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	Input Voltage	Output Voltage	Output Current	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Package/Case	Qualification	Packaging
Switching Controllers 18.5V Input PWM/VFM Step-down DCDC Controller R1224N502G-TR-FE Nisshinbo 3.000: 5,00 kr. Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. R1224N502G-TR-FE Mouser Part No 848-R1224N502G-TR-FE	Nisshinbo	Switching Controllers 18.5V Input PWM/VFM Step-down DCDC Controller	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,00 kr. 4,91 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	300 kHz	100 %		5 V	50 mA	- 40 C	+ 85 C	SMD/SMT	SOT-23-5		Reel
Switching Controllers 18.5V Input PWM/VFM Step-down DCDC Controller R1224N502H-TR-FE Nisshinbo 3.000: 5,00 kr. Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. R1224N502H-TR-FE Mouser Part No 848-R1224N502H-TR-FE	Nisshinbo	Switching Controllers 18.5V Input PWM/VFM Step-down DCDC Controller	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,00 kr. 4,91 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	500 kHz	100 %		5 V	50 mA	- 40 C	+ 85 C	SMD/SMT	SOT-23-5		Reel
Switching Controllers Buck DC/DC Controller R1224N502L-TR-FE Nisshinbo 3.000: 5,00 kr. Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. R1224N502L-TR-FE Mouser Part No 848-R1224N502LTRFE	Nisshinbo	Switching Controllers Buck DC/DC Controller	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,00 kr. 4,91 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	180 kHz	100 %		5 V		- 40 C	+ 85 C	SMD/SMT	SOT-23-5		Reel
Switching Controllers 1MHz Synchronous Buck Controller MIC2168AYMM Microchip Technology 1: 18,13 kr. Non-Stocked Lead-Time 11 Weeks	Mfr. Part No. MIC2168AYMM Mouser Part No 998-MIC2168AYMM	Microchip Technology	Switching Controllers 1MHz Synchronous Buck Controller	Datasheet	Non-Stocked Lead-Time 11 Weeks	18,13 kr. 15,22 kr.	Min.: 1 Mult.: 1	Buck	1 Output	1 MHz	90 %		Adjustable		- 40 C	+ 125 C	SMD/SMT	MSOP-10		Tube
Switching Controllers Monolithic SMPS Controller MIC38C42AYMM Microchip Technology 1: 6,80 kr. Non-Stocked Lead-Time 11 Weeks	Mfr. Part No. MIC38C42AYMM Mouser Part No 998-MIC38C42AYMM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	Non-Stocked Lead-Time 11 Weeks	6,80 kr. 5,65 kr. 5,13 kr.	Min.: 1 Mult.: 1	Boost, Buck	1 Output	500 kHz	96 %		5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	MSOP-8		Tube
Switching Controllers Monolithic SMPS Controller MIC38C42YMM Microchip Technology 1: 6,80 kr. Non-Stocked Lead-Time 11 Weeks	Mfr. Part No. MIC38C42YMM Mouser Part No 998-MIC38C42YMM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	Non-Stocked Lead-Time 11 Weeks	6,80 kr. 5,65 kr. 5,13 kr.	Min.: 1 Mult.: 1	Boost, Buck	1 Output	500 kHz	96 %		5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	MSOP-8		Tube
Switching Controllers Monolithic SMPS Controller MIC38HC42-1YM Microchip Technology 1: 23,05 kr. Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. MIC38HC42-1YM Mouser Part No 998-MIC38HC42-1YM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	Non-Stocked Lead-Time 9 Weeks	23,05 kr. 19,32 kr. 17,38 kr.	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %		5 V	1 A	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Tube
Switching Controllers Monolithic SMPS Controller MIC38HC42YM-TR Microchip Technology 2.500: 7,83 kr. Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. MIC38HC42YM-TR Mouser Part No 998-MIC38HC42YMTR	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel 7,83 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %		5 V	1 A	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Reel
Switching Controllers Sync Buck, PWM Ctrl 300Khz, 20ns MCP19035-AAAAE/MF Microchip Technology 1: 13,35 kr. Non-Stocked	Mfr. Part No. MCP19035-AAAAE/MF Mouser Part No 579-MCP19035AAAAE/MF	Microchip Technology	Switching Controllers Sync Buck, PWM Ctrl 300Khz, 20ns Learn More about Microchip Technology microchip mcp19035	Datasheet	Non-Stocked	13,35 kr. 11,12 kr. 10,22 kr.	Min.: 1 Mult.: 1	Buck	1 Output	300 kHz	85 %		5 V	50 mA	- 40 C	+ 125 C	SMD/SMT	DFN-10	AEC-Q100	Tube
