The Pololu 3.3V Step-up Voltage Regulator U1V11F3 is a compact switching regulator designed to efficiently boost input voltages as low as 0.5 V to a stable 3 V output. It features a true shutdown capability, allowing complete power disconnection from the load, and automatically switches to a linear down-regulation mode when the input voltage exceeds the output.
This regulator is ideal for powering 3 V electronics from various battery types, including NiMH, NiCd, or lithium-ion cells. It offers high efficiency, typically ranging from 70% to 90%, and supports input currents up to 1.2 A. The device includes thermal shutdown protection to prevent overheating.
4x1 Straight male header strip
4x1 Right-angle male header strip
12 x 15 x 3 mm (0.45 x 0.6 x 0.1")
Input voltage range: 0.5 V to 5 V
Fixed 3 V output with 4% accuracy
True shutdown option to turn off power to the load
Automatic linear down-regulation when input voltage exceeds output voltage
1.2 A switch supports input currents up to 1.2 A
Efficient at light load with typical no-load quiescent current under 1 mA
