MP5414 2.7-6.5V PMU QFN28

MP5414 2.7-6.5V PMU QFN28

The MP5414 is a highly-efficient fully-integrated PMU with a current-mode step-up converter, four single-pole/double-throw switches, low drop-out, and a battery charger designed for battery-powered supply applications.

Key Specifications

Features

• 1.8V Low Voltage Start-Up
• 1.8V to 5.5V Input Range
• Output Disconnect
• Integrated Power MOSFET and Schottky Diode
• Variable Frequency Control
• <1μA Shutdown Current
• Current Mode Control with Internal Compensation
• Inrush Current Limiting and Internal Soft- Start
• Input Under-Voltage Lockout CHARGER
• 0.75% VBATT Accuracy

Typical Application Circuit

Applications

• 2-Cell and 3-Cell NiCd/NiMH or Single-cell Li-Ion Battery Consumer Products
• 3D Glass Driver
• Small LCD Displays Bias Supply
• Digital Still and Video Cameras

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