Description
LM2596 3 A Step-Down Converter with Voltmeter
This non-synchronous LM2596 DC-DC buck converter provides an adjustable lower output voltage and an onboard voltmeter for monitoring input or output voltage in real time.
Specifications
- Operating mode: non-synchronous
- Input voltage: 4.5–40 V DC
- Adjustable output voltage: 1.25–35 V DC
- Maximum output current: 3 A; heatsink required above 2.5 A
- Voltmeter range: 0–40 V, stated error ±0.1 V
- Maximum stated efficiency: 92%
- Switching frequency: 65 kHz
- Maximum stated output ripple: 30 mV
- Load regulation: ±0.5%
- Voltage regulation: ±2.5%
- Operating temperature: −40 to +85 °C
- Input reverse-polarity protection: yes (as specified by the source)
- Short-circuit protection: yes (as specified by the source)
- Thermal shutdown: integrated
- Dimensions: 43 × 21 × 14 mm
Set and measure the output voltage before connecting a load. Use suitable wiring and cooling, and stay within the specified voltage and current limits. Datasheet









