LM2577 DC-DC Voltage Step-Up (Boost) Module This module converts the microcontroller's power supply into a higher, adjustable voltage. Specifications Input voltage: 3.5 to 35 VDC Output Voltage: 5 to 55 VDC (adjustable) Max. input current: 3 A Continuous input current: 2 A Chip : LM2577 Dimensions: 1.69" x 1.18" x 0.47" (43 x 30 x 12 mm) Difficulty: Level 3 (intermediate)