Switching Controllers – Mouser United Kingdom

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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 (GBP) 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 Monolithic SMPS Controller MIC38C43YN Microchip Technology 1: £1.20 323In Stock	Mfr. Part No. MIC38C43YN Mouser Part No 998-MIC38C43YN	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	323In Stock	£1.20 £1.00 £0.908	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 75V, Dual Phase Advanced COT PWM Controller MIC2133YML-TR Microchip Technology 1: £1.96 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 £1.96 £1.66 Reel £1.49	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 AC Low Iq dual Sync Buck Cntrlr TPS43351QDAPRQ1 Texas Instruments 1: £3.83 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 £3.83 £3.26 £3.00 £2.72 View Reel £2.44 £2.59 £2.51 £2.48 £2.44 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 Auto Cat Tr Synch Bu ck Controller TPS5130QPTRQ1 Texas Instruments 1: £8.80 993In Stock	Mfr. Part No. TPS5130QPTRQ1 Mouser Part No 595-TPS5130QPTRQ1	Texas Instruments	Switching Controllers Auto Cat Tr Synch Bu ck Controller	Datasheet	993In Stock	Cut Tape £8.80 £6.89 £6.41 £5.88 Reel £5.36 View £5.83 £5.49 £5.07 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Buck	4 Output	50 kHz to 500 kHz	97 %	900 mV to 8.5 V	15 A	- 40 C	+ 125 C	SMD/SMT	LQFP-48	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Low-Voltage Synchron ous Buck Controller LM1771SSD/NOPB Texas Instruments 1: £1.89 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 £1.89 £1.41 £1.28 £1.15 Reel £0.995 View £1.09 £1.05 £0.96 £0.943 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: £3.23 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 £3.23 £2.72 £2.51 £2.26 View Reel £1.91 £2.15 £2.13 £2.01 £1.91 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: £5.07 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 £5.07 £3.88 £3.59 £3.27 Reel £3.25 View £2.98 £2.92 £2.90 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: £1.32 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 £1.32 £0.969 £0.882 £0.78 Reel £0.656 View £0.737 £0.708 £0.705 £0.642 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: £0.743 2,716In 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	2,716In Stock	Cut Tape £0.743 £0.533 £0.48 £0.423 Reel £0.346 View £0.395 £0.378 £0.367 £0.325 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 UC3843D Texas Instruments 1: £1.45 732In Stock	Mfr. Part No. UC3843D Mouser Part No 595-UC3843D	Texas Instruments	Switching Controllers Current Mode	Datasheet	732In Stock	£1.45 £1.07 £0.908 £0.863 View £0.818 £0.78 £0.759 £0.734 £0.718	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-14		Tube
Switching Controllers High Speed PWM Contr oller A 595-UC2823D A 595-UC2823DWTR UC2823DW Texas Instruments 1: £5.89 199In Stock	Mfr. Part No. UC2823DW Mouser Part No 595-UC2823DW	Texas Instruments	Switching Controllers High Speed PWM Contr oller A 595-UC2823D A 595-UC2823DWTR	Datasheet	199In Stock	£5.89 £4.56 £4.09 £3.58 View £3.50 £3.41 £3.30	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	5.1 V	2 A	- 25 C	+ 85 C	SMD/SMT	SOIC-16		Tube
Switching Controllers High Efficiency Synchronous Buck Controller MIC2182-3.3YM Microchip Technology 1: £3.47 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	£3.47 £2.92	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 Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR UC3842AD8TRG4 Texas Instruments 1: £0.736 2,896In 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	2,896In Stock	Cut Tape £0.736 £0.524 £0.472 £0.416 Reel £0.343 View £0.388 £0.372 £0.36 £0.335 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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD UC3842ADTR Texas Instruments 1: £0.943 1,971In Stock	Mfr. Part No. UC3842ADTR Mouser Part No 595-UC3842ADTR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD	Datasheet	1,971In Stock	Cut Tape £0.943 £0.687 £0.622 £0.55 Reel £0.459 View £0.516 £0.496 £0.475 £0.442 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 BiCMOS Low-Power Cur rent Mode ALT 595-U ALT 595-UCC38C42DR UCC38C42DRG4 Texas Instruments 1: £0.803 1,613In Stock	Mfr. Part No. UCC38C42DRG4 Mouser Part No 595-UCC38C42DRG4	Texas Instruments	Switching Controllers BiCMOS Low-Power Cur rent Mode ALT 595-U ALT 595-UCC38C42DR Learn More about Texas Instruments ti ucc28c4x q1 controllers	Datasheet	1,613In Stock	Cut Tape £0.803 £0.578 £0.52 £0.458 Reel £0.378 View £0.428 £0.41 £0.396 £0.369 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	18 V	1 A	0 C	+ 70 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB LM2745MTCX/NOPB Texas Instruments 1: £2.30 834In Stock	Mfr. Part No. LM2745MTCX/NOPB Mouser Part No 926-LM2745MTCX/NOPB	Texas Instruments	Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB	Datasheet	834In Stock	Cut Tape £2.30 £1.72 £1.58 £1.42 Reel £1.19 View £1.34 £1.32 £1.26 £1.17 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	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		Reel, Cut Tape, MouseReel
