Switching Controllers – Mouser Denmark

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Buck Converters for Power Over Ethernet

A buck converter is a power efficient voltage step-down converter that changes a higher voltage to a lower voltage. Whereas a linear regulator can achieve the same purpose, regulators can waste more energy via conversion of excess energy to heat. For this reason, a buck DC/DC converter is the preferred choice for power-efficient designs. A DC/DC boost converter, also known as a step-up converter, is a semiconductor device or electrical circuit that has an output DC voltage that is greater than the DC input voltage.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (DKK) Filter the results in the table by unit price based on your quantity.	Qty.	Topology	Number of Outputs	Switching Frequency	Duty Cycle - Max	Output Voltage	Output Current	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Package/Case	Qualification	Packaging
Switching Controllers Lo Vtg N-Ch MOSFET S ync Buck Reg Cntlr A 926-LM2743MTC/NOPB LM2743MTCX/NOPB Texas Instruments 1: 16,71 kr. 302In Stock 2.500Expected 23/11/2026	Mfr. Part No. LM2743MTCX/NOPB Mouser Part No 926-LM2743MTCX/NOPB	Texas Instruments	Switching Controllers Lo Vtg N-Ch MOSFET S ync Buck Reg Cntlr A 926-LM2743MTC/NOPB	Datasheet	302In Stock 2.500Expected 23/11/2026	Cut Tape 16,71 kr. 12,61 kr. 11,56 kr. 10,37 kr. Reel 9,25 kr. View 9,85 kr. 9,62 kr. 9,47 kr. 8,73 kr. MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Buck	1 Output	50 kHz to 1 MHz	80 %	Adjustable	4 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-14		Reel, Cut Tape, MouseReel
Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTCX/NOPB LM2745MTC/NOPB Texas Instruments 1: 24,17 kr. 579In Stock	Mfr. Part No. LM2745MTC/NOPB Mouser Part No 926-LM2745MTC/NOPB	Texas Instruments	Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTCX/NOPB	Datasheet	579In Stock	24,17 kr. 18,13 kr. 15,37 kr. 14,62 kr. View 14,02 kr. 13,50 kr. 13,13 kr. 12,98 kr. 12,83 kr.	Min.: 1 Mult.: 1	Buck	1 Output	50 kHz to 1 MHz	86 %	600 mV to 13.5 V	20 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-14		Tube
Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2748MTCX/NOPB LM2748MTC/NOPB Texas Instruments 1: 23,95 kr. 146In Stock	Mfr. Part No. LM2748MTC/NOPB Mouser Part No 926-LM2748MTC/NOPB	Texas Instruments	Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2748MTCX/NOPB	Datasheet	146In Stock	23,95 kr. 17,83 kr. 16,26 kr. 14,55 kr. View 13,80 kr. 12,91 kr. 12,83 kr. 12,61 kr. 12,53 kr.	Min.: 1 Mult.: 1	Buck	1 Output	50 kHz to 1 MHz	86 %	600 mV to 13.5 V	20 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-14		Tube
Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MH/NOPB A A 926-LM3150MH/NOPB LM3150MHE/NOPB Texas Instruments 1: 36,40 kr. 19In Stock 3.250Expected 14/06/2027	Mfr. Part No. LM3150MHE/NOPB Mouser Part No 926-LM3150MHE/NOPB	Texas Instruments	Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MH/NOPB A A 926-LM3150MH/NOPB Learn More about Texas Instruments ti LM3150 controllers	Datasheet	19In Stock 3.250Expected 14/06/2027	Cut Tape 36,40 kr. 27,83 kr. 25,74 kr. 23,35 kr. Reel 22,23 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	1 MHz	96 %	600 mV	12 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-14		Reel, Cut Tape, MouseReel
Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3151MH33NOPB LM3151MHE-3.3/NOPB Texas Instruments 1: 33,57 kr. 48In Stock	Mfr. Part No. LM3151MHE-3.3/NOPB Mouser Part No 926-LM3151MHE33NOPB	Texas Instruments	Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3151MH33NOPB Learn More about Texas Instruments ti LM315x	Datasheet	48In Stock	Cut Tape 33,57 kr. 25,44 kr. 23,35 kr. 21,19 kr. Reel 19,99 kr. View 19,47 kr. 18,20 kr. 17,98 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	250 kHz	90 %	3.3 V	12 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-14		Reel, Cut Tape, MouseReel
Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3152MH33NOPB LM3152MHE-3.3/NOPB Texas Instruments 1: 33,79 kr. 7In Stock	Mfr. Part No. LM3152MHE-3.3/NOPB Mouser Part No 926-LM3152MHE33NOPB	Texas Instruments	Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3152MH33NOPB Learn More about Texas Instruments ti LM315x	Datasheet	7In Stock	Cut Tape 33,79 kr. 25,66 kr. 23,57 kr. 22,38 kr. Reel 20,22 kr. View 19,32 kr. 19,02 kr. 18,95 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	500 kHz	81 %	3.3 V	12 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-14		Reel, Cut Tape, MouseReel
Switching Controllers Miniature Adjustabl e Step-Down DC-DC C LM3203TL/NOPB Texas Instruments 1: 10,29 kr. 166In Stock	Mfr. Part No. LM3203TL/NOPB Mouser Part No 926-LM3203TL/NOPB	Texas Instruments	Switching Controllers Miniature Adjustabl e Step-Down DC-DC C	Datasheet	166In Stock	Cut Tape 10,29 kr. 7,53 kr. 6,86 kr. 6,10 kr. Reel 5,73 kr. View 5,40 kr. 5,30 kr. 5,12 kr. 5,08 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	2 MHz	96 %	800 mV to 3.6 V	500 mA	- 30 C	+ 85 C	SMD/SMT	uSMD		Reel, Cut Tape, MouseReel
Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3485MMX/NOPB LM3485MM/NOPB Texas Instruments 1: 13,43 kr. 122In Stock	Mfr. Part No. LM3485MM/NOPB Mouser Part No 926-LM3485MM/NOPB	Texas Instruments	Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3485MMX/NOPB	Datasheet	122In Stock	Cut Tape 13,43 kr. 9,85 kr. 9,55 kr. 8,73 kr. Reel 7,68 kr. View 8,21 kr. 7,98 kr. 7,38 kr. 7,25 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Buck	1 Output	50 kHz to 1 MHz	100 %	1.242 V to 35 V	4 A	- 40 C	+ 125 C	SMD/SMT	VSSOP-8		Reel, Cut Tape, MouseReel
