3A 5A 10A 20A DC-DC Buck Converter Step Down Module Power Supply Output Constant Current LED Driver Voltage Regulator Module 3A 5A 10A 20A DC-DC Buck Converter Step Down Module Power Supply Output Constant Current LED Driver Voltage Regulator Module Wiring: IN+ input positive IN- input negative OUT+ output positive OUT- output negative 1. Input voltage range: DC 3.2V to 40V (The input voltage must be 1.5V higher than the output voltage. It cannot be boosted) Features: 2. Output voltage range: DC 1.25V to 35V continuously adjustable voltage, high efficiency (up to 92%) output current up to 3A. Module usage method: 1. Connect the power supply (3-40V), the power indicator light is on, and the module works normally. 2. Adjust the blue potentiometer knob (usually turn clockwise to boost, counterclockwise to buck) and use a multimeter to monitor the output voltage until it reaches the required voltage. Note: For long-term work, it is recommended to use the current within 2.5A, and add a heat sink (output above 10W); because it is a step-down module, in order to ensure stable output, please keep a small 1.5V voltage difference. Applications: 1. Vehicle-mounted stabilized power supply, you only need to connect the input terminal of this module to the car cigarette lighter to supply power, you can adjust the potentiometer, and the output voltage can be adjusted at 1.25-30V, charging your mobile phone, MP3, MP4, PSP, etc. Many devices are powered, very simple and convenient. 2. Supply power to the electronic equipment. When the equipment needs 3-35V power supply and the corresponding voltage power supply in the hand, this module can be used to conveniently adjust the voltage to the required voltage to solve the problem. 3. System working voltage test. This module can be used to debug various voltage test system working voltage ranges when doing projects, which is very easy and convenient. Feature: Input voltage: 4-38V (please try not to exceed 38V for input) Output voltage: 1.25-36V continuously adjustable Output current: 0-5A, it is recommended to use within 4.5A Output power: recommended to use within 75W Working temperature: -40~+85 degrees Working frequency: 180KHz Conversion efficiency: up to 96% (efficiency is related to input, output voltage, current, and pressure difference) Load regulation rate: S(I)0.8% Voltage adjustment rate: S(u)0.8% Power indicator: Yes Short circuit protection: Yes (limited current 8A) Over-temperature protection: Yes (automatically shut down the output after over-temperature) Input reverse connection protection: None, (if necessary, please insert a high current diode in series in the input) Installation method: 2 3mm screws Wiring mode: welding, V-IN is input, V-OUT is output Size: 54mm in length, 23mm in width and 18mm in height Application Range: It can be used in the step-down field where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V car pen meter power supplies, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc. Note: If the output voltage of the module cannot be adjusted and is always equal to the input voltage, please turn the potentiometer counterclockwise for more than 10 turns, and then use the module to adjust the voltage normally. Because the output voltage of the step-down module is about 20V by default. Feature: Work Temperature: industrial grade (-40 degree to + 80 degree, please enhance heat dissipation if the temperature is high) No Load Current: typical 20mA Four high frequency low resistance electrolytic condensers lower the output ripple, which is more stable and reliable. Suitable for large power LED drive, battery charging, vehicle power supply, regulated power supply, low voltage system, constant current power supply, children toy car 12V power supply etc. DIY or other work requirements. Specifications: Module Type: Non-isolated step-down module, contant current module (CC CV), charging module, power supply module Material: PCB board and electronic component Input voltage: 7-32V Short-circuit Protection: Yes, constant current Constant Output Voltage: 0.8V-28V( constant adjustable ) Output Current: 12A (power tube temperature exceeds 65C please add cooling fan) Constant current range:0.2-12A ( adjustable ) Transfer Efficiency: 95% (MAX) Switching Frequency: 300KHz Output Ripple: 20M Output Power: Maximum power is about 300W (power tube temperature exceeds 65C please add cooling fan) Applications: 1. High-power LED driver 2. Lithium battery(or lead accumulator) charge 3. Vehicle-mounted power supply 4. Low voltage system power supply 5. 6V, 12V, 14V, 24V battery charge Feature: 1. Constant voltage constant cu