Click here for production status of specific part numbers.
MAX20343
EVALUATION KIT AVAILABLE
Ultra-Low Quiescent Curren...
Click here for production status of specific part numbers.
MAX20343
EVALUATION KIT AVAILABLE
Ultra-Low Quiescent Current, Low Noise 3.5W Buck-Boost Regulator
General Description
The MAX20343 is an ultra-low quiescent current, noninverting buck-boost converter with 1A current capability at 3.5V intended for applications that require long run times while also demanding bursts of high current. The device employs a unique control algorithm which seamlessly transitions between buck, buck-boost, and boost modes, minimizing discontinuities and subharmonics in the output
voltage ripple. The low 1.9V input
voltage for startup allows users to power the device from a variety of sources, and the near-zero minimum operating
voltage gives the user the ability to extract as much as possible from their energy source. The MAX20343 has also been designed to keep inductance and output capacitance requirements as low as possible for space-constrained applications.
The MAX20343 is ideal for power in optical sensor applications as well as for powering radios in low power, wide area network (LPWAN) applications since in both cases noise must be minimal and efficiency must be high. For instance, the small light-load output
voltage ripple allows a photoplethysmography (PPG) system to operate at low LED currents without interference. Additionally, seamless transitions between operating modes enables the use of dynamic
voltage scaling (DVS) to minimize headroom on the LED and to save power in such sy...