers and telecom infrastructure
• Consumer electronics power subsystems
• 12V/24V automotive accessory modules
• IoT devices and battery-powered equipment

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 standards 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 TI-authorized supplier, PCX guarantees genuine TPS56339DDCT regulators with full traceability and technical support.

About Switching Voltage Regulators

Switching voltage regulators efficiently convert higher input voltages to lower, stabilized outputs with minimal energy loss. Unlike linear regulators, buck converters like the TPS56339DDCT use pulse-width modulation (PWM) to achieve superior thermal performance at higher currents.

These regulators are essential in modern electronics where space, heat dissipation, and battery life are critical. Their ability to handle wide input ranges makes them ideal for systems with variable power sources, including automotive, industrial, and portable devices.

Packaging Options

Available in industry-standard formats for automated assembly: Tape & Reel (TR), Cut Tape (CT), and Digi-Reel®. Specify your preference when ordering.

Frequently Asked Questions

Q: What is the typical efficiency of this regulator at 12V input/5V output?
A: Under typical 3A load conditions, efficiency exceeds 90% according to the datasheet.

Q: Does this IC require external compensation components?
A: No, the TPS56339DDCT features internal compensation for simplified design.

Q: Is an external MOSFET driver needed?
A: No, integrated 42mΩ/24mΩ MOSFETs eliminate external drivers.

Q: What protection features are included?
A: Built-in thermal shutdown, undervoltage lockout (UVLO), and cycle-by-cycle current limiting.

Q: Can it operate from automotive 12V systems?
A: Yes, the 4.5V-24V input range covers standard automotive electrical systems.

Q: How does a synchronous buck improve performance?
A: Synchronous rectification replaces diode losses with a low-R_DS(on) MOSFET, boosting efficiency by 5-10% versus nonsynchronous designs.

Order Today for Fast Delivery!

Optimize your power design with genuine Texas Instruments components. PCX provides same-day shipping, technical datasheets, and dedicated support for the TPS56339DDCT. Request a quote or order now to ensure project continuity!

Product images are representational. Refer to official datasheet for exact specifications: PCX Hosted Datasheet