Voltage Regulators - Switching Regulators

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MPQ4323 42V Synchronous Step-Down Converters

Monolithic Power Systems (MPS) MPQ4323 42V Synchronous Step-Down Converters are frequency-configurable (350kHz to 2.5MHz) step-down switching regulators. These devices feature integrated internal high-side and low-side power MOSFETs. The MPQ4323 regulators provide 3A of highly efficient output current with peak current mode control. The wide 3.3V to 36V input voltage range and 42V load dump tolerance accommodate a variety of step-down applications in automotive input environments. The MPQ4323 synchronous step-down converters offer a 1μA shutdown current (ISD) for battery-powered applications.

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Part #

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

MPQ4323CGRHE-AEC1-P
Monolithic Power Systems (MPS)
1: Rp57.240
480In Stock

Mfr. Part No.
MPQ4323CGRHE-AEC1-P

Mouser Part No
946-PQ4323CGRHEAEC1P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

Learn More

Datasheet

480In Stock

Cut Tape

Rp57.240

Rp42.930

Rp39.260

Rp35.408

Reel

Rp31.739

View

Min.: 1
Mult.: 1

: 500

SMD/SMT

QFN-14

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

MPQ4323GDE-33-AEC1-P
Monolithic Power Systems (MPS)
1: Rp55.405
858In Stock

Mfr. Part No.
MPQ4323GDE-33-AEC1-P

Mouser Part No
946-MPQ4323GDE-33P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

Datasheet

858In Stock

Cut Tape

Rp55.405

Rp41.645

Rp37.976

Rp34.307

Reel

Rp31.188

View

Min.: 1
Mult.: 1

: 500

SMD/SMT

QFN-12

Buck

3.3 V

3 A

1 Output

20 uA

2.2 MHz

- 40 C

+ 150 C

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

MPQ4323GDE-38-AEC1-P
Monolithic Power Systems (MPS)
1: Rp55.405
490In Stock

Mfr. Part No.
MPQ4323GDE-38-AEC1-P

Mouser Part No
946-MPQ4323GDE-38P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

Datasheet

490In Stock

Cut Tape

Rp55.405

Rp41.645

Rp37.976

Rp34.307

Reel

Rp31.188

View

Min.: 1
Mult.: 1

: 500

SMD/SMT

QFN-12

Buck

3.8 V

3 A

1 Output

20 uA

2.2 MHz

- 40 C

+ 150 C

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

MPQ4323CGDE-AEC1-P
Monolithic Power Systems (MPS)
1: Rp55.405
340In Stock
500Expected 08/09/2027

Mfr. Part No.
MPQ4323CGDE-AEC1-P

Mouser Part No
946-MPQ4323CGDEAEC1P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

Learn More

Datasheet

340In Stock

500Expected 08/09/2027

Cut Tape

Rp55.405

Rp41.645

Rp37.976

Rp34.307

Reel

Rp30.821

View

Min.: 1
Mult.: 1

: 500

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

MPQ4323GDE-AEC1-P
Monolithic Power Systems (MPS)
1: Rp55.405
411In Stock
500Expected 17/07/2026

Mfr. Part No.
MPQ4323GDE-AEC1-P

Mouser Part No
946-MPQ4323GDE-AEC1P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

Learn More

Datasheet

411In Stock

500Expected 17/07/2026

Cut Tape

Rp55.405

Rp41.645

Rp37.976

Rp34.307

Reel

Rp31.188

View

Min.: 1
Mult.: 1

: 500

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

MPQ4323GDE-AEC1-Z
Monolithic Power Systems (MPS)
1: Rp48.800
9In Stock
5.000Expected 17/12/2027

Mfr. Part No.
MPQ4323GDE-AEC1-Z

Mouser Part No
946-MPQ4323GDE-AEC1Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

Learn More

Datasheet

9In Stock

5.000Expected 17/12/2027

Cut Tape

Rp48.800

Rp36.509

Rp33.390

Rp29.904

View

Reel

Rp24.951

Min.: 1
Mult.: 1

: 5.000

SMD/SMT

QFN-12

Buck

800 mV to 32.4 V

3 A

1 Output

20 uA

2.2 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

MPQ4323MGQCE-AEC1-P
Monolithic Power Systems (MPS)
1: Rp65.679
485In Stock

Mfr. Part No.
MPQ4323MGQCE-AEC1-P

Mouser Part No
946-PQ4323MGQCEAEC1P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

