Texas Instruments’ TPS61099 Synchronous Boost Converter
https://www.electronics-lab.com/texas-instruments-tps61099-synchronous-boost-converter/
Texas Instruments’ converter features 800 nA ultra-low quiescent current Texas Instruments’ TPS61099x is a synchronous boost converter with 1 µA ultra-low quiescent current. The device is designed for products powered by alkaline batteries, NiMH rechargeable batteries, Li-Mn batteries, or rechargeable Li-Ion batteries where a high efficiency under light-load condition is critical to achieving long battery life […]