Description

LM2596 3 A Step-Down Voltage Converter

This LM2596-based non-synchronous DC-DC buck converter reduces a higher input voltage to an adjustable lower output. The module’s maximum output current is specified as 3 A; a heatsink is required above 2.5 A. Actual performance depends on the input/output voltage difference, load and cooling.

Specifications

Operating mode: non-synchronous
Input voltage: 4–40 V DC
Adjustable output voltage: 1.3–35 V DC
Maximum output current: 3 A; heatsink required above 2.5 A
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 sensitive equipment. Use appropriate wiring and cooling, and keep input voltage and output current within the stated limits. Datasheet