The LM2577 3A DC-DC Step UP LED Voltmeter 3-34V to 4-35V Adjustable Boost Converter module is a 150 KHz fixed frequency PWM buck (step-down) DC/DC module. Requiring a minimum number of external components, these regulators are cost-effective, and simple to use.

This version of LM2577 DC-DC step-up (boost) power supply module includes the very useful addition of an integrated digital voltage meter.

Together with its high precision multi-turn potentiometer, this means any desired output voltage within its supply range can be set without the need for an external voltage meter. The module also boasts a very high operating range with a DC input supply range of 3-34V and an adjustable output range of 4-35V.

Features :

1. Multiple output regulator.
2. One button to switch input and output voltage display.
3. Power-down memory function.
4. Press the button for 3 seconds can turn OFF/ON the LED display.
5. With wiring terminal.
6. When adjusting the blue potentiometer, please use a multimeter to monitor the voltage
7. Rotating Clockwise can raise the voltage while rotating counterclockwise could lower the voltage
8. When the module output voltage cannot be adjusted (the output voltage is always equal to the input voltage )Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.

Package Includes:

1 x LM2577 3A DC-DC Step UP Voltmeter.

Specifications:

Input Voltage (V)	3 to 34
Output Voltage(V)	4 ~ 35
Max. Output Current (A)	3
Voltmeter Range(V)	0 to 40
Switching Frequency(KHz)	52
Operating Temperature(°C)	-40 to 90
Length (mm)	60
Width (mm)	35
Height (mm)	13.5
Weight (gm)	24