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	Packaging
Switching Controllers Automotive 75-V sync hronous buck DC/DC LM5145QRGYRQ1 Texas Instruments 1: 33,79 kr. 39In Stock 3.000Expected 23/08/2027	Mfr. Part No. LM5145QRGYRQ1 Mouser Part No 595-LM5145QRGYRQ1	Texas Instruments	Switching Controllers Automotive 75-V sync hronous buck DC/DC Learn More about Texas Instruments ti lm5145 q1 controllers	Datasheet	39In Stock 3.000Expected 23/08/2027	Cut Tape 33,79 kr. 25,74 kr. 23,72 kr. 21,48 kr. View Reel 18,95 kr. 20,52 kr. 19,32 kr. 18,95 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Buck	1 Output	100 kHz to 1 MHz	99 %	800 mV to 60 V	30 A	- 40 C	+ 150 C	SMD/SMT	VQFN-20	Reel, Cut Tape, MouseReel
Switching Controllers 75V Synchronous Buck Controller With Wid A 595-LM5145RGYR LM5145RGYT Texas Instruments 1: 38,49 kr. 41In Stock 4.000On Order	Mfr. Part No. LM5145RGYT Mouser Part No 595-LM5145RGYT	Texas Instruments	Switching Controllers 75V Synchronous Buck Controller With Wid A 595-LM5145RGYR Learn More about Texas Instruments ti lm5145 q1 controllers	Datasheet	41In Stock 4.000On Order On Order Ship Dates Mfr. No: LM5145RGYT Stock: 41 Can Dispatch Immediately On Order: 2.250 Expected 15/03/2027 1.750 Expected 17/05/2027 Factory Lead Time: 26 Weeks	Cut Tape 38,49 kr. 29,32 kr. 27,01 kr. 24,54 kr. Reel 23,28 kr. View 22,60 kr. 22,23 kr. 22,01 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	100 kHz to 1 MHz	99 %	800 mV to 60 V	30 A	- 40 C	+ 125 C	SMD/SMT	VQFN-20	Reel, Cut Tape, MouseReel
Switching Controllers 3-V to 36-V 4-A lo w -noise synchronous LM61440AANRJRR Texas Instruments 1: 31,26 kr. 53In Stock 9.000On Order	Mfr. Part No. LM61440AANRJRR Mouser Part No 595-LM61440AANRJRR	Texas Instruments	Switching Controllers 3-V to 36-V 4-A lo w -noise synchronous Learn More about Texas Instruments ti lm61440 step down converter	Datasheet	53In Stock 9.000On Order On Order Ship Dates Mfr. No: LM61440AANRJRR Stock: 53 Can Dispatch Immediately On Order: 6.000 Expected 19/08/2027 3.000 Expected 27/09/2027 Factory Lead Time: 26 Weeks	Cut Tape 31,26 kr. 23,72 kr. 21,86 kr. 19,84 kr. View Reel 16,93 kr. 18,95 kr. 18,87 kr. 18,28 kr. 16,93 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Buck	1 Output	200 kHz to 2.2 MHz	98 %	1 V to 34 V	4 A	- 40 C	+ 150 C	SMD/SMT		Reel, Cut Tape, MouseReel
Switching Controllers Low Input 2.25V-5.5V 300 kHz Frequency A A 595-TPS40000DGQR TPS40000DGQ Texas Instruments 1: 23,42 kr. 199In Stock	Mfr. Part No. TPS40000DGQ Mouser Part No 595-TPS40000DGQ	Texas Instruments	Switching Controllers Low Input 2.25V-5.5V 300 kHz Frequency A A 595-TPS40000DGQR	Datasheet	199In Stock	23,42 kr. 17,46 kr. 15,96 kr. 14,25 kr. View 13,50 kr. 12,61 kr. 12,16 kr. 11,79 kr. 11,64 kr.	Min.: 1 Mult.: 1	Buck	1 Output	350 kHz	97 %	700 mV	8 mA	- 40 C	+ 85 C	SMD/SMT	MSOP-PowerPad-10	Tube
Switching Controllers Enhanced Prod Synch Buck Controller A 59 A 595-TPS40021MPWPREP TPS40021MPWPEP Texas Instruments 1: 101,53 kr. 31In Stock	Mfr. Part No. TPS40021MPWPEP Mouser Part No 595-TPS40021MPWPEP	Texas Instruments	Switching Controllers Enhanced Prod Synch Buck Controller A 59 A 595-TPS40021MPWPREP	Datasheet	31In Stock	101,53 kr. 79,52 kr. 74,00 kr. 65,72 kr.	Min.: 1 Mult.: 1	Buck	1 Output	100 kHz to 1 MHz	95 %	1.5 V	20 A	- 55 C	+ 125 C	SMD/SMT	HTSSOP-16	Tube
