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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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
Package/Case
Topology
Output Voltage
Output Current
Number of Outputs
Quiescent Current
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Series
Packaging
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A
Datasheet
870In Stock
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact
Datasheet
858In Stock
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact
Datasheet
490In Stock
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A
Datasheet
490In Stock
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact
Datasheet
4,104In Stock
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,
Datasheet
485In Stock
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact
Datasheet
420In Stock
500Expected 18/11/2026
Min.: 1
Mult.: 1
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A
Datasheet
Non-Stocked Lead-Time 22 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact
Datasheet
Non-Stocked Lead-Time 22 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact
Datasheet
Non-Stocked Lead-Time 22 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,
Datasheet
Non-Stocked
Min.: 500
Mult.: 500
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,
Datasheet
Non-Stocked Lead-Time 22 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A
Datasheet
Non-Stocked Lead-Time 22 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 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
Monolithic Power Systems (MPS) Switching Voltage Regulators 42V Load Dump Tolerant, 3A, Ultra-Compact,
Datasheet
Non-Stocked Lead-Time 22 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 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