Learn More

Datasheet

485In Stock

Cut Tape

Rp65.679

Rp48.984

Rp44.764

Rp40.178

Reel

Rp36.142

View

Min.: 1
Mult.: 1

: 500

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

MPQ4323CGDE-AEC1-Z
Monolithic Power Systems (MPS)
5.000: Rp25.317
Non-Stocked Lead-Time 71 Weeks

Mfr. Part No.
MPQ4323CGDE-AEC1-Z

Mouser Part No
946-MPQ4323CGDEAEC1Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

Learn More

Datasheet

Non-Stocked Lead-Time 71 Weeks

Reel

Rp25.317

Min.: 5.000
Mult.: 5.000

: 5.000

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

MPQ4323GDE-33-AEC1-Z
Monolithic Power Systems (MPS)
5.000: Rp25.317
Non-Stocked Lead-Time 71 Weeks

Mfr. Part No.
MPQ4323GDE-33-AEC1-Z

Mouser Part No
946-MPQ4323GDE-33Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

Datasheet

Non-Stocked Lead-Time 71 Weeks

Reel

Rp25.317

Min.: 5.000
Mult.: 5.000

: 5.000

SMD/SMT

QFN-12

Buck

3.3 V

3 A

1 Output

20 uA

2.2 MHz

- 40 C

+ 150 C

MPQ4323

Reel

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

MPQ4323GDE-38-AEC1-Z
Monolithic Power Systems (MPS)
5.000: Rp25.317
Non-Stocked Lead-Time 71 Weeks

Mfr. Part No.
MPQ4323GDE-38-AEC1-Z

Mouser Part No
946-MPQ4323GDE-38Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact

Datasheet

Non-Stocked Lead-Time 71 Weeks

Reel

Rp25.317

Min.: 5.000
Mult.: 5.000

: 5.000

SMD/SMT

QFN-12

Buck

3.8 V

3 A

1 Output

20 uA

2.2 MHz

- 40 C

+ 150 C

MPQ4323

Reel

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

MPQ4323GLE-AEC1-P
Monolithic Power Systems (MPS)
500: Rp32.106
Non-Stocked

Mfr. Part No.
MPQ4323GLE-AEC1-P

Mouser Part No
946-MPQ4323GLEAEC1P

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

Learn More

Datasheet

Non-Stocked

Reel

Rp32.106

Rp30.638

Rp29.721

Rp29.170

Min.: 500
Mult.: 500

: 500

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

MPQ4323GLE-AEC1-Z
Monolithic Power Systems (MPS)
1: Rp50.818
Non-Stocked Lead-Time 71 Weeks

Mfr. Part No.
MPQ4323GLE-AEC1-Z

Mouser Part No
946-MPQ4323GLEAEC1Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

Learn More

Datasheet

Non-Stocked Lead-Time 71 Weeks

Cut Tape

Rp50.818

Rp37.793

Rp34.674

Rp31.005

View

Reel

Rp26.051

MouseReel Available

Min.: 1
Mult.: 1

: 5.000

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

20 uA

2.2 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

MPQ4323CGRHE-AEC1-Z
Monolithic Power Systems (MPS)
5.000: Rp26.235
Non-Stocked Lead-Time 71 Weeks

Mfr. Part No.
MPQ4323CGRHE-AEC1-Z

Mouser Part No
946-PQ4323CGRHEAEC1Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A

Learn More

Datasheet

Non-Stocked Lead-Time 71 Weeks

Reel

Rp26.235

Min.: 5.000
Mult.: 5.000

: 5.000

SMD/SMT

QFN-14

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

MPQ4323MGQCE-AEC1-Z
Monolithic Power Systems (MPS)
1: Rp58.157
Non-Stocked Lead-Time 71 Weeks

Mfr. Part No.
MPQ4323MGQCE-AEC1-Z

Mouser Part No
946-PQ4323MGQCEAEC1Z

Monolithic Power Systems (MPS)

Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,

Learn More

Datasheet

Non-Stocked Lead-Time 71 Weeks

Cut Tape

Rp58.157

Rp43.480

Rp39.811

Rp35.591

View

Reel

Rp33.206

Min.: 1
Mult.: 1

: 5.000

SMD/SMT

QFN-12

Buck

42 V

3 A

1 Output

1 uA

350 kHz to 2.5 MHz

- 40 C

+ 150 C

AEC-Q100

MPQ4323

Reel, Cut Tape

MPQ4323 42V Synchronous Step-Down Converters

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