LM2596S/DC-DC Step-Down Power Module 3A Adjustable Step-Down Voltage Regulator/Superior to LM2576

Description This module utilizes high-quality LM2596 chips, boasting high efficiency (up to 92%), low heat generation, and the ability to easily handle currents exceeding 3A (short-term). For long-term operation, it is recommended to use currents within 2.5A, with additional heatsinks for outputs above 10w. The module employs machine-mounted components and reflow soldering. Each module undergoes a two-hour burn-in test before shipment to ensure high reliability. Product Basic Parameters: Nature: Non-isolated buck converter Rectification Method: Non-synchronous rectification Input Voltage: 3.2V-40V Output Voltage: 1.25V-35V Output Current: 3A (max) Conversion Efficiency: 92% (max) Switching Frequency: 150KHz Output Ripple: 30mV (max) Load Regulation: ±0.5% Line Regulation: ±2.5% Operating Temperature: -40°C to 85°C Dimensions: 432114 (LWH) mm Input Voltage Range: DC 3.2V-40V (input voltage must be at least 1.5V higher than the desired output voltage; cannot boost voltage) Output Voltage Range: DC 1.25V-35V continuously adjustable, high efficiency (up to 92%), max output current of 3A. Application Scenarios: Vehicle-Mounted Voltage Stabilizer: Simply connect the module’s input to the car cigarette lighter socket to adjust the potentiometer and output voltage between 1.25-30V, easily powering devices such as phones, MP3s, MP4s, PSPs, etc. Power Supply for Electronic Devices: When devices require 3-30V and you have a corresponding voltage power supply, use this module to conveniently adjust the voltage to the required level. System Operating Voltage Testing: During projects, use this module to test various voltage ranges for system operating voltages with ease. Wiring Instructions: Soldering: Directly solder the power cord to the input (output) ports. Pin Soldering: Insert leads into pins or onto perforated boards; alternatively, add leads and directly solder to PCB. Polarity: IN for input positive, IN- for input negative, OUT for output positive, OUT- for output negative. Product Features: Input Voltage Range: DC 3.2V to 40V (input voltage must be at least 1.5V higher than the desired output voltage; cannot boost voltage). Output Voltage Range: DC 1.25V to 35V continuously adjustable, high efficiency (up to 92%), and output current up to 3A. Usage Instructions: Connect the power supply (3.2-40V), and the power indicator light will illuminate, indicating normal module operation. Adjust the blue potentiometer knob (generally clockwise for voltage increase, counterclockwise for voltage decrease) and use a multimeter to monitor the output voltage until it reaches the desired level. Precautions: For long-term operation, it is recommended to use currents within 2.5A, with additional heatsinks for outputs above 10w. To ensure stable output, maintain a minimum voltage difference of 1.5V. This module is adjustable; change the output voltage by adjusting the blue potentiometer on the module. The minimum output voltage is 1.25V with a 2V input-output voltage difference. Ensure correct polarity for IN-(input negative), IN (input positive), OUT-(output negative), OUT (output positive) to avoid damaging the module. This module lacks output short-circuit protection; prolonged short-circuit output may damage the module.