This design uses an ISL85403 synchronous buck or boost-buck controller in the buck-boost configuration to extract power from a supercapacitor (as low as 0.1V).
特性
The ISL85403 controller can fully extract the power of the supercapacitor
Buck-boost with electrical double-layer capacitor (EDLC) backup with one ISL85403
Quiescent current is only 300µA
Reliable solution for battery and EDLC-based never-stop systems