DROK LM2596 LED Display Buck Converter Instruction Manual

1. Product Overview

The DROK LM2596 LED Display Buck Converter is a DC-DC step-down module designed to convert a higher input voltage to a lower, adjustable output voltage. It features an integrated LED display for monitoring input voltage, output voltage, and output current, along with buttons for mode selection and output control. This module is suitable for various electronic projects requiring a stable and adjustable power supply.

Key Features:

Input Voltage Range: DC 4.0V-32.0V
Output Voltage Range: DC 1.25V-30.0V (adjustable)
Maximum Output Current: 3A
Continuous Operating Current: 1.5A (total output power within 20W)
Display: LED screen showing input voltage, output voltage, and output current.
Protection: Input reverse connection protection and short circuit protection.

DROK LM2596 Buck Converter with dimensions

Figure 1: DROK LM2596 Buck Converter with key dimensions. The module measures approximately 6.0cm (2.4in) in length, 3.4cm (1.34in) in width, and 1.3cm (0.51in) in height.

2. Setup and Wiring

Proper wiring is essential for the safe and correct operation of the buck converter. Refer to the diagram below for connection points.

Wiring Instructions:

IN+: Connect the positive terminal of your DC input power source.
IN-: Connect the negative terminal of your DC input power source.
OUT+: Connect the positive terminal of your load (device to be powered).
OUT-: Connect the negative terminal of your load.

Important: Ensure the input voltage is at least 2V higher than the desired output voltage for proper step-down conversion.

Wiring diagram for DROK LM2596 Buck Converter

Figure 2: Component descriptions and wiring terminals. The input positive (IN+) and negative (IN-) terminals are on the left, and output positive (OUT+) and negative (OUT-) terminals are on the right.

3. Operation

Adjusting Output Voltage:

The output voltage is adjusted using the potentiometer located on the module. Use a small screwdriver to turn the screw on top of the potentiometer.

Turning the screw clockwise will increase the output voltage.
Turning the screw counter-clockwise will decrease the output voltage.

It is recommended to adjust the voltage while monitoring the output on the LED display or with an external multimeter for precise setting.

Voltage adjustment on DROK LM2596 Buck Converter

Figure 3: Illustration of the potentiometer for voltage adjustment. Turn clockwise to increase voltage, counter-clockwise to decrease.

Display Mode Button (MODE):

Press the "MODE" button to cycle through the displayed values on the LED screen:

Output Voltage
Output Current
Input Voltage

The module will automatically memorize the last selected display mode.

Output ON/OFF Button:

Press the "ON/OFF" button to alternately turn the output voltage on or off. When the output is off, the display will show "OFF". The module will automatically memorize the last switch status.

4. Specifications

Parameter	Value
Brand	DROK
Model Number	180057_2x
Input Voltage Range	DC 4.0V - 32.0V
Output Voltage Range	DC 1.25V - 30.0V (Adjustable)
Maximum Output Current	3A
Continuous Operating Current	1.5A (Total output power within 20W)
Voltage Measurement Accuracy	± (1% + 2 digits)
Current Measurement Accuracy	± 2 digits
Product Dimensions (L x W x H)	6.0 x 3.4 x 1.3 cm (2.3 x 1.3 x 0.5 inches)
Power Source	DC

5. Protection Features

The DROK LM2596 Buck Converter includes built-in protection mechanisms to ensure safe operation and protect connected devices:

Input Reverse Connection Protection: Prevents damage to the module if the input power source polarity is accidentally reversed.
Short Circuit Protection: Safeguards the module and connected load from damage in case of an output short circuit.

6. Maintenance

The DROK LM2596 Buck Converter is designed for reliable operation with minimal maintenance. To ensure longevity and optimal performance:

Keep the module clean and free from dust and debris.
Ensure adequate ventilation, especially when operating at higher currents, to prevent overheating.
Avoid exposing the module to moisture or extreme temperatures.
Regularly check wiring connections to ensure they are secure and free from corrosion.

7. Troubleshooting

Problem	Possible Cause	Solution
No display or output power.	Input power not connected or incorrect polarity. Output turned off by "ON/OFF" button. Short circuit at output.	Verify input power connections (IN+, IN-) and polarity. Press the "ON/OFF" button to enable output. Check for short circuits at the output terminals or connected load.
Output voltage is unstable or incorrect.	Input voltage is too low (less than 2V above desired output). Potentiometer not adjusted correctly. Loose wiring connections. Overload condition (current exceeds 1.5A continuous or 3A peak).	Ensure input voltage meets requirements. Carefully adjust the potentiometer while monitoring output. Secure all wiring connections. Reduce the load or ensure it is within the module's current limits.
Module gets excessively hot.	Operating at high current for extended periods. Insufficient ventilation.	Ensure the continuous operating current does not exceed 1.5A (20W total output power). Provide adequate airflow around the module. Consider a heatsink if operating near maximum limits.

8. Warranty Information

This DROK LM2596 LED Display Buck Converter is covered by a 1-Year Manufacturer Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or improper installation.

Please retain your proof of purchase for warranty claims.

9. Customer Support

For technical assistance, troubleshooting, or warranty inquiries, please contact DROK customer support through the official DROK store on Amazon or their official website. When contacting support, please provide your product model number (180057_2x) and a detailed description of the issue.

DROK Store Link: Visit the DROK Store

DROK 180057_2x