Switching Controllers Wide Input Synch Buc k Controller A 595- A 595-TPS40075RHLR TPS40075RHLT Texas Instruments 1: 37,90 kr. 129In Stock	Mfr. Part No. TPS40075RHLT Mouser Part No 595-TPS40075RHLT	Texas Instruments	Switching Controllers Wide Input Synch Buc k Controller A 595- A 595-TPS40075RHLR	Datasheet	129In Stock	Cut Tape 37,90 kr. 28,94 kr. 26,71 kr. 24,02 kr. Reel 23,05 kr. 22,98 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	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 Wide Input Synch Buc k Controller ALT 59 ALT 595-TPS40075RHLT TPS40075RHLTG4 Texas Instruments 1: 37,75 kr. 188In Stock	Mfr. Part No. TPS40075RHLTG4 Mouser Part No 595-TPS40075RHLTG4	Texas Instruments	Switching Controllers Wide Input Synch Buc k Controller ALT 59 ALT 595-TPS40075RHLT	Datasheet	188In Stock	Cut Tape 37,75 kr. 28,72 kr. 26,48 kr. 24,02 kr. Reel 22,98 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	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 4 Ch Multiphase Buck DC/DC Controller A A 595-TPS40090PWR TPS40090PW Texas Instruments 1: 52,52 kr. 8In Stock	Mfr. Part No. TPS40090PW Mouser Part No 595-TPS40090PW	Texas Instruments	Switching Controllers 4 Ch Multiphase Buck DC/DC Controller A A 595-TPS40090PWR	Datasheet	8In Stock	52,52 kr. 39,99 kr. 35,51 kr. 33,50 kr. 32,53 kr.	Min.: 1 Mult.: 1	Buck	1 Output	100 kHz to 1 MHz	87.5 %	700 mV to 3.3 V	120 A	- 40 C	+ 85 C	SMD/SMT	TSSOP-24	Tube
Switching Controllers 2-Ph Synch Buck Cntr A 595-TPS40131RHBT A 595-TPS40131RHBT TPS40131RHBR Texas Instruments 1: 25,96 kr. 82In Stock	Mfr. Part No. TPS40131RHBR Mouser Part No 595-TPS40131RHBR	Texas Instruments	Switching Controllers 2-Ph Synch Buck Cntr A 595-TPS40131RHBT A 595-TPS40131RHBT	Datasheet	82In Stock	Cut Tape 25,96 kr. 23,13 kr. 22,08 kr. 19,17 kr. View Reel 17,68 kr. 18,20 kr. 18,13 kr. 17,68 kr. 17,68 kr. MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Buck	1 Output	100 kHz to 1 MHz	87.5 %	700 mV to 5.8 V	50 A	- 40 C	+ 85 C	SMD/SMT	VQFN-32	Reel, Cut Tape, MouseReel
Switching Controllers Low Pin Count Sync B uck DC/DC Cntrlr A A 595-TPS40190DRCR TPS40190DRCT Texas Instruments 1: 25,36 kr. 240In Stock	Mfr. Part No. TPS40190DRCT Mouser Part No 595-TPS40190DRCT	Texas Instruments	Switching Controllers Low Pin Count Sync B uck DC/DC Cntrlr A A 595-TPS40190DRCR	Datasheet	240In Stock	Cut Tape 25,36 kr. 18,87 kr. 17,23 kr. 15,44 kr. Reel 14,40 kr. View 13,95 kr. 13,43 kr. 13,20 kr. 13,06 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	300 kHz	85 %	600 mV to 12.75 V	20 A	- 40 C	+ 85 C	SMD/SMT	VSON-10	Reel, Cut Tape, MouseReel
Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40192DRCR TPS40192DRCT Texas Instruments 1: 25,14 kr. 242In Stock	Mfr. Part No. TPS40192DRCT Mouser Part No 595-TPS40192DRCT	Texas Instruments	Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40192DRCR	Datasheet	242In Stock	Cut Tape 25,14 kr. 19,02 kr. 17,46 kr. 15,82 kr. Reel 14,92 kr. View 14,17 kr. 13,58 kr. 13,43 kr. 13,35 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	600 kHz	85 %	591 mV to 14.4 V	20 A	- 40 C	+ 85 C	SMD/SMT	VSON-10	Reel, Cut Tape, MouseReel
Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40193DRCR TPS40193DRCT Texas Instruments 1: 25,29 kr. 170In Stock	Mfr. Part No. TPS40193DRCT Mouser Part No 595-TPS40193DRCT	Texas Instruments	Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40193DRCR	Datasheet	170In Stock	Cut Tape 25,29 kr. 19,10 kr. 17,61 kr. 15,82 kr. Reel 14,99 kr. View 14,92 kr. 14,47 kr. 14,25 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	300 kHz	85 %	591 mV to 14.4 V	20 A	- 40 C	+ 85 C	SMD/SMT	VSON-10	Reel, Cut Tape, MouseReel
Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr A 5 A 595-TPS40200DR TPS40200D Texas Instruments 1: 17,61 kr. 30In Stock 2.625Expected 07/06/2027	Mfr. Part No. TPS40200D Mouser Part No 595-TPS40200D	Texas Instruments	Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr A 5 A 595-TPS40200DR	Datasheet	30In Stock 2.625Expected 07/06/2027	17,61 kr. 13,43 kr. 11,94 kr. 11,04 kr. View 10,97 kr. 10,29 kr. 9,92 kr. 9,70 kr. 9,55 kr.	Min.: 1 Mult.: 1	Buck	1 Output	35 kHz to 500 kHz	95 %	700 mV to 46 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOIC-8	Tube
Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr ALT ALT 595-TPS40200D TPS40200DG4 Texas Instruments 1: 18,65 kr. 274In Stock	Mfr. Part No. TPS40200DG4 Mouser Part No 595-TPS40200DG4	Texas Instruments	Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr ALT ALT 595-TPS40200D	Datasheet	274In Stock	18,65 kr. 13,95 kr. 12,76 kr. 11,34 kr. View 9,85 kr. 9,18 kr. 9,03 kr. 8,95 kr.	Min.: 1 Mult.: 1	Buck	1 Output	35 kHz to 500 kHz	95 %	700 mV to 46 V	3 A	- 40 C	+ 85 C	SMD/SMT	SOIC-8	Tube
Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr ALT ALT 595-TPS40200DR TPS40200DRG4 Texas Instruments 1: 15,89 kr. 76In Stock	Mfr. Part No. TPS40200DRG4 Mouser Part No 595-TPS40200DRG4	Texas Instruments	Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr ALT ALT 595-TPS40200DR	Datasheet	76In Stock	Cut Tape 15,89 kr. 11,79 kr. 10,74 kr. 9,62 kr. View Reel 7,68 kr. 9,10 kr. 8,80 kr. 8,50 kr. 7,68 kr. 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 3-V to 20-V 25-A s y nchronous buck cont A 595-TPS40345DRCR TPS40345DRCT Texas Instruments 1: 19,62 kr. 250In Stock	Mfr. Part No. TPS40345DRCT Mouser Part No 595-TPS40345DRCT	Texas Instruments	Switching Controllers 3-V to 20-V 25-A s y nchronous buck cont A 595-TPS40345DRCR Learn More about Texas Instruments ti tps40345 controllers	Datasheet	250In Stock	Cut Tape 19,62 kr. 14,62 kr. 13,43 kr. 12,09 kr. Reel 11,26 kr. View 10,89 kr. 10,44 kr. 10,22 kr. 9,92 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	600 kHz	90 %	600 mV to 18 V	20 A	- 20 C	+ 85 C	SMD/SMT	VSON-10	Reel, Cut Tape, MouseReel
Switching Controllers High Speed PWM Contr oller A 595-UC3823A A 595-UC3823ADWTR UC3823ADW Texas Instruments 1: 189,71 kr. 69In Stock	Mfr. Part No. UC3823ADW Mouser Part No 595-UC3823ADW	Texas Instruments	Switching Controllers High Speed PWM Contr oller A 595-UC3823A A 595-UC3823ADWTR	Datasheet	69In Stock	189,71 kr. 153,23 kr. 140,17 kr. 132,86 kr. 128,61 kr.	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	5.1 V	2 A	0 C	+ 70 C	SMD/SMT	SOIC-16	Tube
Switching Controllers High Speed PWM Contr oller UC3823AN Texas Instruments 1: 207,69 kr. 13In Stock 50Expected 19/11/2026	Mfr. Part No. UC3823AN Mouser Part No 595-UC3823AN	Texas Instruments	Switching Controllers High Speed PWM Contr oller	Datasheet	13In Stock 50Expected 19/11/2026	207,69 kr. 166,88 kr. 156,59 kr. 142,04 kr. View 136,97 kr. 135,40 kr.	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	1 MHz	100 %	5.1 V	2 A	0 C	+ 70 C	Through Hole	PDIP-16	Tube
