LM2596 DC-DC buck step-down adjustable converter with voltmeter

The module is a miniature step-down switching regulated power supply based on the National Semiconductor LM2596 chip. The device is capable of operating in a wide input voltage range of 4-40V, and provides an output voltage of 1.25-35V, only 3V less than the input voltage with high conversion efficiency. The output voltage is controlled using a multi-turn resistor on the device board. The module can be used as a laboratory power supply, a battery charger, a power supply or charger for mobile devices in a car, etc.
The voltage is displayed on the display, with an accuracy of ± 0.1 volts, in the range of 0~40 Volts. The display mode of the input or output voltage on the voltmeter can be selected using the button. For the voltmeter to work correctly, the input voltage must be above 4 V.

Specifications:

• Input voltage: 4.5...40 V
• Output voltage: 1.5...35 V adjustable
• Conversion frequency: 150 kHz
• Efficiency: up to 92%
• Working temperature range: -40 ~ +65C
• Output current: up to 3A
• Output power: up to 10W
• Voltmeter with 3-digit LED display
• Dimensions: 65x35 mm