MPQ4576-AEC1 4.5-60V, 400kHz Synchronous Buck Converter QFN-12

MPQ4576-AEC1 4.5-60V, 400kHz Synchronous Buck Converter QFN-12

Key Specifications

Features

• Designed for 24V and 36V Automotive or Industrial Systems: o Load Dump Up to 65V o Cold Crank Down to 4V
• Cooler Thermals: o Less than 8°C TJ Rise at 600mA / 400kHz o 91% Efficiency (24V to 5V, 600mA, 400kHz) o Low-Ohmic MPS BCD FET Technology
• Low-Noise EMI/EMC: o MeshConnectTM Flip Chip Packaging o Operates Outside of AM Radio Band
• Extends Vehicle Battery Life: o Low Quiescent Current in Standby Mode (40µA)
• Reduced Board Size and BOM: o Integrated Compensation Network o Available in a Small QFN-12 (2.5mmx3mm) Package

Applications

• Automotive Infotainment
• Automotive Lamps and LEDs
• Automotive Motor Control

Design Notes

• The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
• Keep the input loop short — high di/dt at the switch node sets conducted EMI.
• Power switches are integrated, so the thermal path is the PCB copper under the pad.
• AEC-Q100 qualification suits this part to automotive rails.
• Package QFN-12 — check the land pattern in the datasheet before layout.

Common Questions