Connection Guide
Connect IN to input and OUT to output. Ensure correct polarity according to the markings on the board! After connection, turn the potentiometer counterclockwise to decrease voltage, requiring 10+ full rotations initially.
Model/Name：LM2596S DC-DC Step-Down Module
Input Voltage：3.2V~35V
Output Voltage：1.25V~35V
Output Current：3A (Max)
Conversion Efficiency：92% (Peak)
Output Ripple：
Switching Frequency：65KHz
Operating Temperature：-45℃~+85℃
Dimensions：43mm×21mm×14mm (L×W×H)
Warnings:
IN+: Input positive | IN-: Input negative
OUT+: Output positive | OUT-: Output negative
Never reverse input/output connections – May cause burnout!
Input: DC 3V–35V (Input voltage must exceed output voltage by ≥1.5V（No boost capability)
Output: Adjustable DC 1.5V–35V, max 3A current at high efficiency
Features:
Full SANYO solid capacitors
36u thickened PCB
High-Q power inductor
Output LED indicator
Usage Notes:
For prolonged operation, use below 2.5A (add heatsink for >2A or >10W output)
Maintain ≥1.5V voltage difference between input and output for stability
Connection Methods:
Direct Soldering: Attach wires to input/output terminals
Pin Headers: Install headers for breadboard/PCB integration
Application Examples:
Car Voltage Stabilization: Connect to cigarette lighter socket, adjust potentiometer (1.25V–30V output) for charging phones/MP3/PSP devices
Custom Power Supply: Convert 3V–35V input to required voltage for electronics lacking dedicated power sources
System Voltage Testing: Debug voltage ranges during R&D projects