The DC-DC Adjustable Step Down Converter Module features high power, high efficiency, and low ripple. It includes a power indicator and a built-in voltmeter that can self-calibrate. It can measure input and output voltage with an indication and can also be turned off. The board has terminal connectors for easy wiring.

• Built-in heating function
• Built-in current limiting function
• Built-in short circuit protection

Specifications:

• Easily up to 4A 50W, up to 75W with added heatsink
• Input voltage: 4V ~ 38V (not more than 38V)
• Output voltage: 1.25V ~ 36V (adjustable)
• Output current: 0A ~ 5A (recommended up to 4.5A)
• Output power: recommended use under 75W (add heatsink if over 50W)
• Operating temperature: -40°C ~ +85°C
• Operating frequency: 180KHz
• Conversion efficiency: Up to 96%
• Voltmeter range: 0V ~ 40V
• Voltmeter error: ±0.1V (for better accuracy, keep input above 4.5V)
• Load regulation: S (I) ≤0.8%
• Voltage regulation rate: S (u) ≤0.8%
• Power indicator: Yes
• Short circuit protection: Yes (current limiting 8A)
• Overheat protection: Yes
• Input reverse polarity protection: No
• Wiring: IN+/- Input, OUT+/- Output
• Size: 66 x 39 x 18mm

Voltmeter adjustment method:

• The voltmeter shows the output, press and hold the right button for 2 seconds and release it.
• Press the button on the right to add or decrease the voltage unit.
• After adjustment, press and hold the right button for 2 seconds to exit the setting.

The DC-DC Converter is used in applications where the input is greater than the output, such as in batteries, adjustable power supplies, LCD Monitors, and LCD TVs.