DD4012SA DC-DC Step-Down Buck Converter Module Board

The DD4012SA is a high-efficiency DC-DC step-down (buck) converter module designed to provide a stable and adjustable output voltage from a higher input voltage source. It is ideal for powering embedded systems, DIY electronics, battery-powered projects, and industrial applications.

Key Features

• High conversion efficiency up to 95%
• Wide input voltage range
• Adjustable output voltage via onboard potentiometer
• Built-in overcurrent and thermal protection
• Compact design for easy integration
• Stable performance with low ripple output

Technical Specifications

• Model: DD4012SA
• Converter Type: Step-Down (Buck)
• Input Voltage Range: 5V – 40V DC
• Output Voltage Range: 5V,12V
• Output Current:  1A
• Conversion Efficiency: Up to 95%
• Switching Frequency: ~180 kHz
• Output Ripple: ≤ 50mV (typical)
• Load Regulation: ±0.5%
• Voltage Regulation: ±0.5%
• Operating Temperature: -40°C to +85°C
• Cooling Method: Natural air cooling (heatsink recommended for high load)

Protection Features

• Overcurrent Protection
• Thermal Shutdown
• Short Circuit Protection (limited)

Applications

• Power supply for microcontrollers (Arduino, Raspberry Pi, etc.)
• Battery charging systems
• LED drivers
• Automotive electronics
• DIY electronics and prototyping

Package Includes

• 1 × DD4012SA DC-DC Buck Converter Module

Notes

• Ensure proper heat dissipation when operating above 5A
• Always adjust output voltage before connecting sensitive devices
• Input voltage must be higher than desired output voltage