Switching Controllers Emulated Peak Crnt M ode Buck Cntlr A 92 A 926-LM3495MTCX/NOPB LM3495MTC/NOPB Texas Instruments 1: £4.05 340In Stock	Mfr. Part No. LM3495MTC/NOPB Mouser Part No 926-LM3495MTC/NOPB	Texas Instruments	Switching Controllers Emulated Peak Crnt M ode Buck Cntlr A 92 A 926-LM3495MTCX/NOPB	Datasheet	340In Stock	£4.05 £3.08 £2.76 £2.56 View £2.26 £2.25 Quote	Min.: 1 Mult.: 1	Buck	1 Output	200 kHz to 1.5 MHz	80 %	600 mV to 5.5 V	10 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-16		Tube
Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT TPS51220RHBR Texas Instruments 1: £2.90 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 £2.90 £2.46 £2.26 £2.04 View Reel £1.75 £1.94 £1.92 £1.81 £1.75 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 Monolithic SMPS Controller MIC38C42-1YM Microchip Technology 1: £2.71 196In Stock	Mfr. Part No. MIC38C42-1YM Mouser Part No 998-MIC38C42-1YM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	196In Stock	£2.71 £2.28 £2.07	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: £1.90 87In Stock	Mfr. Part No. MIC38C42AYM Mouser Part No 998-MIC38C42AYM	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	87In Stock	£1.90 £1.59 £1.44	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 40V Dual Low IQ, 100 DC Sync Buck CTL LTC7805RUFDM#PBF Analog Devices 1: £6.30 1,458In Stock	Mfr. Part No. LTC7805RUFDM#PBF Mouser Part No 584-LTC7805RUFDMPBF	Analog Devices	Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL Learn More about Analog Devices adi ltc7805 step down controller	Datasheet	1,458In Stock	£6.30 £4.87 £4.26 £4.10 View £3.88 £3.83 £3.77	Min.: 1 Mult.: 1 Max.: 1,166	Boost, Buck	2 Output	3 MHz	100 %	800 mV to 40 V	180 uA	- 40 C	+ 150 C	SMD/SMT	QFN-28		Tube
Switching Controllers 40V, High-Performance, Synchronous Buck MAX15046BAEE+ Analog Devices / Maxim Integrated 1: £4.53 954In Stock	Mfr. Part No. MAX15046BAEE+ Mouser Part No 700-MAX15046BAEE	Analog Devices / Maxim Integrated	Switching Controllers 40V, High-Performance, Synchronous Buck	Datasheet	954In Stock	£4.53 £3.47 £3.21 £2.92 View £2.78 £2.70	Min.: 1 Mult.: 1 Max.: 763	Buck	1 Output	100 kHz to 1 MHz	87.5 %	600 mV to 36 V	25 A	- 40 C	+ 125 C	SMD/SMT	QSOP-16		Tube
Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle, MAX1626ESA+T Analog Devices / Maxim Integrated 1: £4.16 2,404In Stock	Mfr. Part No. MAX1626ESA+T Mouser Part No 700-MAX1626ESAT	Analog Devices / Maxim Integrated	Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,	Datasheet	2,404In Stock	Cut Tape £4.16 £3.18 £2.87 £2.65 View £2.52 £2.44 £2.42 £2.42 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,923	Buck	1 Output	300 kHz	100 %	3.3 V, 5 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOIC-Narrow-8		Reel, Cut Tape, MouseReel
Switching Controllers Low-Cost, Small, 4.5V to 28V Wide Operat MAX15026CATD+T Analog Devices / Maxim Integrated 1: £4.05 1,000In Stock	Mfr. Part No. MAX15026CATD+T Mouser Part No 700-MAX15026CATD+T	Analog Devices / Maxim Integrated	Switching Controllers Low-Cost, Small, 4.5V to 28V Wide Operat	Datasheet	1,000In Stock	Cut Tape £4.05 £3.06 £2.81 £2.54 View £2.40 £2.38 £2.38 MouseReel Available	Min.: 1 Mult.: 1 Max.: 800	Buck	1 Output	200 kHz to 2 MHz	88 %	600 mV to 28 V	15 A	- 40 C	+ 125 C	SMD/SMT	TDFN-EP-14		Reel, Cut Tape, MouseReel
Switching Controllers Low-Cost, Wide Input Range, Step-Down Co MAX8546EUB+T Analog Devices / Maxim Integrated 1: £3.95 1,352In Stock	Mfr. Part No. MAX8546EUB+T Mouser Part No 700-MAX8546EUBT	Analog Devices / Maxim Integrated	Switching Controllers Low-Cost, Wide Input Range, Step-Down Co	Datasheet	1,352In Stock	Cut Tape £3.95 £3.02 £2.78 £2.51 View £2.38 £2.32 £2.29 £2.29 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1,081	Buck	1 Output	300 kHz	95 %	800 mV to 23 V	15 A	- 40 C	+ 85 C	SMD/SMT	UMAX-10		Reel, Cut Tape, MouseReel