1PCS DC Buck Converter 5V-32V to 0.8V-30V 5A Constant Current Constant LED CC CV Driver lithium-ion Battery Charging Module

Module nature: non-isolated step-down module Rectification method: non-synchronous rectification Input voltage: 5V-32V Output voltage: 0.8V-30V Output current: adjustable up to 5A Conversion efficiency: 95% (maximum) Switching frequency: 300KHz Output ripple: 50mV (maximum) 20M bandwidth Load regulation rate: ±0.5% Voltage adjustment rate: ±2.5% Working temperature: -40℃ to +85℃ Size: 51*26.3*14 (length * width * height) (mm) Features: The module uses imported high-quality chips, with high efficiency (Z 95% higher), and at the same time, the heat generation is small, and the Z can reach 5A current. At the same time, it cooperates with YUAN to install TI's operational amplifier to control the output current, making the overall output very stable. This module uses YUAN with low ESR to install Sanyo filter capacitors, which can make the ripple voltage as low as 50mV! This module uses machine placement, reflow soldering, and each module undergoes a two-hour aging test before shipment to ensure high reliability. This module is an adjustable step-down module, and the output voltage can be changed by adjusting the blue adjustable resistor on the module. The input and output voltage difference is 1V, and Z can output 0.8V voltage. The IN- (input negative), IN+ (input positive), OUT- (output negative), and OUT+ (output positive) marked on the module must be connected correctly, otherwise the module may be damaged. Battery charging method of use: 1. Determine the float voltage and charging current of the rechargeable battery you need, and the input voltage of the module; 2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V. 3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value; 4. The default shipping current of the charging lamp is 0.1 times the charging current (constant current value). 5. Adjust the constant voltage potentiometer to make the output voltage reach the float voltage; 6. Connect the battery and try charging. (Steps 1, 2, 3, 4, and 5 are to connect the input of the module to the power supply, and the output does not connect to the battery without load.) LED constant current drive How to use: 1. Determine the operating current and Z high operating voltage you need to drive the LED; 2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V. 3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current; 4. Adjust the constant voltage potentiometer to make the output voltage reach the LEDZ high working voltage; 5. Connect the LED and test the machine. (Steps 1, 2, 3, and 4 are for the module input to connect to the power supply, and the output is no-load without LED lights.)