Switching Controllers – Mouser Finland

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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 (EUR) 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 CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS NCV30161MNWTXG onsemi 1: 1,41 € 2 910In Stock	Mfr. Part No. NCV30161MNWTXG Mouser Part No 863-NCV30161MNWTXG	onsemi	Switching Controllers CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS Learn More about onsemi energy storage solutions	Datasheet	2 910In Stock	Cut Tape 1,41 € 1,03 € 0,937 € 0,832 € Reel 0,695 € View 0,782 € 0,751 € 0,742 € 0,68 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000	Buck	1 Output	2.4 MHz	100 %	1.36 V		- 40 C	+ 125 C	SMD/SMT	DFNW-10		Reel, Cut Tape, MouseReel
Switching Controllers High Efficiency Synchronous Buck Controller MIC2182-3.3YM Microchip Technology 1: 3,98 € 96In Stock	Mfr. Part No. MIC2182-3.3YM Mouser Part No 998-MIC2182-3.3YM	Microchip Technology	Switching Controllers High Efficiency Synchronous Buck Controller	Datasheet	96In Stock	3,98 € 3,34 €	Min.: 1 Mult.: 1	Buck	5 Output	330 kHz	86 %	3.3 V	20 A	- 40 C	+ 85 C	SMD/SMT	SOP-16		Tube
Switching Controllers Monolithic SMPS Controller MIC38C43YN Microchip Technology 1: 1,38 € 319In Stock	Mfr. Part No. MIC38C43YN Mouser Part No 998-MIC38C43YN	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	319In Stock	1,38 € 1,15 € 1,04 €	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	Through Hole	DIP-8		Tube
Switching Controllers 500KHz Synchronous Buck Controller MIC2169AYMM Microchip Technology 1: 2,39 € 89In Stock	Mfr. Part No. MIC2169AYMM Mouser Part No 998-MIC2169AYMM	Microchip Technology	Switching Controllers 500KHz Synchronous Buck Controller	Datasheet	89In Stock	2,39 € 1,99 €	Min.: 1 Mult.: 1	Buck	1 Output	500 kHz	92 %	800 mV		- 40 C	+ 125 C	SMD/SMT	MSOP-10		Tube
Switching Controllers Monolithic SMPS Controller MIC38C42-1YM Microchip Technology 1: 3,10 € 196In Stock	Mfr. Part No. MIC38C42-1YM Mouser Part No 998-MIC38C42-1YM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	196In Stock	3,10 € 2,61 € 2,37 €	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	SOIC-14		Tube
Switching Controllers Monolithic SMPS Controller MIC38C42AYM Microchip Technology 1: 2,18 € 87In Stock	Mfr. Part No. MIC38C42AYM Mouser Part No 998-MIC38C42AYM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	87In Stock	2,18 € 1,82 € 1,65 €	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
Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT TPS51220RHBR Texas Instruments 1: 3,74 € 2 251In Stock	Mfr. Part No. TPS51220RHBR Mouser Part No 595-TPS51220RHBR	Texas Instruments	Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT	Datasheet	2 251In Stock	Cut Tape 3,74 € 2,82 € 2,59 € 2,34 € View Reel 2,01 € 2,22 € 2,20 € 2,07 € 2,01 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000	Buck	2 Output	200 kHz to 1 MHz	99 %	1 V to 12 V	20 A	- 40 C	+ 85 C	SMD/SMT	VQFN-32		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D UC3842DTR Texas Instruments 1: 1,30 € 1 918In Stock	Mfr. Part No. UC3842DTR Mouser Part No 595-UC3842DTR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D	Datasheet	1 918In Stock	Cut Tape 1,30 € 0,946 € 0,858 € 0,762 € Reel 0,626 € View 0,716 € 0,688 € 0,68 € 0,623 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-14		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842N UC3842NG4 Texas Instruments 1: 1,90 € 891In Stock	Mfr. Part No. UC3842NG4 Mouser Part No 595-UC3842NG4	Texas Instruments	Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842N	Datasheet	891In Stock	1,90 € 1,41 € 1,26 € 1,13 € View 1,07 € 0,875 €	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	Through Hole	PDIP-8		Tube
