Navo LM2577 DC-DC Automatic Voltage Booster Module / Solar Energy Power Board - Deep Blue
Chip: LM2577 Input Voltage: 3-35V Output Voltage: 1.25-30V Output Current Max: 2A Interfer Efficiency Max: 92% Switch Frequency: 50KHz Output Ripple Max: 40mV Load Regulation Rate: ±0.5% Voltage Regulation Rate: ±2.5% Working Temperature: -40?—85?