Other FeaturesInput Voltage: 3V – 40V DC Output Voltage: 1.23V – 30V DC (adjustable) Maximum Output Current: 3A Conversion Type: Step-Down (Buck Converter) Efficiency: up to 92% Frequency: 150 kHz Protection: Overcurrent and heat protection Sensitive voltage setting with trimpot Dimensions: 43 mm × 21 mm × 14 mm Usage Area: Arduino, led, battery charging circuits, robotic projects