MP5470B 4-16V Power Management IC QFN-22

MP5470B 4-16V Power Management IC QFN-22

The MP5470B is a complete power management IC that integrates four high- efficiency, step-down DC/DC converters and a flexible logic interface.

Key Specifications

Features

• System  I2C Slave  Flexible Power On/Off Sequence via MTP  Flexible DC/DC On/Off Control via MTP  Enable (EN) Pin

Typical Application Circuit

Applications

• Enterprise SSD
• FPGA-Based Design

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