MEAN WELL N7805-2CW DC/DC Converter 5V 2A 10W Non-Isolated Buck Module

When a project needs a stable 5V rail from a higher, fluctuating DC source, this compact converter steps the voltage down efficiently without the bulk of an isolated supply. The MEAN WELL N7805-2CW is a non-isolated DC/DC buck converter that turns a 7–36 VDC input into a regulated 5 VDC output at up to 2 A, delivering 10 W of power in a tiny SIP3 package.

Who is it for

Engineers and makers integrating point-of-load regulation on PCBs, industrial control boards, or battery-powered devices. Its pin compatibility with the classic LM78xx linear regulator family makes it a drop-in upgrade where heat and efficiency matter.

Main features

• Wide 7–36 VDC input range covers 12V, 24V, and intermediate bus voltages.
• Non-isolated buck topology with up to 96% efficiency, far less heat than a linear regulator.
• Output 5 VDC ±2%, 2 A continuous, 10 W maximum.
• Built-in protection: short circuit, overload, over temperature.
• Through-hole SIP3 package, pin-compatible with LM78xx series.
• Operating temperature from -40°C to +85°C for harsh environments.

Specifications

• Product type: DC/DC converter
• Converter type: Non-isolated step-down (buck)
• Input voltage: 7–36 VDC
• Output voltage: 5 VDC
• Output current: 2 A
• Output power: 10 W
• Efficiency: up to 96%
• Ripple & noise: 50 mVp-p max
• Line regulation: ±0.5%
• Load regulation: ±1%
• Switching frequency: 300 kHz
• Mounting type: through-hole
• Package: SIP3
• Operating temperature: -40°C to +85°C

Tips

Add a low-ESR electrolytic capacitor (e.g., 100 µF) at the input and output close to the pins to reduce ripple and ensure stability. For high ambient temperatures, provide adequate airflow or derate the load.