MPQ4321GDE-5-AEC1-P

$3.26

Description：IC REG BUCK ADJ 1A 12QFN
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:f50b7c1e8ccc Category: Voltage Regulators - DC DC Switching Regulators Brand: Monolithic Power Systems Inc.

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Product introduction

MPQ4321GDE-5-AEC1-P is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Monolithic Power Systems Inc.. Its product description is IC REG BUCK ADJ 1A 12QFN. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for MPQ4321GDE-5-AEC1-P

Description：IC REG BUCK ADJ 1A 12QFN
Series：-
Mfr：Monolithic Power Systems Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3.3V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：34.2V
Current - Output：1A
Frequency - Switching：350kHz ~ 2.5MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount, Wettable Flank
Package / Case：12-PowerVFQFN
Supplier Device Package：12-QFN (2x3)
Grade：Automotive
Qualification：AEC-Q100

Voltage Regulators - DC DC Switching Regulators datasheet and documents for MPQ4321GDE-5-AEC1-P

MPQ4321GDE-5-AEC1-P

Voltage Regulators - DC DC Switching Regulators Overview

The MPQ4321GDE-5-AEC1-P is a synchronous step-down switching converter from Monolithic Power Systems, designed for automotive applications. It features a 3.3V to 36V input voltage range with 42V load dump tolerance and delivers up to 1A continuous output current. The device offers an adjustable switching frequency between 350kHz and 2.5MHz, ensuring optimized performance across various conditions. It operates within a junction temperature range of -40°C to 150°C and is AEC-Q100 Grade 1 qualified. The component utilizes a QFN-12 (2mm x 3mm) package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated high-side and low-side power MOSFETs for efficient power conversion
Frequency Spread Spectrum modulation for EMC/EMI reduction and CISPR25 Class 5 compliance
Supports cold-crank conditions with Low-Dropout mode and high-duty cycle operation
Includes over-current protection with Hiccup mode and Power Good output

Voltage Regulators - DC DC Switching Regulators Applications

Automotive infotainment systems
Automotive instrument clusters
Advanced Driver Assistance Systems (ADAS)
Industrial power systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix codes against official MPS documentation to confirm package dimensions, thermal characteristics, and qualification grades. Ensure the ordering part number matches the required switching frequency configuration and package variant. Cross-reference datasheet revisions to validate parameter consistency before integration into design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring robust automotive-grade regulation under harsh electrical environments. The wide input range and load dump tolerance make it suitable for battery-powered or alternator-fed systems. Consider the configurable frequency range for optimizing external component size and electromagnetic interference profiles in compact layouts.

Voltage Regulators - DC DC Switching Regulators Part Context

This model belongs to the MPQ4321C series of synchronous step-down converters. The series integrates internal power switches and supports frequencies up to 2.5MHz. It is engineered for high efficiency and reliability in demanding automotive and industrial sectors, offering various package options including QFN-12 and QFN-14 configurations.