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MP4571 High-Efficiency Synchronous Buck Converters

Monolithic Power Systems (MPS) MP4571 Synchronous Buck Converters are fully integrated, high-efficiency, fixed-frequency synchronous step-down converters with up to 1A of continuous output current with peak current control for excellent transient response. The series features a wide 4.5V to 60V input voltage range and a 2μA shutdown mode quiescent current. The 12-pin QFN package integrates internal high-side and low-side power MOSFETs for high efficiency without the need for an external Schottky diode. Other features include built-in soft-start, enable control, power good (PG) indicator, high duty cycle, and low-dropout mode. The series offers overcurrent protection (OCP) with valley current detection and prevents current runaway. The converters have hiccup short-circuit protection (SCP), input undervoltage lockout (UVLO), and auto-recovery thermal protection. MPS MP4571 buck converters are ideal for battery-powered applications.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Mounting Style	Package/Case	Topology	Output Current	Number of Outputs	Quiescent Current	Switching Frequency	Packaging
	Switching Voltage Regulators High-Efficiency, 1A, 60V Fully Integrated Synchronous Buck Converter MP4571GQB-P Monolithic Power Systems (MPS) 1: 2.62 CHF 251In Stock 500Expected 19/01/2028	Mfr. Part No. MP4571GQB-P Mouser Part No 946-MP4571GQB-P	Monolithic Power Systems (MPS)	Switching Voltage Regulators High-Efficiency, 1A, 60V Fully Integrated Synchronous Buck Converter Learn More about Monolithic Power Systems (MPS) mps mp4571 step down converters	Datasheet	251In Stock 500Expected 19/01/2028	Cut Tape 2.62 CHF 1.96 CHF 1.80 CHF 1.61 CHF 1.53 CHF Reel 1.49 CHF MouseReel Available	Min.: 1 Mult.: 1 : 500			SMD/SMT	QFN-12	Buck	1 A	1 Output	40 uA	2.2 MHz	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators High-Efficiency, 1A, 60V Fully Integrated Synchronous Buck Converter MP4571GQB-Z Monolithic Power Systems (MPS) 1: 2.30 CHF 19 437On Order	Mfr. Part No. MP4571GQB-Z Mouser Part No 946-MP4571GQB-Z	Monolithic Power Systems (MPS)	Switching Voltage Regulators High-Efficiency, 1A, 60V Fully Integrated Synchronous Buck Converter Learn More about Monolithic Power Systems (MPS) mps mp4571 step down converters	Datasheet	19 437On Order On Order Ship Dates Mfr. No: MP4571GQB-Z Stock: 0 On Order: 9 437 Expected 05/11/2026 10 000 Expected 27/01/2027 Factory Lead Time: 64 Weeks	Cut Tape 2.30 CHF 1.72 CHF 1.57 CHF 1.41 CHF View Reel 1.21 CHF 1.34 CHF 1.31 CHF 1.21 CHF MouseReel Available	Min.: 1 Mult.: 1 : 5 000			SMD/SMT	QFN-12	Buck	1 A	1 Output	40 uA	2.2 MHz	Reel, Cut Tape, MouseReel

MP4571 High-Efficiency Synchronous Buck Converters

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