Can be use as charger, LED constant current supply or power supply. This module is an adjustable buck (step down) module, the module can be adjusted from the blue adjustable resistor to change the output voltage. High efficiency (up to 92%), low heat, can supply 3A current, in conjunction with the original TI op amp control output current, so the overall output is very stable. Module indicated IN - (negative input), IN + (positive input), OUT - (negative output), OUT + (positive output), please note must be correct connected, otherwise may cause damage to the module.

Description:
Nature of the module: Non-isolated step-down module.
Rectification: Non-synchronous rectification
Input voltage: 7V - 35V
Output voltage: 1.25V - 30V
Output current: Adjustable, 3A (maximum)
Transfer efficiency: 92% (maximum)
Switching frequency: 150KHz
output ripple: 50mV (maximum)
Load regulation: ±0.5%
Voltage regulation: ±2.5%
Operating temperature: -40°C to +85°C
Dimension: 48 x 23 x 14mm (L x W x H)