Switching Controllers Two-Phase Sync SD Sw itching Cntlr LM2642MTC/NOPB Texas Instruments 1: 4,46 € 363In Stock	Mfr. Part No. LM2642MTC/NOPB Mouser Part No 926-LM2642MTC/NOPB	Texas Instruments	Switching Controllers Two-Phase Sync SD Sw itching Cntlr	Datasheet	363In Stock	4,46 € 3,40 € 2,68 € 2,55 € View 2,53 € 2,52 € 2,49 € 2,47 €	Min.: 1 Mult.: 1	Buck	2 Output	300 kHz	98 %	1.3 V to 30 V	20 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-28		Tube
Switching Controllers High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB LM3743MM-300/NOPB Texas Instruments 1: 2,22 € 986In Stock	Mfr. Part No. LM3743MM-300/NOPB Mouser Part No 926-LM3743MM300NOPB	Texas Instruments	Switching Controllers High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB	Datasheet	986In Stock	Cut Tape 2,22 € 1,65 € 1,51 € 1,35 € Reel 1,18 € View 1,28 € 1,24 € 1,11 € 1,10 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	Buck	1 Output	300 kHz	91 %	800 mV to 4.6 V	20 A	- 40 C	+ 125 C	SMD/SMT	MSOP-10		Reel, Cut Tape, MouseReel
Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd TPS40074RHLR Texas Instruments 1: 3,35 € 2 626In Stock	Mfr. Part No. TPS40074RHLR Mouser Part No 595-TPS40074RHLR	Texas Instruments	Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd	Datasheet	2 626In Stock	Cut Tape 3,35 € 2,55 € Reel 2,55 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000	Buck	1 Output	100 kHz to 1 MHz	95 %	700 mV to 23 V	20 A	- 40 C	+ 85 C	SMD/SMT	VQFN-20		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode NB Sys Pwr Controller TPS51220ATRTVRQ1 Texas Instruments 1: 4,41 € 2 517In Stock	Mfr. Part No. TPS51220ATRTVRQ1 Mouser Part No 595-TPS51220ATRTVRQ1	Texas Instruments	Switching Controllers Current-Mode NB Sys Pwr Controller	Datasheet	2 517In Stock	Cut Tape 4,41 € 3,33 € 3,05 € 2,76 € View Reel 2,43 € 2,61 € 2,60 € 2,44 € 2,43 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000	Buck	2 Output	200 kHz to 1 MHz	99 %	1 V to 12 V	20 A	- 40 C	+ 85 C	SMD/SMT	WQFN-32	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR UC3842AD8TRG4 Texas Instruments 1: 0,843 € 2 711In Stock	Mfr. Part No. UC3842AD8TRG4 Mouser Part No 595-UC3842AD8TRG4	Texas Instruments	Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR	Datasheet	2 711In Stock	Cut Tape 0,843 € 0,60 € 0,541 € 0,476 € Reel 0,393 € View 0,445 € 0,426 € 0,412 € 0,384 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers 75V, Dual Phase Advanced COT PWM Controller MIC2133YML-TR Microchip Technology 1: 2,11 € 3 571In Stock	Mfr. Part No. MIC2133YML-TR Mouser Part No 494-MIC2133YML-TR	Microchip Technology	Switching Controllers 75V, Dual Phase Advanced COT PWM Controller Learn More about Microchip Technology microchip mic2133 controllers	Datasheet	3 571In Stock	Cut Tape 2,11 € 1,90 € 1,89 € 1,87 € 1,81 € Reel 1,69 €	Min.: 1 Mult.: 1 : 3 300	Buck	1 Output	100 kHz to 1 MHz	85 %	600 mV to 28 V	100 mA	- 40 C	+ 125 C	SMD/SMT	VQFN-32		Reel, Cut Tape
Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR TPS40077PWP Texas Instruments 1: 4,65 € 379In Stock	Mfr. Part No. TPS40077PWP Mouser Part No 595-TPS40077PWP	Texas Instruments	Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR	Datasheet	379In Stock	4,65 € 3,54 € 3,06 € 2,93 € View 2,81 € 2,72 € 2,68 € 2,64 € Quote	Min.: 1 Mult.: 1	Buck	1 Output	1 MHz	93 %	700 mV	20 A	- 40 C	+ 85 C	SMD/SMT	HTSSOP-16		Tube
Switching Controllers AC Low Iq dual Sync Buck Cntrlr TPS43351QDAPRQ1 Texas Instruments 1: 5,52 € 1 850In Stock	Mfr. Part No. TPS43351QDAPRQ1 Mouser Part No 595-TPS43351QDAPRQ1	Texas Instruments	Switching Controllers AC Low Iq dual Sync Buck Cntrlr	Datasheet	1 850In Stock	Cut Tape 5,52 € 4,23 € 3,91 € 3,56 € View Reel 3,21 € 3,39 € 3,29 € 3,25 € 3,21 € MouseReel Available	Min.: 1 Mult.: 1 : 2 000	Buck	2 Output	150 kHz to 600 kHz	98.75 %	5 V	6 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-38	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Low-Voltage Synchron ous Buck Controller LM1771SSD/NOPB Texas Instruments 1: 2,16 € 597In Stock	Mfr. Part No. LM1771SSD/NOPB Mouser Part No 926-LM1771SSD/NOPB	Texas Instruments	Switching Controllers Low-Voltage Synchron ous Buck Controller	Datasheet	597In Stock	Cut Tape 2,16 € 1,61 € 1,47 € 1,32 € Reel 1,13 € View 1,25 € 1,20 € 1,08 € MouseReel Available	Min.: 1 Mult.: 1 : 1 000	Buck	1 Output	100 kHz to 1 MHz	95 %	800 mV to 4.5 V	6 A	- 40 C	+ 125 C	SMD/SMT	WSON-6		Reel, Cut Tape, MouseReel
Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b LM25141QURGERQ1 Texas Instruments 1: 4,48 € 3 988In Stock	Mfr. Part No. LM25141QURGERQ1 Mouser Part No 595-LM25141QURGERQ1	Texas Instruments	Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b Learn More about Texas Instruments ti lm25141 controller	Datasheet	3 988In Stock	Cut Tape 4,48 € 3,41 € 3,14 € 2,85 € View Reel 2,56 € 2,71 € 2,62 € 2,59 € 2,56 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000	Buck	1 Output	440 kHz, 4.4 MHz	99 %	3.3 V, 5 V, 1.5 V to 15 V	30 A	- 40 C	+ 150 C	SMD/SMT	VQFN-24		Reel, Cut Tape, MouseReel
Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM5141RGER LM5141RGET Texas Instruments 1: 5,91 € 200In Stock	Mfr. Part No. LM5141RGET Mouser Part No 595-LM5141RGET	Texas Instruments	Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM5141RGER Learn More about Texas Instruments ti lm5141 controllers	Datasheet	200In Stock	Cut Tape 5,91 € 4,55 € 4,21 € 4,19 € Reel 3,73 € View 3,72 € 3,67 € Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	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	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT TPS64201DBVR Texas Instruments 1: 1,51 € 1 246In Stock	Mfr. Part No. TPS64201DBVR Mouser Part No 595-TPS64201DBVR	Texas Instruments	Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT	Datasheet	1 246In Stock	Cut Tape 1,51 € 1,11 € 1,01 € 0,894 € Reel 0,752 € View 0,844 € 0,811 € 0,807 € 0,74 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000	Buck	1 Output	450 kHz	100 %	1.2 V to 6.5 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOT-23-6		Reel, Cut Tape, MouseReel
Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD UC3843ADTR Texas Instruments 1: 0,507 € 2 381In Stock	Mfr. Part No. UC3843ADTR Mouser Part No 595-UC3843ADTR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD	Datasheet	2 381In Stock	Cut Tape 0,507 € 0,359 € 0,35 € Reel 0,35 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-14		Reel, Cut Tape, MouseReel
Switching Controllers L IQ, 38V Sync Boost+Buck Cntr LTC7812IUH#PBF Analog Devices 1: 7,45 € 475In Stock	Mfr. Part No. LTC7812IUH#PBF Mouser Part No 584-LTC7812IUH#PBF	Analog Devices	Switching Controllers L IQ, 38V Sync Boost+Buck Cntr Learn More about Analog Devices adi ltc781 controllers	Datasheet	475In Stock	7,45 € 7,28 € 7,25 €	Min.: 1 Mult.: 1	Boost, Buck	2 Output	850 kHz	100 %	800 mV to 60 V	20 A	- 40 C	+ 125 C	SMD/SMT	QFN-32		Tube
Switching Controllers GSM Power Management System ADP1972ARUZ-R7 Analog Devices 1: 6,52 € 999In Stock	Mfr. Part No. ADP1972ARUZ-R7 Mouser Part No 584-ADP1972ARUZ-R7	Analog Devices	Switching Controllers GSM Power Management System Learn More about Analog Devices adi adp1972 pwm controller	Datasheet	999In Stock	Cut Tape 6,52 € 6,37 € 6,34 € 6,34 € MouseReel Available	Min.: 1 Mult.: 1	Boost, Buck	1 Output	300 kHz	98 %		5 mA	- 40 C	+ 125 C	SMD/SMT	TSSOP-16		Reel, Cut Tape, MouseReel
Switching Controllers Low-Dropout, Wide-Input-Voltage, Step-Do MAX8598ETE+ Analog Devices / Maxim Integrated 1: 12,73 € 422In Stock	Mfr. Part No. MAX8598ETE+ Mouser Part No 700-MAX8598ETE	Analog Devices / Maxim Integrated	Switching Controllers Low-Dropout, Wide-Input-Voltage, Step-Do	Datasheet	422In Stock	12,73 € 9,97 € 9,28 € 8,51 € View 8,43 € 7,93 € 7,76 € Quote	Min.: 1 Mult.: 1	Buck	1 Output	200 kHz to 1.4 MHz	99.5 %	600 mV to 28 V	20 A	- 40 C	+ 85 C	SMD/SMT	TQFN-16		Tube