Switching Controllers 42V 100% duty-cycle capable dual-chann LM25137F2RHAR Texas Instruments 2.500: 13,28 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25137F2RHAR Mouser Part No 595-LM25137F2RHAR New Product	Texas Instruments	Switching Controllers 42V 100% duty-cycle capable dual-chann Learn More about Texas Instruments ti lm25137f q1 buck controllers	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 13,28 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 42 V	800 mV to 36 V				SMD/SMT	VQFN-36		Reel
Switching Controllers 42V 100% duty-cycle capable dual-chann LM25137F3RHAR Texas Instruments 2.500: 15,82 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25137F3RHAR Mouser Part No 595-LM25137F3RHAR New Product	Texas Instruments	Switching Controllers 42V 100% duty-cycle capable dual-chann Learn More about Texas Instruments ti lm25137f q1 buck controllers	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 15,82 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 42 V	800 mV to 36 V				SMD/SMT	VQFN-36		Reel
Switching Controllers Automotive 42V 100 % duty-cycle dual-c LM25137FBQRHARQ1 Texas Instruments 2.500: 16,26 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25137FBQRHARQ1 Mouser Part No 595-LM25137FBQRHARQ1 New Product	Texas Instruments	Switching Controllers Automotive 42V 100 % duty-cycle dual-c Learn More about Texas Instruments ti lm25137f q1 buck controllers	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 16,26 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 42 V	800 mV to 36 V		- 40 C	+ 125 C	SMD/SMT	VQFN-36		Reel
Switching Controllers Automotive 42V 100 % duty-cycle dual-c LM25137FDQRHARQ1 Texas Instruments 2.500: 17,68 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25137FDQRHARQ1 Mouser Part No 595-LM25137FDQRHARQ1 New Product	Texas Instruments	Switching Controllers Automotive 42V 100 % duty-cycle dual-c Learn More about Texas Instruments ti lm25137f q1 buck controllers	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 17,68 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 42 V	800 mV to 36 V		- 40 C	+ 125 C	SMD/SMT	VQFN-36		Reel
Switching Controllers Automotive 42V input low-Iq buck control LM25139D5QRGTRQ1 Texas Instruments 3.000: 8,21 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25139D5QRGTRQ1 Mouser Part No 595-LM25139D5QRGTRQ1 New Product	Texas Instruments	Switching Controllers Automotive 42V input low-Iq buck control	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 8,21 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	100 kHz to 2.2 MHz	99 %	3.5 V to 42 V	800 mV to 36 V		- 40 C	+ 125 C	SMD/SMT	VQFN-16		Reel
Switching Controllers 42V input low-Iq buc k controller with a LM25139D5RGTR Texas Instruments 1: 14,10 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25139D5RGTR Mouser Part No 595-LM25139D5RGTR New Product	Texas Instruments	Switching Controllers 42V input low-Iq buc k controller with a	Datasheet	Non-Stocked Lead-Time 26 Weeks	Cut Tape 14,10 kr. 10,44 kr. 9,47 kr. 8,50 kr. View Reel 6,99 kr. 8,06 kr. 7,76 kr. 7,53 kr. 6,99 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Buck	1 Output	100 kHz to 3.2 MHz	100 %	3.5 V to 42 V	800 mV to 36 V		- 40 C	+ 150 C	SMD/SMT	VQFN-16		Reel, Cut Tape, MouseReel
Switching Controllers Automotive 42V input low-Iq buck control LM25139QRGTRQ1 Texas Instruments 1: 16,26 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25139QRGTRQ1 Mouser Part No 595-LM25139QRGTRQ1 New Product	Texas Instruments	Switching Controllers Automotive 42V input low-Iq buck control Learn More about Texas Instruments ti lm25139 q1 controller	Datasheet	Non-Stocked Lead-Time 26 Weeks	Cut Tape 16,26 kr. 12,16 kr. 11,04 kr. 9,92 kr. Reel 8,13 kr. View 9,40 kr. 9,03 kr. 8,88 kr. 8,06 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Buck	1 Output	100 kHz to 3.2 MHz	99 %	4 V to 42 V	800 mV to 36 V	20 A	- 40 C	+ 150 C	SMD/SMT	VQFN-16		Reel, Cut Tape, MouseReel
Switching Controllers 42V input low-Iq buc k controller with a LM25139RGTR Texas Instruments 3.000: 6,99 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25139RGTR Mouser Part No 595-LM25139RGTR New Product	Texas Instruments	Switching Controllers 42V input low-Iq buc k controller with a	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 6,99 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	100 kHz to 3.2 MHz	100 %	3.5 V to 42 V	800 mV to 36 V		- 40 C	+ 150 C	SMD/SMT	VQFN-16		Reel
