MPQ4487-AEC1 6-36V, 6A Step-Down Converter QFN-26

MPQ4487-AEC1 6-36V, 6A Step-Down Converter QFN-26

The MPQ4487 integrates a monolithic, step- down, switch-mode converter with two USB current-limit switches and Type-C 5V @ 3A mode configuration channels for each port.

Key Specifications

Features

• Wide 6V to 36V Operating Input Voltage Range
• Selectable Output Voltage
• Line Drop Compensation
• Accurate USB1/USB2 Output Current Limit
• 18mΩ/15mΩ Low RDS(ON) Internal Buck Power MOSFETs
• 18mΩ/18mΩ Low RDS(ON) Internal USB1/USB2 Power MOSFETs
• Frequency Adjustable (250kHz to 2.2MHz) Frequency Spread Spectrum for MPQ4487GU-FD-AEC1
• Forced Continuous Conduction Mode (CCM) Operation
• Load Shedding Versus Temperature
• Hiccup Current Limit for both Buck and USB

Typical Application Circuit

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