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The TPS5420DR is a high-efficiency, 2 A step-down (buck) DC-DC converter from Texas Instruments, designed to provide a compact and reliable power solution for a wide range of applications. It integrates a low-resistance, high-side N-channel MOSFET and operates at a fixed 500 kHz switching frequency, enabling efficient power conversion with minimal external components.

🔧 Key Specifications

• Input Voltage Range: 5.5 V to 36 V

• Output Voltage Range: Adjustable from 1.22 V to 31 V

• Output Current: Up to 2 A continuous (3 A peak)

• Switching Frequency: 500 kHz

• Efficiency: Up to 95%

• Quiescent Current: Typically 3 mA

• Shutdown Current: Typically 18 µA

• Operating Temperature Range: −40°C to +125°C

• Package: 8-pin SOIC (D)

⚙️ Features

• Integrated High-Side MOSFET: 110 mΩ resistance for efficient switching.

• Internal Compensation: Simplifies design by minimizing external components.

• Voltage Feed-Forward: Improves line regulation and transient response.

• Protection Features:

  • Overcurrent limiting

  • Overvoltage protection

  • Thermal shutdown

  • Undervoltage lockout (UVLO)

• Enable Pin (ENA): Allows for shutdown mode to reduce power consumption.

📦 Applications

• Industrial and automotive power supplies

• Distributed power systems

• Battery-powered equipment

• Consumer electronics

• Point-of-load regulators

📚 Additional Resources

• Product Page: Texas Instruments TPS5420

• Datasheet: TPS5420 Datasheet (PDF)

For design assistance, Texas Instruments offers the TPS5420EVM-175 evaluation module, which provides a platform to evaluate the performance of the TPS5420 in a real-world application.

If you need further information on compatible components, design tools, or sourcing options, feel free to ask!