Switching Controllers Low Iq Wide Input R ange Synchronous Buc A 595-LM25141RGET LM25141RGER Texas Instruments 3.000: 12,16 kr. Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. LM25141RGER Mouser Part No 595-LM25141RGER	Texas Instruments	Switching Controllers Low Iq Wide Input R ange Synchronous Buc A 595-LM25141RGET Learn More about Texas Instruments ti lm25141 controller	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 12,16 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	440 kHz, 2.2 MHz	99 %		3.3 V, 5 V, 1.5 V to 15 V	20 A	- 40 C	+ 125 C	SMD/SMT	VQFN-24		Reel
Switching Controllers Automotive 36V 4-s w itch buck-boost con LM251772QRHARQ1 Texas Instruments 4.000: 26,78 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM251772QRHARQ1 Mouser Part No 595-LM251772QRHARQ1 New Product	Texas Instruments	Switching Controllers Automotive 36V 4-s w itch buck-boost con	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 26,78 kr.	Min.: 4.000 Mult.: 4.000 : 4.000	Boost, Buck	1 Output	100 kHz to 2.2 MHz	100 %	3.5 V to 36 V	1 V to 55 V		- 40 C	+ 150 C	SMD/SMT	VQFN-40		Reel
Switching Controllers Automotive 42V sync hronous buck control LM25190QRGYRQ1 Texas Instruments 3.000: 13,06 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM25190QRGYRQ1 Mouser Part No 595-LM25190QRGYRQ1 New Product	Texas Instruments	Switching Controllers Automotive 42V sync hronous buck control	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 13,06 kr. 12,98 kr.	Min.: 3.000 Mult.: 3.000 : 3.000	Buck	1 Output	2.4 MHz	99 %	5 V to 42 V	800 mV to 41 V	20 A	- 40 C	+ 150 C	SMD/SMT	VQFN-19		Reel
Switching Controllers High Perf Sync Buck Controller A 595-LM2 A 595-LM27403SQE/NOPB LM27403SQX/NOPB Texas Instruments 4.500: 12,61 kr. Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. LM27403SQX/NOPB Mouser Part No 595-LM27403SQX/NOPB	Texas Instruments	Switching Controllers High Perf Sync Buck Controller A 595-LM2 A 595-LM27403SQE/NOPB Learn More about Texas Instruments ti lm27403 buck controller	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 12,61 kr.	Min.: 4.500 Mult.: 4.500 : 4.500	Buck	1 Output	1.05 MHz	93 %		4.7 V		- 40 C	+ 125 C	SMD/SMT	WQFN-24		Reel
Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117QPMH/NOPB LM5117QPMHE/NOPB Texas Instruments 250: 35,21 kr. Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. LM5117QPMHE/NOPB Mouser Part No 595-LM5117QPMHE/NOPB	Texas Instruments	Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117QPMH/NOPB	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 35,21 kr.	Min.: 250 Mult.: 250 : 250	Buck	1 Output	50 kHz to 750 kHz	98 %		800 mV to 62 V	20 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-20	AEC-Q100	Reel
Switching Controllers 80V 100% duty-cycle capable dual-chann LM5137F2RHAR Texas Instruments 2.500: 17,83 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM5137F2RHAR Mouser Part No 595-LM5137F2RHAR New Product	Texas Instruments	Switching Controllers 80V 100% duty-cycle capable dual-chann Learn More about Texas Instruments ti lm5137f q1 automotive buck controllers	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 17,83 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 80 V	800 mV to 60 V				SMD/SMT	VQFN-36		Reel
Switching Controllers 80V 100% duty-cycle capable dual-chann LM5137F3RHAR Texas Instruments 2.500: 19,47 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM5137F3RHAR Mouser Part No 595-LM5137F3RHAR New Product	Texas Instruments	Switching Controllers 80V 100% duty-cycle capable dual-chann Learn More about Texas Instruments ti lm5137f q1 automotive buck controllers	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel 19,47 kr.	Min.: 2.500 Mult.: 2.500 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 80 V	800 mV to 60 V				SMD/SMT	VQFN-36		Reel
Switching Controllers 80V 100% duty-cycle capable dual-channe LM5137RHAR Texas Instruments 1: 33,87 kr. Non-Stocked Lead-Time 26 Weeks New Product	Mfr. Part No. LM5137RHAR Mouser Part No 595-LM5137RHAR New Product	Texas Instruments	Switching Controllers 80V 100% duty-cycle capable dual-channe	Datasheet	Non-Stocked Lead-Time 26 Weeks	Cut Tape 33,87 kr. 25,89 kr. 23,80 kr. 21,63 kr. View Reel 19,69 kr. 20,59 kr. 20,29 kr. 19,77 kr. 19,69 kr. MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Buck	2 Output	100 kHz to 2.64 MHz	100 %	4 V to 80 V	800 mV to 60 V		- 40 C	+ 150 C	SMD/SMT	VQFN-36		Reel, Cut Tape, MouseReel