Switching Controllers Hysteretic PFET Buck Cntlr A 926-LM3485M A 926-LM3485MM/NOPB LM3485MMX/NOPB Texas Instruments 1: 12,76 kr. 83In Stock 7.000Expected 08/01/2027	Mfr. Part No. LM3485MMX/NOPB Mouser Part No 926-LM3485MMX/NOPB	Texas Instruments	Switching Controllers Hysteretic PFET Buck Cntlr A 926-LM3485M A 926-LM3485MM/NOPB	Datasheet	83In Stock 7.000Expected 08/01/2027	Cut Tape 12,76 kr. 9,40 kr. 8,50 kr. 7,53 kr. View Reel 6,01 kr. 7,12 kr. 6,86 kr. 6,80 kr. 6,01 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.500	Buck	1 Output	50 kHz to 1 MHz	100 %	1.242 V to 35 V	4 A	- 40 C	+ 125 C	SMD/SMT	VSSOP-8		Reel, Cut Tape, MouseReel
Switching Controllers Automotive Grade 4.5 -35V Hysteretic Non LM3485Q1MM/NOPB Texas Instruments 1: 12,83 kr. 601In Stock	Mfr. Part No. LM3485Q1MM/NOPB Mouser Part No 926-LM3485Q1MM/NOPB	Texas Instruments	Switching Controllers Automotive Grade 4.5 -35V Hysteretic Non	Datasheet	601In Stock	Cut Tape 12,83 kr. 9,40 kr. 8,58 kr. 7,68 kr. Reel 6,61 kr. View 7,25 kr. 7,06 kr. 6,51 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Buck	1 Output	50 kHz to 1 MHz	100 %	1.242 V to 35 V	4 A	- 40 C	+ 125 C	SMD/SMT	VSSOP-8	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Hysteretic PFET Buck Cntlr w/ Enable Pin A 926-LM3489QMMX/NOPB LM3489QMM/NOPB Texas Instruments 1: 16,26 kr. 210In Stock 2.000Expected 23/11/2026	Mfr. Part No. LM3489QMM/NOPB Mouser Part No 926-LM3489QMM/NOPB	Texas Instruments	Switching Controllers Hysteretic PFET Buck Cntlr w/ Enable Pin A 926-LM3489QMMX/NOPB	Datasheet	210In Stock 2.000Expected 23/11/2026	Cut Tape 16,26 kr. 12,09 kr. 11,04 kr. 9,85 kr. View Reel 7,83 kr. 9,03 kr. 8,80 kr. 7,83 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Buck	1 Output	1 MHz to 1.4 MHz	100 %	1.239 V to 35 V	4 A	- 40 C	+ 125 C	SMD/SMT	VSSOP-8	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers 75V Constant PFET Bu ck Switch Cntlr A 9 A 926-LM5085MYE/NOPB LM5085MY/NOPB Texas Instruments 1: 25,44 kr. 70In Stock 3.000On Order	Mfr. Part No. LM5085MY/NOPB Mouser Part No 926-LM5085MY/NOPB	Texas Instruments	Switching Controllers 75V Constant PFET Bu ck Switch Cntlr A 9 A 926-LM5085MYE/NOPB	Datasheet	70In Stock 3.000On Order On Order Ship Dates Mfr. No: LM5085MY/NOPB Stock: 70 Can Dispatch Immediately On Order: 1.000 Expected 26/02/2027 2.000 Expected 20/05/2027 Factory Lead Time: 26 Weeks	Cut Tape 25,44 kr. 19,25 kr. 17,68 kr. 15,59 kr. 14,77 kr. Reel 13,65 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Buck	1 Output	1 MHz	100 %	1.25 V to 75 V	1.75 A	- 40 C	+ 125 C	SMD/SMT	MSOP-PowerPad-8		Reel, Cut Tape, MouseReel
Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MYE/NOPB LM5085MYX/NOPB Texas Instruments 1: 20,89 kr. 14In Stock 24.500On Order	Mfr. Part No. LM5085MYX/NOPB Mouser Part No 926-LM5085MYX/NOPB	Texas Instruments	Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MYE/NOPB	Datasheet	14In Stock 24.500On Order On Order Ship Dates Mfr. No: LM5085MYX/NOPB Stock: 14 Can Dispatch Immediately On Order: 10.500 Expected 21/01/2027 14.000 Expected 04/03/2027 Factory Lead Time: 26 Weeks	Cut Tape 20,89 kr. 15,67 kr. 14,02 kr. 12,61 kr. Reel 10,44 kr. View 12,01 kr. 11,79 kr. 11,49 kr. 10,37 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.500	Buck	1 Output	1 MHz	100 %	1.25 V to 75 V	1.75 A	- 40 C	+ 125 C	SMD/SMT	MSOP-PowerPad-8		Reel, Cut Tape, MouseReel
