LM2596S Buck Converter DC-DC Adjustable Step Down Module 3.2-40V to 1.25-35V 3A with Voltmeter for LED Car Charger

EN: The Classic Step-Down Workhorse! LM2596S Adjustable Buck Converter, wide input range, 3A stable output, with built-in voltage display for clear and easy power adjustment.Key Features & BenefitsEN:Feature: Based on LM2596S Switching Regulator ICAdvantage: Efficiency up to 92%, much higher than linear regulators, with low heat generation.Benefit: Ideal for high-current step-down applications like driving LED strips, charging batteries, with minimal energy loss.Feature: Ultra-Wide Input Voltage Range (3.2V-40V)Advantage: Can be directly connected to 12V/24V car batteries, 19V laptop adapters, solar panels, etc.Benefit: Extremely versatile application scenarios, suitable for automotive electronics to industrial control.Feature: Onboard Digital VoltmeterAdvantage: Real-time, accurate output voltage display with high precision and intuitive reading.Benefit: No need for a multimeter, precise and convenient voltage adjustment, effectively preventing damage to expensive devices due to incorrect voltage settings.Feature: 3A Continuous Output Current CapabilityAdvantage: Provides sufficient power with strong load capacity.Benefit: Can power multiple devices or high-power loads simultaneously, highly practical. Product DescriptionEN: Need to safely and efficiently step down a higher DC voltage to what your device requires? The LM2596S Buck Converter module is a time-tested solution. Its robust design, excellent efficiency, and convenient voltmeter make it a reliable partner for electronics hobbyists, repair technicians, and makers in power management. Important Notes / How to UseEN:⚠️ Input-Output Voltage Relationship Warning: This is a Step-Down (BUCK) Converter. The input voltage must always be at least 1.5V higher than your set output voltage, otherwise, the module will not work properly or output will be unstable.⚠️ Correct Voltage Adjustment (with Voltmeter): 1. Connect input power. 2. Observe the onboard voltmeter display, slowly turn the blue potentiometer until the meter shows your desired target voltage. 3. Turn off input power, connect your load, and finally repower.⚠️ Current & Heat Dissipation Warning: The maximum continuous output current is 3A. When output current continuously exceeds 2A, the chip will get noticeably hot. Adding a heat sink or providing good ventilation is mandatory, otherwise, overheating will cause output current drop or damage.⚠️ Voltmeter Power Note: The onboard voltmeter is usually powered directly by the input source (VIN). It will light up and display the current output voltage setting (may be slightly higher than under load) as long as input power is connected, even with no load. Potentiometer Care: Use an appropriate tool to adjust the potentiometer and avoid excessive force to prevent damage.SpecificationsEN:IC: LM2596S-ADJ (Adjustable)Input Voltage: DC 3.2V - 40V (Recommended 4V-35V)Output Voltage: DC 1.25V - 35V (Adjustable)Output Current: Max 3A (Continuous)Conversion Efficiency: Up to 92%Switching Frequency: 150 KHzVoltmeter: 3-Digit Display (Optional)Adjustment: Precision Multi-turn Potentiomete