2PCS LM2596S 3A DC-DC Power Supply Step Down Buck Voltage Inc Display DIY Module

Nominal Voltage Rating (DC): 3V-40V

Mounting Style: Stand Alone

Nominal Current Rating: 2A (maximum 3A)

MPN: LM2596 Voltage Regulator Module

Item Depth: 2.1 cm

Minimum Operating Temperature: -10 °C

Installation Area: Indoor

Brand: Generic

Series: LM2596

Type: Voltage Regulator

Output Voltage Rating (DC): 3V-40V

Inrush Current Rating: 3 A

Maximum Operating Temperature: 55 °C

Country/Region of Manufacture: China

Item Width: 4.4 cm

2PCS LM2596S 3A DC-DC Power Supply Step Down Buck Voltage Converter with digital readout DIY Module.

Parameters:

Input Voltage: DC 3 -40 V

Output Voltage: DC 1.5 - 35 V

Output Current: 3A(MAX) It is recommended to use under 2A (NOTE: When using high power, add a heat sink to the power supply chip)

Load adjust ratio: +/-0.5%

Voltage adjust ratio: +/-2.5%

Transferring efficiency: 92% Max(the higher output voltage, the higher efficiency)

ON/OFF frequency: 150KHz

Output ripple: 200mV

Module feature: buck and non-isolated

Rectification method: non-synchronous rectification

Fuction:

1.Built in over-temperature protection function

2.Built in current limit function

3.Built in output short-circuit protection function

How to use

1.Access the power supply ( 3 -40 V), the power indicator light, the module is working properly.

2.Adjust the blue potentiometer knob (usually clockwise rotation boost, counterclockwise rotation Step-down) and monitor the output voltage with a multimeter to reach the required voltage.

3.A customer reflects the module output voltage can not be adjusted, always equal to the input voltage. When you encounter this problem, please first counterclockwise rotation potentiometer 10 laps above, and then use the module can be normal adjustment of the voltage.

Package includes:

2 Pieces LM2596 Module boards

Note:

This is a buck module. The input voltage must be higher than the output voltage.

The input and output interface can not be reversed.

Keep it under 2.5 A and use the heat sink when working for long hours.

Applications:

This module can be used in fields where the input voltage is higher than the step-down output voltage, such as batteries, power transformers, DIY adjustable power supplies, 24V automotive step-down in the power equipment industry, 12V switch 3.3V, 12V switch 5V, 24V to 5V, 24V Turn 12V, 36V turn 24V and so on.

Parameter:

Product size: 66mm * 36mm* 14mm (length x width x height)

Touch the button to switch the input or output voltage measurement, and there is a light to display the voltage being measured,

And save the settings, and even power off and on again.

The input voltage is 4.5~40V. (The input voltage must be higher than the output voltage by more than 1.5v)

The adjustable output voltage range is 1.25V～37V continuously adjustable. (The input voltage must be higher than the output voltage 1.5V)

· The output current is 3A, and it is recommended to use it within 2.0A. Large current is required to enhance heat dissipation.

· The output power is 20W, 15W, please strengthen the heat dissipation.

· High conversion efficiency, an average of 88% (efficiency is related to input and output voltage, current, and pressure)

· With reverse polarity protection, reverse polarity does not burn

usage:

The on-board voltmeter displays the output voltage. Press and hold the right button for 2 seconds and then release. The voltmeter and the output voltage indicator "OUT" will flash simultaneously, and the output voltage adjustment mode will be entered; for the same reason, when the voltmeter displays the input voltage, long Press the Right button for 2 seconds and then release it, the voltmeter and the input voltage indicator "IN" will flash synchronously, and then enter the input voltage adjustment mode;

Touch the right button to increase the voltage by one unit, and touch the left button to decrease the voltage by one unit; because the voltage is less than the unit value of 0.1V, you need to press 1-5 times to see the 0.1V change of the voltmeter, according to the current display Press the voltage value of, the higher the current display voltage, the fewer the number of presses;

After the voltage is adjusted, press and hold the right button for 2 seconds and then release it to exit the voltage calibration mode, and all parameters are set to be automatically power-off and saved.

·Note: In this way, you only need to adjust and calibrate once to obtain the accurate voltage value in the entire voltage range. This function is designed to meet your requirements and design higher accuracy and ease of use.

notes:

1. When the output voltage of the module cannot be adjusted, the output voltage is always equal to the input voltage. Please adjust the potentiometer counterclockwise for more than 20 turns. (Let the potentiometer lean against your chest and turn counterclockwise to boost).

2. The input voltage must be higher than the output voltage by more than 1.5v

3. Need high current or high power to enhance heat dissipation