Introducing our DC-DC Buck Converter: Adjustable, Efficient, delivering 5V at 9A! Empower your projects with precision and power efficiency.

Buck converters are a workhorse in the world of electronics, efficiently stepping down a higher voltage DC input to a lower voltage DC output. Whether you're powering a microcontroller project or building a custom LED driver, a buck converter offers a compact and versatile solution. In this article, we'll guide you through the process of designing and building your own buck converter.

• Input Voltage: 5 to 38 V (See below for regulator's dropout voltage details)
• Output Voltage: Fixed 5 V (±4% accuracy); adjustable with external resistor
• Output Current: Typically 4 A to 8 A continuous
• Protection Features:
  • Integrated reverse-voltage protection
  • Over-current and short-circuit protection
  • Over-temperature shutoff
  • Soft-start
  • Under-voltage lockout
• Efficiency: Typically 80% to 95%, varying with input voltage and load
• Switching Frequency: Automatically adjusted at light loads for high efficiency
• Quiescent Current: 800 µA typical no-load; adjustable down to 10 µA/V on VIN
• Power Good Output: Indicates inability to maintain set output voltage
• Compact Size: 1.6" × 0.8" × 0.3" (40.6 × 20.3 × 7.6 mm)
• Mounting: Four 0.086" holes for #2 or M2 screws
• Connectivity Options: Smaller holes for 0.1" header pins; larger holes for terminal blocks

• EasyEDA Design Files
• MCU Templates
• MCU Flash Tools
• MounRiver Studio
• ch32003fun SDK
• arduino_core_ch32
• arduino-wch32v003
• CH32V003 with PlatformIO
• CH32V003 on openwch
• MuseLab nanoCH32V003
• CH32V003 datasheets
• WCH-Link user manual
• WCH Official Store on AliExpress

This work is licensed under the GNU General Public License v3.0.