MP5512 4-18V, 4.5A High-Efficiency Energy Storage and Management Unit QFN28

MP5512 4-18V, 4.5A High-Efficiency Energy Storage and Management Unit QFN28

MP5512 is a high-efficiency energy storage and management unit targeting solid-state and hard-disk drive applications.

Key Specifications

Features

• Wide 4V-to-18V Operating Input Range
• Programmable Storage Voltage Up to 40V
• Programmable Input-Current Limit Up to 4.5A
• Input Reverse-Current Protection
• Adjustable dv/dt Slew Rate for Bus Voltage Start-up
• 14mΩ MOSFET for Input Hot-swap
• Internal 140mΩ and 110mΩ Power Switches for Energy-Storage and Release- Management Circuits
• VB Power-Good Indicator
• Input-Failure Indicator and Input-Early Warning for VIN Voltage
• ±3% Input-Current Limit at 2A

Typical Application Circuit

Applications

• Solid-State Drives
• 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