TPS5430DDAR 500KHZ 3A Buck Switching Regulator IC SOP8

Description

Product Title

TPS5430DDAR 3A Buck Switching Regulator IC – 500kHz Step-Down Converter (SOP-8 PowerPAD)

Short Professional Overview

The TPS5430DDAR is a high-efficiency 3A step-down (buck) switching regulator from Texas Instruments. It integrates a low-resistance power MOSFET and operates at a fixed 500kHz switching frequency, reducing external component size while maintaining excellent efficiency.

With a wide input voltage range of 5.5V to 36V, the TPS5430 is widely used in industrial, automotive, embedded, and power supply applications requiring efficient DC-DC conversion.

Key Features

• Wide input voltage range: 5.5V to 36V
• Up to 3A continuous output current
• Fixed 500kHz switching frequency
• Adjustable output voltage
• Integrated high-side MOSFET
• Efficiency up to 95%
• Internal compensation reduces external component count
• Built-in soft-start function
• Overcurrent protection
• Thermal shutdown protection
• SOP-8 PowerPAD package

Technical Specifications

Device Information

• Part Number: TPS5430DDAR
• Manufacturer: Texas Instruments
• Function: Step-Down (Buck) Converter
• Package: SOP-8 PowerPAD (DDA)

Electrical Characteristics

• Input Voltage Range: 5.5V to 36V
• Output Current: Up to 3A Continuous
• Peak Output Current: Up to 4A
• Switching Frequency: 500kHz
• Output Voltage Range: Adjustable
• Reference Voltage: 1.221V
• Efficiency: Up to 95%

Protection Features

• Cycle-by-cycle overcurrent limiting
• Thermal shutdown
• Undervoltage lockout (UVLO)
• Overvoltage protection
• Soft-start control

Operating Temperature

• Junction Temperature Range: -40°C to +125°C

Power & Programming

• No programming required
• Requires external:
  • Inductor
  • Schottky diode
  • Input capacitor
  • Output capacitor
  • Feedback resistors
• Suitable for generating common rails such as:
  • 12V → 5V
  • 24V → 5V
  • 24V → 3.3V
  • Automotive and industrial DC power conversion

Applications

• Industrial control systems
• Embedded electronics
• Automotive electronics
• Battery-powered equipment
• DC-DC power supplies
• LED power systems
• Communication equipment
• Microcontroller and FPGA power rails
• IoT and automation devices

What’s Included

• 1x TPS5430DDAR Buck Switching Regulator IC (SOP-8)

Notes

• Surface-mount SOP-8 PowerPAD package requiring SMD soldering.
• Proper PCB layout is essential for optimal thermal performance and EMI control.
• Input and output capacitors should be placed close to the IC according to the datasheet recommendations.
• Not a synchronous buck regulator; an external catch diode is required.