3A DC – DC Step Down Buck Converter With Voltmeter LM2596

Key Features:
Input Voltage: 4.0V to 40V DC
Output Voltage: 1.25V to 37V DC (adjustable via potentiometer)
Output Current: Max 3A (recommended ≤ 2A for long-term use without heatsink)
Conversion Efficiency: Up to 92% Switching Frequency: 150 kHz
Voltage Display: Digital voltmeter (can show input or output voltage)
Display Range: 0–40V with ±0.1V accuracy
Output Ripple: <30mV (typically)

Display Functionality:

Built-in digital voltmeter with a push button to switch between input and output voltage display.
Red LED display for voltage readings.