Switching Controllers – Mouser Taiwan

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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 (TWD) 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 Wide In Non-Sync Buc k DC/DC Cntrlr TPS40200GDR Texas Instruments 1: NT$88.55 29,401In Stock	Mfr. Part # TPS40200GDR Mouser Part # 595-TPS40200GDR	Texas Instruments	Switching Controllers Wide In Non-Sync Buc k DC/DC Cntrlr	Datasheet	29,401In Stock	Cut Tape NT$88.55 NT$65.96 NT$60.23 NT$53.78 Reel NT$44.10 View NT$50.91 NT$49.11 NT$47.32 NT$43.02 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Buck	1 Output	35 kHz to 500 kHz	95 %	700 mV to 46 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers AUTO CAT WIDE-INPUT SYNCH BUCK TPS40051QPWPRQ1 Texas Instruments 1: NT$243.42 5,224In Stock	Mfr. Part # TPS40051QPWPRQ1 Mouser Part # 595-TPS40051QPWPRQ1	Texas Instruments	Switching Controllers AUTO CAT WIDE-INPUT SYNCH BUCK	Datasheet	5,224In Stock	Cut Tape NT$243.42 NT$186.78 NT$172.44 NT$157.02 View Reel NT$134.08 NT$149.49 NT$144.83 NT$143.40 NT$134.08 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Buck	1 Output	100 kHz to 1 MHz	85 %	700 mV to 35 V	20 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-16	AEC-Q100	Reel, Cut Tape, MouseReel
Switching Controllers Digitally enhanced power analog buck controller MCP19123T-E/MQ Microchip Technology 1: NT$214.02 3,299In Stock	Mfr. Part # MCP19123T-E/MQ Mouser Part # 579-MCP19123T-E/MQ	Microchip Technology	Switching Controllers Digitally enhanced power analog buck controller Learn More about Microchip Technology microchip mcp19122 mcp19123 controllers	Datasheet	3,299In Stock	Cut Tape NT$214.02 NT$178.53 Reel NT$162.04	Min.: 1 Mult.: 1 : 3,300	Buck	1 Output	100 kHz to 1.6 MHz	100 %	300 mV to 16 V	4 A	- 40 C	+ 125 C	SMD/SMT	QFN-28		Reel, Cut Tape
Switching Controllers Dual Output 2-Ph Syn ch Buck Cntrlr A 59 A 595-TPS5120DBT TPS5120DBTR Texas Instruments 1: NT$377.14 1,693In Stock	Mfr. Part # TPS5120DBTR Mouser Part # 595-TPS5120DBTR	Texas Instruments	Switching Controllers Dual Output 2-Ph Syn ch Buck Cntrlr A 59 A 595-TPS5120DBT	Datasheet	1,693In Stock	Cut Tape NT$377.14 NT$294.33 NT$273.89 NT$250.95 View Reel NT$217.25 NT$238.76 NT$234.10 NT$228.72 NT$217.25 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Buck	2 Output	100 kHz to 500 kHz	83 %	900 mV to 26 V	20 A	- 40 C	+ 85 C	SMD/SMT	TSSOP-30		Reel, Cut Tape, MouseReel
Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40D UCC38C40DR Texas Instruments 1: NT$33.34 3,965In Stock	Mfr. Part # UCC38C40DR Mouser Part # 595-UCC38C40DR	Texas Instruments	Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40D Learn More about Texas Instruments ti ucc28c4x q1 controllers	Datasheet	3,965In Stock	Cut Tape NT$33.34 NT$23.98 NT$21.62 NT$19.00 View Reel NT$15.09 NT$17.78 NT$17.03 NT$16.46 NT$15.09 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 Two-Phase Sync SD Sw itching Cntlr A 926 A 926-LM2642MTC/NOPB LM2642MTCX/NOPB Texas Instruments 1: NT$146.27 2,033In Stock	Mfr. Part # LM2642MTCX/NOPB Mouser Part # 926-LM2642MTCX/NOPB	Texas Instruments	Switching Controllers Two-Phase Sync SD Sw itching Cntlr A 926 A 926-LM2642MTC/NOPB	Datasheet	2,033In Stock	Cut Tape NT$146.27 NT$110.78 NT$101.81 NT$92.13 View Reel NT$78.15 NT$87.47 NT$86.76 NT$81.74 NT$78.15 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Buck	2 Output	60 kHz	98 %	1.3 V to 30 V	6 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-28		Reel, Cut Tape, MouseReel
Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT TPS51220RHBR Texas Instruments 1: NT$138.38 2,251In Stock	Mfr. Part # TPS51220RHBR Mouser Part # 595-TPS51220RHBR	Texas Instruments	Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT	Datasheet	2,251In Stock	Cut Tape NT$138.38 NT$117.59 NT$107.91 NT$97.51 View Reel NT$83.89 NT$92.49 NT$91.78 NT$86.40 NT$83.89 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 Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP TPS40077PWPR Texas Instruments 1: NT$148.06 2,047In Stock	Mfr. Part # TPS40077PWPR Mouser Part # 595-TPS40077PWPR	Texas Instruments	Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP	Datasheet	2,047In Stock	Cut Tape NT$148.06 NT$112.21 NT$103.25 NT$93.21 View Reel NT$77.44 NT$88.55 NT$87.83 NT$82.81 NT$77.44 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Buck	1 Output	1 MHz	93 %	700 mV	20 A	- 40 C	+ 85 C	SMD/SMT	HTSSOP-16		Reel, Cut Tape, MouseReel
Switching Controllers Sgl Sync SD Cntrlr A 595-TPS53014DGS A 5 A 595-TPS53014DGS TPS53014DGSR Texas Instruments 1: NT$108.63 2,148In Stock	Mfr. Part # TPS53014DGSR Mouser Part # 595-TPS53014DGSR	Texas Instruments	Switching Controllers Sgl Sync SD Cntrlr A 595-TPS53014DGS A 5 A 595-TPS53014DGS	Datasheet	2,148In Stock	Cut Tape NT$108.63 NT$81.02 NT$73.85 NT$66.32 Reel NT$56.64 View NT$62.74 NT$61.30 NT$58.08 NT$55.57 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Buck	1 Output	500 kHz	83 %	760 mV to 7 V	25 A	- 40 C	+ 85 C	SMD/SMT	MSOP-10		Reel, Cut Tape, MouseReel
Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK UCC38C43DGKR Texas Instruments 1: NT$84.25 3,981In Stock	Mfr. Part # UCC38C43DGKR Mouser Part # 595-UCC38C43DGKR	Texas Instruments	Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK Learn More about Texas Instruments ti ucc28c4x q1 controllers	Datasheet	3,981In Stock	Cut Tape NT$84.25 NT$62.38 NT$57.00 NT$50.91 View Reel NT$44.10 NT$48.04 NT$46.61 NT$44.45 NT$44.10 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	VSSOP-8		Reel, Cut Tape, MouseReel
Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1 LM25141QRGETQ1 Texas Instruments 1: NT$283.93 2,912In Stock	Mfr. Part # LM25141QRGETQ1 Mouser Part # 595-LM25141QRGETQ1	Texas Instruments	Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1 Learn More about Texas Instruments ti lm25141 controller	Datasheet	2,912In Stock	Cut Tape NT$283.93 NT$219.76 NT$203.63 NT$186.06 Reel NT$162.40 View NT$159.17 NT$157.02 NT$155.23 MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	2.2 MHz	99 %	1.5 V to 15 V	20 A	- 40 C	+ 150 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-TPS64202DBVT TPS64202DBVR Texas Instruments 1: NT$62.74 2,520In Stock	Mfr. Part # TPS64202DBVR Mouser Part # 595-TPS64202DBVR	Texas Instruments	Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64202DBVT	Datasheet	2,520In Stock	Cut Tape NT$62.74 NT$46.25 NT$41.94 NT$37.64 Reel NT$31.33 View NT$35.13 NT$33.81 NT$32.70 NT$30.65 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	550 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 High Perf Sync Buck Cntrlr A 926-LM27402 A 