MPQ4328GRE-5-AEC1-P

Voltage Regulators - DC DC Switching Regulators Overview

The MPQ4328GRE-5-AEC1-P is an automotive-grade, synchronous step-down DC/DC converter manufactured by Monolithic Power Systems. It integrates two high-side N-channel MOSFETs and a bootstrap diode within a compact QFN package. The device operates with an input voltage range of 4.5V to 36V, delivering up to 3A of continuous output current. It supports adjustable output voltages via an external resistor divider or fixed configurations. The converter utilizes constant frequency peak current mode control for rapid transient response and includes comprehensive protection features such as overcurrent, overvoltage, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in harsh environments
• Integrated power stage with low on-resistance MOSFETs for high efficiency
• Constant frequency peak current mode control architecture
• Comprehensive protection mechanisms including short-circuit and thermal overload safety

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment systems in automotive electronics
• Telematics control units
• Body control modules (BCM)
• Instrument clusters and display drivers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AEC1' confirms automotive grade qualification and lead-free RoHS compliance when sourcing. Ensure the 'GRE' package code matches the required footprint and thermal pad configuration for your PCB layout. Cross-reference the full part number against official manufacturer distributors to confirm availability and authenticity, as counterfeit components may lack proper automotive certification documentation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing power supplies for automotive applications requiring high efficiency and small form factor. It is suitable for systems needing stable 3A output from varying input voltages typical in vehicle electrical architectures. Consider the thermal performance of the exposed pad design for heat dissipation requirements. Verify that the fixed output voltage option meets the load requirements without needing external feedback adjustments.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MPQ43xx series of synchronous buck converters designed specifically for automotive markets. It shares architectural similarities with other members of the family but is distinguished by its AEC-Q100 qualification and specific pinout compatibility. The series targets applications demanding robust performance under wide temperature ranges and electrical noise conditions common in vehicles.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements must match the 36V input limit, 3A current capability, and QFN package dimensions. Verify equivalent automotive qualification status if substituting with parts from other manufacturers. Check for compatible control loop stability and switching frequency to ensure no redesign of passive components is required.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum operating junction temperature for this device?

The device is qualified for automotive use, typically supporting an extended junction temperature range up to 150°C, subject to specific datasheet thermal derating curves.

Does the MPQ4328GRE-5 support soft-start functionality?

Yes, the converter includes an internal soft-start mechanism to limit inrush current during startup and ensure smooth voltage ramp-up.