MP5515 2.7-18V, 5A Power Back-Up Manager QFN-30

MP5515 2.7-18V, 5A Power Back-Up Manager QFN-30

The MP5515 is an input power conditioning PMIC targeting enterprise solid-state drives, NVDIMM, and other applications with back-up system requirements.

Key Specifications

Features

• Wide 2.7V-to-18V Operating Input Range
• Up to 32V Programmable Storage Voltage
• Up to 6A Programmable Input Current Limit
• 5A Buck Load Capability
• Adjustable Slew Rate for VB Voltage Rising
• Input Current Limiter with Integrated 14mΩ MOSFET
• Input Over-Voltage Protection (OVP)
• Reverse-Current Protection (RCP)
• Input Power Failure Indicator
• Backup Capacitor Health Test

Typical Application Circuit

Applications

• Solid-State Drives (SSD)
• Hard-Disk Drives

Design Notes

• Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
• In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
• Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
• Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.

Common Questions