926-LM27402MH/NOPB LM27402MHX/NOPB Texas Instruments 1: NT$121.17 2,190In Stock	Mfr. Part # LM27402MHX/NOPB Mouser Part # 926-LM27402MHX/NOPB	Texas Instruments	Switching Controllers High Perf Sync Buck Cntrlr A 926-LM27402 A 926-LM27402MH/NOPB	Datasheet	2,190In Stock	Cut Tape NT$121.17 NT$102.53 NT$93.93 NT$84.25 Reel NT$72.78 View NT$79.59 NT$77.79 NT$73.85 NT$71.34 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Buck	1 Output	200 kHz to 1.2 MHz	95 %	600 mV to 18.6 V	30 A	- 40 C	+ 125 C	SMD/SMT	HTSSOP-16		Reel, Cut Tape, MouseReel
Switching Controllers Wide Input Range Syn c Buck Cntlr A 926- A 926-LM5117PMH/NOPB LM5117PMHE/NOPB Texas Instruments 1: NT$267.44 453In Stock	Mfr. Part # LM5117PMHE/NOPB Mouser Part # 595-LM5117PMHE/NOPB	Texas Instruments	Switching Controllers Wide Input Range Syn c Buck Cntlr A 926- A 926-LM5117PMH/NOPB	Datasheet	453In Stock	Cut Tape NT$267.44 NT$206.50 NT$191.08 NT$174.23 Reel NT$153.44 View NT$153.08 NT$148.78 MouseReel Available	Min.: 1 Mult.: 1 : 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		Reel, Cut Tape, MouseReel
Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3802D UCC3802DTR Texas Instruments 1: NT$90.34 3,386In Stock	Mfr. Part # UCC3802DTR Mouser Part # 595-UCC3802DTR	Texas Instruments	Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3802D	Datasheet	3,386In Stock	Cut Tape NT$90.34 NT$67.04 NT$61.30 NT$54.85 View Reel NT$44.81 NT$51.98 NT$50.19 NT$48.40 NT$44.81 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	5 V	1 A	0 C	+ 70 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTCX/NOPB LM2737MTC/NOPB Texas Instruments 1: NT$98.23 1,085In Stock	Mfr. Part # LM2737MTC/NOPB Mouser Part # 926-LM2737MTC/NOPB	Texas Instruments	Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTCX/NOPB	Datasheet	1,085In Stock	NT$98.23 NT$73.13 NT$60.59 NT$57.36 View NT$56.28 NT$54.13 NT$52.70 NT$50.91 NT$49.83	Min.: 1 Mult.: 1	Buck	1 Output	2 MHz	90 %	600 mV to 5 V	20 A	- 40 C	+ 125 C	SMD/SMT	TSSOP-14		Tube
Switching Controllers High Speed PWM Contr oller UC2823AN Texas Instruments 1: NT$1,228.94 70In Stock	Mfr. Part # UC2823AN Mouser Part # 595-UC2823AN	Texas Instruments	Switching Controllers High Speed PWM Contr oller	Datasheet	70In Stock	NT$1,228.94 NT$994.84 NT$936.40 NT$897.68 NT$841.40	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	2 Output	1 MHz	100 %	5.1 V	2 A	- 40 C	+ 85 C	Through Hole	PDIP-16		Tube
Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-3 UCC3813DTR-3 Texas Instruments 1: NT$79.23 1,913In Stock	Mfr. Part # UCC3813DTR-3 Mouser Part # 595-UCC3813DTR-3	Texas Instruments	Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-3	Datasheet	1,913In Stock	Cut Tape NT$79.23 NT$58.79 NT$53.42 NT$48.04 Reel NT$40.15 View NT$45.17 NT$43.74 NT$41.94 NT$38.72 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	4.1 V	1 A	0 C	+ 70 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers Monolithic SMPS Controller MIC38C43YM-TR Microchip Technology 1: NT$45.89 2,182In Stock	Mfr. Part # MIC38C43YM-TR Mouser Part # 998-MIC38C43YMTR	Microchip Technology	Switching Controllers Monolithic SMPS Controller	Datasheet	2,182In Stock	Cut Tape NT$45.89 NT$45.17 Reel NT$38.00 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Boost, Buck, Flyback, Forward	1 Output	500 kHz	96 %	5 V	500 mA	- 40 C	+ 85 C	SMD/SMT	SOIC-8		Reel, Cut Tape, MouseReel