Switching Controllers Automotive Grade 4.5 -75V Wide Vin Const A 926-LM5085QMYE/NOPB LM5085QMY/NOPB Texas Instruments 1: 28,87 kr. 61In Stock 3.000On Order	Mfr. Part No. LM5085QMY/NOPB Mouser Part No 926-LM5085QMY/NOPB	Texas Instruments	Switching Controllers Automotive Grade 4.5 -75V Wide Vin Const A 926-LM5085QMYE/NOPB	Datasheet	61In Stock 3.000On Order On Order Ship Dates Mfr. No: LM5085QMY/NOPB Stock: 61 Can Dispatch Immediately On Order: 1.000 Expected 31/12/2026 2.000 Expected 04/03/2027 Factory Lead Time: 26 Weeks	Cut Tape 28,87 kr. 21,86 kr. 20,14 kr. 17,68 kr. 16,71 kr. Reel 15,37 kr. MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Buck	1 Output	1 MHz	100 %	1.25 V to 75 V	1.75 A	- 40 C	+ 125 C	SMD/SMT	MSOP-PowerPad-8	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers 75V Constant PFET Bu ck Switch Cntlr A 9 A 926-LM5085QMY/NOPB LM5085QMYE/NOPB Texas Instruments 1: 27,60 kr. 149In Stock 1.000Expected 28/01/2027	Mfr. Part No. LM5085QMYE/NOPB Mouser Part No 926-LM5085QMYE/NOPB	Texas Instruments	Switching Controllers 75V Constant PFET Bu ck Switch Cntlr A 9 A 926-LM5085QMY/NOPB	Datasheet	149In Stock 1.000Expected 28/01/2027	Cut Tape 27,60 kr. 20,81 kr. 19,10 kr. 17,38 kr. Reel 14,70 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	1 MHz	100 %	1.25 V to 75 V	1.75 A	- 40 C	+ 125 C	SMD/SMT	MSOP-PowerPad-8	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085SD/NOPB LM5085SDE/NOPB Texas Instruments 1: 24,62 kr. 9In Stock	Mfr. Part No. LM5085SDE/NOPB Mouser Part No 926-LM5085SDE/NOPB	Texas Instruments	Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085SD/NOPB	Datasheet	9In Stock	Cut Tape 24,62 kr. 18,43 kr. 16,86 kr. 15,67 kr. Reel 13,13 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	1 MHz	100 %	1.25 V to 75 V	1.75 A	- 40 C	+ 125 C	SMD/SMT	LLP-8		Reel, Cut Tape, MouseReel
Switching Controllers Secondary Side Switc hing Reg A 926-LM51 A 926-LM5115MTCX/NOPB LM5115MTC/NOPB Texas Instruments 1: 35,44 kr. 134In Stock	Mfr. Part No. LM5115MTC/NOPB Mouser Part No 926-LM5115MTC/NOPB	Texas Instruments	Switching Controllers Secondary Side Switc hing Reg A 926-LM51 A 926-LM5115MTCX/NOPB	Datasheet	134In Stock	35,44 kr. 27,68 kr. 24,84 kr. 23,57 kr. View 22,98 kr. 22,23 kr. 21,93 kr. 21,71 kr.	Min.: 1 Mult.: 1	Buck	1 Output	1 MHz	85 %	750 mV to 13.5 V	2.5 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-16		Tube
Switching Controllers 5.5-65V Wide Vin Cu rrent Mode Synchrono A 595-LM5117PMHE/NOPB LM5117PMHX/NOPB Texas Instruments 1: 40,58 kr. 39In Stock 7.500Expected 11/03/2027	Mfr. Part No. LM5117PMHX/NOPB Mouser Part No 926-LM5117PMHX/NOPB	Texas Instruments	Switching Controllers 5.5-65V Wide Vin Cu rrent Mode Synchrono A 595-LM5117PMHE/NOPB	Datasheet	39In Stock 7.500Expected 11/03/2027	Cut Tape 40,58 kr. 31,18 kr. 28,80 kr. 25,96 kr. View Reel 22,98 kr. 24,99 kr. 24,77 kr. 24,69 kr. 22,98 kr. MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Buck	1 Output	50 kHz to 750 kHz	98 %	800 mV to 62 V	20 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-20		Reel, Cut Tape, MouseReel
