Buck-Boost Regulators

Supporting up to 3 A of operating current, ST’s single-inductor synchronous buck-boost converters integrate four low on-state resistance power MOSFETs which contribute to PCB saving and reduced power losses, making them ideal for Li-ion battery-powered applications.

The main features of our buck-boost regulators include:

• Wide input voltage range (from 1.8 to 5.5 V) covering all the main battery solutions
• High switching frequency (up to 3 MHz) resulting in more compact designs (reduced size of passive components)
• Full set of monitoring: sync, Pgood and low battery detection
• Power-save mode at light load for higher efficiency
• Typical efficiency: > 94%
• Up to 3 A output current capability
• Shutdown current < 1 μA for extended battery life

They are mainly used where the input voltage can change from V_IN - V_OUT > V_IN  to  V_IN - V_OUT < V_IN