Voltage Regulators - Switching Regulators

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MP4559 Step-Down Converters

Monolithic Power Systems (MPS) MP4559 Step-Down Converters are high-frequency switching regulators with an integrated high-side, high-voltage power MOSFET. The MP4559 series delivers 1.5A output with current mode control for a fast loop response and easy compensation. The wide input range of 3.8V to 55V accommodates many step-down applications, including automotive input environments. 12µA quiescent current in shutdown mode makes the MP4559 series suitable for battery-powered applications. Higher power conversion efficiency is achieved over a wide load range by scaling down the switching frequency under light load conditions.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Switching Voltage Regulators 1.5A, 2MHz, 55V Buck Converter MP4559DQ-LF-P Monolithic Power Systems (MPS) 1: S/ 9.50 841In Stock	Mfr. Part # MP4559DQ-LF-P Mouser Part # 946-MP4559DQ-LF-P	Monolithic Power Systems (MPS)	Switching Voltage Regulators 1.5A, 2MHz, 55V Buck Converter Learn More about Monolithic Power Systems (MPS) mps mp4559	Datasheet	841In Stock	Cut Tape S/ 9.50 S/ 7.08 S/ 6.46 S/ 5.80 Reel S/ 4.98 View S/ 5.45 S/ 4.87 S/ 4.79 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	QFN-10	Buck	800 mV to 52 V	1.5 A	1 Output	140 uA	2 MHz	- 40 C	+ 125 C	MP4559	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 1.5A, 2MHz, 55V Buck Converter MP4559DN-LF-Z Monolithic Power Systems (MPS) 1: S/ 7.86 2In Stock 105,000On Order	Mfr. Part # MP4559DN-LF-Z Mouser Part # 946-MP4559DN-LF-Z	Monolithic Power Systems (MPS)	Switching Voltage Regulators 1.5A, 2MHz, 55V Buck Converter Learn More about Monolithic Power Systems (MPS) mps mp4559	Datasheet	2In Stock 105,000On Order On Order Ship Dates Mfr. #: MP4559DN-LF-Z Stock: 2 Can Ship Immediately On Order: 22,500 Expected 2/25/2027 82,500 Expected 4/7/2027 Factory Lead-Time: 30 Weeks	Cut Tape S/ 7.86 S/ 5.80 S/ 5.25 S/ 4.67 Reel S/ 3.93 View S/ 4.40 S/ 4.24 S/ 3.87 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	SOIC-EP-8	Buck	800 mV to 52 V	1.5 A	1 Output	140 uA	1 MHz	- 40 C	+ 125 C	MP4559	Reel, Cut Tape, MouseReel
Switching Voltage Regulators 1.5A, 2MHz, 55V Buck Converter MP4559DQ-LF-Z Monolithic Power Systems (MPS) 1: S/ 8.33 Non-Stocked Lead-Time 30 Weeks	Mfr. Part # MP4559DQ-LF-Z Mouser Part # 946-MP4559DQ-LF-Z	Monolithic Power Systems (MPS)	Switching Voltage Regulators 1.5A, 2MHz, 55V Buck Converter Learn More about Monolithic Power Systems (MPS) mps mp4559	Datasheet	Non-Stocked Lead-Time 30 Weeks	Cut Tape S/ 8.33 S/ 6.15 S/ 5.61 S/ 4.98 View Reel S/ 4.44 S/ 4.71 S/ 4.44 S/ 4.44 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SMD/SMT	QFN-10	Buck	800 mV to 52 V	1.5 A	1 Output	140 uA	2 MHz	- 40 C	+ 125 C	MP4559	Reel, Cut Tape, MouseReel

MP4559 Step-Down Converters

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