Six-rail supervisor for dense power sequencing
The MAX16055AAUB+ from Maxim Integrated is a multi-voltage supervisor that monitors up to six supply rails simultaneously, with an active-low, open-drain reset output. It is designed for systems where multiple voltage domains (e.g., core, I/O, memory, analog) must be tracked for undervoltage faults and sequenced at power-up. The 140 ms minimum reset timeout holds the system in reset long enough for all rails to stabilise before the processor starts, which avoids boot-up glitches on multi-rail boards like FPGAs, SoCs, or mixed-signal designs.
Six selectable threshold combinations — what that means for your BOM
The part offers six selectable threshold combinations, meaning a single device can be configured to monitor different voltage levels without needing separate supervisor ICs for each rail.
Package and footprint
Housed in a 10-pin TFSOP/MSOP (3.00 mm body width) with a surface-mount footprint, the MAX16055AAUB+ fits on space-constrained PCBs alongside fine-pitch BGAs and passives. The supplier device package is 10-uMAX/uSOP, a common footprint shared with other Maxim supervisors, which eases layout reuse across a product family.
Lifecycle and sourcing reality
It is available through independent distribution and can be quoted to order against an RFQ. For dual-sourcing or second-source planning, Maxim's supervisor family includes pin-compatible variants with different threshold sets — verify the specific threshold combination needed for your rail voltages before substituting. No LTB risk for ongoing production runs.