Switching Controllers High Speed PWM Contr oller UC3824N Texas Instruments 1: 210,67 kr. 6In Stock	Mfr. Part No. UC3824N Mouser Part No 595-UC3824N	Texas Instruments	Switching Controllers High Speed PWM Contr oller	Datasheet	6In Stock	210,67 kr. 170,61 kr. 153,30 kr. 144,80 kr. View 139,73 kr. 139,65 kr. Quote	Min.: 1 Mult.: 1	Boost, Buck	2 Output	1 MHz	100 %	5.1 V	1.5 A	0 C	+ 70 C	Through Hole	PDIP-16	Tube
Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3803D UCC3803DTR Texas Instruments 1: 16,19 kr. 430In Stock 5.000Expected 23/11/2026	Mfr. Part No. UCC3803DTR Mouser Part No 595-UCC3803DTR	Texas Instruments	Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3803D	Datasheet	430In Stock 5.000Expected 23/11/2026	Cut Tape 16,19 kr. 12,01 kr. 10,97 kr. 9,85 kr. Reel 8,36 kr. View 9,33 kr. 9,03 kr. 8,88 kr. 8,06 kr. 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 Programmable Maximum Duty Cycle A 595-UC A 595-UCC3807DTR-3 UCC3807D-3 Texas Instruments 1: 45,51 kr. 11In Stock	Mfr. Part No. UCC3807D-3 Mouser Part No 595-UCC3807D-3	Texas Instruments	Switching Controllers Programmable Maximum Duty Cycle A 595-UC A 595-UCC3807DTR-3	Datasheet	11In Stock	45,51 kr. 34,84 kr. 32,23 kr. 29,24 kr. View 27,75 kr. 27,01 kr. 26,71 kr. 26,33 kr.	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	1 MHz	81 %	4.3 V	1 A	0 C	+ 70 C	SMD/SMT	SOIC-8	Tube
Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895DWTR UCC3895DW Texas Instruments 1: 54,01 kr. 186In Stock 350Expected 23/11/2026	Mfr. Part No. UCC3895DW Mouser Part No 595-UCC3895DW	Texas Instruments	Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895DWTR	Datasheet	186In Stock 350Expected 23/11/2026	54,01 kr. 41,93 kr. 38,79 kr. 37,23 kr.	Min.: 1 Mult.: 1	Boost, Buck	4 Output	1 MHz	100 %	5 V	100 mA	0 C	+ 70 C	SMD/SMT	SOIC-20	Tube
Switching Controllers BiCMOS Advanced Phas e Shift ALT 595-UCC ALT 595-UCC3895DW UCC3895DWG4 Texas Instruments 1: 59,46 kr. 75In Stock	Mfr. Part No. UCC3895DWG4 Mouser Part No 595-UCC3895DWG4	Texas Instruments	Switching Controllers BiCMOS Advanced Phas e Shift ALT 595-UCC ALT 595-UCC3895DW	Datasheet	75In Stock	59,46 kr. 47,89 kr. 40,58 kr. 39,02 kr. View 37,30 kr. 37,23 kr.	Min.: 1 Mult.: 1	Boost, Buck	4 Output	1 MHz	100 %	5 V	100 mA	0 C	+ 70 C	SMD/SMT	SOIC-20	Tube
Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895PWTR UCC3895PW Texas Instruments 1: 52,00 kr. 208In Stock	Mfr. Part No. UCC3895PW Mouser Part No 595-UCC3895PW	Texas Instruments	Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895PWTR	Datasheet	208In Stock	52,00 kr. 42,15 kr. 39,02 kr. 37,23 kr.	Min.: 1 Mult.: 1	Boost, Buck	4 Output	1 MHz	100 %	5 V	100 mA	0 C	+ 70 C	SMD/SMT	TSSOP-20	Tube
Switching Controllers Dig Pwr Pt of Load S ys Cntrlr A 595-UCD A 595-UCD9248PFC UCD9240PFC Texas Instruments 1: 118,76 kr. 25In Stock	Mfr. Part No. UCD9240PFC Mouser Part No 595-UCD9240PFC	Texas Instruments	Switching Controllers Dig Pwr Pt of Load S ys Cntrlr A 595-UCD A 595-UCD9248PFC	Datasheet	25In Stock	118,76 kr. 95,12 kr. 92,58 kr. 92,50 kr. View 90,71 kr. 89,97 kr. 89,89 kr.	Min.: 1 Mult.: 1	Buck	8 Output	2 MHz	100 %		6 mA	- 40 C	+ 125 C	SMD/SMT	TQFP-80	Tray