Switching Controllers 4V-60V Input, Curren t Mode, Synchronous MP9928GF-Z Monolithic Power Systems (MPS) 1: 16,93 kr. 93In Stock 5.000Expected 11/01/2027	Mfr. Part No. MP9928GF-Z Mouser Part No 946-MP9928GF-Z	Monolithic Power Systems (MPS)	Switching Controllers 4V-60V Input, Curren t Mode, Synchronous	Datasheet	93In Stock 5.000Expected 11/01/2027	Cut Tape 16,93 kr. 12,61 kr. 11,56 kr. 10,00 kr. View Reel 8,36 kr. 9,40 kr. 9,18 kr. 8,73 kr. 8,36 kr.	Min.: 1 Mult.: 1 : 2.500	Buck	1 Output	300 kHz	99.5 %	24 V		- 40 C	+ 125 C	SMD/SMT	TSSOP-20		Reel, Cut Tape
Switching Controllers 76V Synchronous Buck Controller MIC2176-1YMM Microchip Technology 1: 15,59 kr. 70In Stock	Mfr. Part No. MIC2176-1YMM Mouser Part No 998-MIC2176-1YMM	Microchip Technology	Switching Controllers 76V Synchronous Buck Controller	Datasheet	70In Stock	15,59 kr. 13,06 kr. 11,79 kr.	Min.: 1 Mult.: 1	Buck	1 Output	100 kHz	96 %	Adjustable	15 A	- 40 C	+ 125 C	SMD/SMT	MSOP-10		Tube
Switching Controllers 76V Synchronous Buck Controller MIC2176-2YMM Microchip Technology 1: 15,59 kr. 65In Stock 300Expected 16/11/2026	Mfr. Part No. MIC2176-2YMM Mouser Part No 998-MIC2176-2YMM	Microchip Technology	Switching Controllers 76V Synchronous Buck Controller	Datasheet	65In Stock 300Expected 16/11/2026	15,59 kr. 13,06 kr. 11,79 kr.	Min.: 1 Mult.: 1	Buck	1 Output	100 kHz	96 %	Adjustable	15 A	- 40 C	+ 125 C	SMD/SMT	MSOP-10		Tube
Switching Controllers 3V Buck Contoller MIC2194YM Microchip Technology 1: 18,43 kr. 170In Stock	Mfr. Part No. MIC2194YM Mouser Part No 998-MIC2194YM	Microchip Technology	Switching Controllers 3V Buck Contoller	Datasheet	170In Stock	18,43 kr. 15,44 kr.	Min.: 1 Mult.: 1	Buck	1 Output	400 kHz	100 %	Adjustable		- 40 C	+ 125 C	SMD/SMT	SOP-8		Tube
Switching Controllers 300KHz Sync Buck Controller MIC2199YML Microchip Technology 1: 26,33 kr. 147In Stock	Mfr. Part No. MIC2199YML Mouser Part No 998-MIC2199YML	Microchip Technology	Switching Controllers 300KHz Sync Buck Controller	Datasheet	147In Stock	26,33 kr. 22,08 kr.	Min.: 1 Mult.: 1	Buck	1 Output	300 kHz	85 %	800 mV to 6 V	20 A	- 40 C	+ 125 C	SMD/SMT	MLF-12		Tube
Switching Controllers Monolithic SMPS Controller MIC38C43AYM Microchip Technology 1: 15,52 kr. 204In Stock	Mfr. Part No. MIC38C43AYM Mouser Part No 998-MIC38C43AYM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	204In Stock	15,52 kr. 12,98 kr. 11,79 kr.	Min.: 1 Mult.: 1	Boost, Buck	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Tube
Switching Controllers Monolithic SMPS Controller MIC38C43YM Microchip Technology 1: 8,21 kr. 418In Stock	Mfr. Part No. MIC38C43YM Mouser Part No 998-MIC38C43YM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	418In Stock	8,21 kr. 6,86 kr. 6,84 kr.	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Tube