Switching Controllers COOLSET ICE5AR3995BZXKLA1 Infineon Technologies 1: NT$59.51 1,680In Stock	Mfr. Part # ICE5AR3995BZXKLA1 Mouser Part # 726-ICE5AR3995BZXKLA	Infineon Technologies	Switching Controllers COOLSET Learn More about Infineon Technologies infineon fixed frequency coolset	Datasheet	1,680In Stock	NT$59.51 NT$43.74 NT$37.28 NT$35.28 View NT$33.20 NT$31.94 NT$30.87 NT$29.68 NT$29.00	Min.: 1 Mult.: 1	Buck, Flyback	1 Output	65 kHz	80 %	15 V		- 40 C	+ 150 C	Through Hole	DIP-7		Tube
Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCT TPS40305DRCR Texas Instruments 1: NT$86.04 2,558In Stock	Mfr. Part # TPS40305DRCR Mouser Part # 595-TPS40305DRCR	Texas Instruments	Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCT	Datasheet	2,558In Stock	Cut Tape NT$86.04 NT$63.45 NT$58.08 NT$51.62 Reel NT$44.10 View NT$48.76 NT$47.32 NT$45.53 NT$43.02 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	1.2 MHz	85 %	600 mV to 17 V	25 A	- 40 C	+ 125 C	SMD/SMT	VSON-10		Reel, Cut Tape, MouseReel
Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C42DGKR UCC38C42DGK Texas Instruments 1: NT$143.76 955In Stock	Mfr. Part # UCC38C42DGK Mouser Part # 595-UCC38C42DGK	Texas Instruments	Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C42DGKR Learn More about Texas Instruments ti ucc28c4x q1 controllers	Datasheet	955In Stock	NT$143.76 NT$107.19 NT$97.87 NT$87.47 View NT$82.81 NT$80.66 NT$76.72 NT$74.57 NT$73.13	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	18 V	1 A	0 C	+ 70 C	SMD/SMT	VSSOP-8		Tube
Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start MIC2128YML-TR Microchip Technology 1: NT$55.57 5,204In Stock	Mfr. Part # MIC2128YML-TR Mouser Part # 579-MIC2128YML-TR	Microchip Technology	Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start Learn More about Microchip Technology microchip mic2128 buck controller	Datasheet	5,204In Stock	Cut Tape NT$55.57 NT$54.85 Reel NT$46.25	Min.: 1 Mult.: 1 : 5,000	Buck	1 Output	270 kHz to 800 kHz	85 %	600 mV to 30 V		- 40 C	+ 125 C	SMD/SMT	VQFN-16		Reel, Cut Tape
Switching Controllers 16V Step-Down DCDC Controller XC9221A09AMR-G Torex Semiconductor 1: NT$48.40 2,750In Stock	Mfr. Part # XC9221A09AMR-G Mouser Part # 865-XC9221A09AMR-G	Torex Semiconductor	Switching Controllers 16V Step-Down DCDC Controller Learn More about Torex Semiconductor torex xc92x dc dc step down controller ics	Datasheet	2,750In Stock	Cut Tape NT$48.40 NT$35.42 NT$31.98 NT$28.29 Reel NT$23.66 View NT$26.49 NT$25.45 NT$24.63 NT$23.16 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Buck	1 Output	1 MHz	100 %	1.2 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOT-25-5		Reel, Cut Tape, MouseReel
Switching Controllers 4.5-42V Wide Vin Cu rrent Mode Dual Sync A 926-LM25119PSQE/NOPB LM25119PSQ/NOPB Texas Instruments 1: NT$263.50 1,279In Stock	Mfr. Part # LM25119PSQ/NOPB Mouser Part # 926-LM25119PSQ/NOPB	Texas Instruments	Switching Controllers 4.5-42V Wide Vin Cu rrent Mode Dual Sync A 926-LM25119PSQE/NOPB	Datasheet	1,279In Stock	Cut Tape NT$263.50 NT$210.44 NT$196.46 NT$178.17 View Reel NT$167.42 NT$171.72 NT$167.42 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Buck	2 Output	50 kHz to 750 kHz	95 %	800 mV to 41.3 V	40 A	- 40 C	+ 125 C	SMD/SMT	WQFN-32		Reel, Cut Tape, MouseReel