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 Fixed-Freq Notebook Sys Pwr Controller A A 595-TPS51220ARTVR TPS51220ARTVT Texas Instruments 1: 31,85 kr. 157In Stock	Mfr. Part No. TPS51220ARTVT Mouser Part No 595-TPS51220ARTVT	Texas Instruments	Switching Controllers Fixed-Freq Notebook Sys Pwr Controller A A 595-TPS51220ARTVR	Datasheet	157In Stock	Cut Tape 31,85 kr. 24,32 kr. 22,38 kr. 20,37 kr. Reel 19,25 kr. View 18,65 kr. 18,58 kr. 18,43 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	2 Output	200 kHz to 1 MHz	99 %	1 V to 12 V	20 A	- 40 C	+ 85 C	SMD/SMT	WQFN-32	Reel, Cut Tape, MouseReel
Switching Controllers Fixed-Freq Notebook Sys Pwr Cntrlr A 595 A 595-TPS51222RTVR TPS51222RTVT Texas Instruments 1: 72,51 kr. 138In Stock	Mfr. Part No. TPS51222RTVT Mouser Part No 595-TPS51222RTVT	Texas Instruments	Switching Controllers Fixed-Freq Notebook Sys Pwr Cntrlr A 595 A 595-TPS51222RTVR	Datasheet	138In Stock	Cut Tape 72,51 kr. 56,62 kr. 52,59 kr. 48,27 kr. Reel 45,80 kr. View 44,91 kr. 43,86 kr. Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	2 Output	200 kHz to 1 MHz	99 %	1 V to 12 V	20 A	- 40 C	+ 85 C	SMD/SMT	WQFN-32	Reel, Cut Tape, MouseReel
Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVR TPS64200DBVT Texas Instruments 1: 13,50 kr. 110In Stock	Mfr. Part No. TPS64200DBVT Mouser Part No 595-TPS64200DBVT	Texas Instruments	Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVR	Datasheet	110In Stock	Cut Tape 13,50 kr. 10,00 kr. 9,10 kr. 8,13 kr. Reel 7,25 kr. View 6,93 kr. 6,74 kr. 6,61 kr. 6,48 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	350 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 Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVR TPS64201DBVT Texas Instruments 1: 13,20 kr. 238In Stock	Mfr. Part No. TPS64201DBVT Mouser Part No 595-TPS64201DBVT	Texas Instruments	Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVR	Datasheet	238In Stock	Cut Tape 13,20 kr. 9,85 kr. 8,95 kr. 7,98 kr. Reel 7,45 kr. View 7,31 kr. 7,12 kr. 6,99 kr. 6,74 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	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 Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64203DBVR TPS64203DBVT Texas Instruments 1: 12,61 kr. 704In Stock	Mfr. Part No. TPS64203DBVT Mouser Part No 595-TPS64203DBVT	Texas Instruments	Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64203DBVR	Datasheet	704In Stock	Cut Tape 12,61 kr. 9,62 kr. 8,95 kr. 7,98 kr. Reel 7,45 kr. View 6,80 kr. 6,74 kr. MouseReel Available	Min.: 1 Mult.: 1 : 250	Buck	1 Output	800 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 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 A 595-UC3823D A 595-UC3823DWTR UC3823DW Texas Instruments 1: 50,80 kr. 102In Stock	Mfr. Part No. UC3823DW Mouser Part No 595-UC3823DW	Texas Instruments	Switching Controllers High Speed PWM Contr oller A 595-UC3823D A 595-UC3823DWTR	Datasheet	102In Stock	50,80 kr. 39,17 kr. 36,33 kr. 33,05 kr. View 31,41 kr. 30,51 kr. 29,09 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 UC3823N Texas Instruments 1: 54,16 kr. 112In Stock	Mfr. Part No. UC3823N Mouser Part No 595-UC3823N	Texas Instruments	Switching Controllers High Speed PWM Contr oller	Datasheet	112In Stock	54,16 kr. 41,93 kr. 37,15 kr. 34,24 kr. View 32,23 kr. 32,08 kr. 31,33 kr. Quote	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 Current Mode UC3842AD Texas Instruments 1: 11,41 kr. 15In Stock 1.000Expected 23/11/2026	Mfr. Part No. UC3842AD Mouser Part No 595-UC3842AD	Texas Instruments	Switching Controllers Current Mode	Datasheet	15In Stock 1.000Expected 23/11/2026	11,41 kr. 8,36 kr. 7,31 kr. 6,67 kr. View 6,33 kr. 6,09 kr. 5,98 kr. 5,68 kr. 5,56 kr.	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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD8 UC3842AD8TR Texas Instruments 1: 6,22 kr. 224In Stock	Mfr. Part No. UC3842AD8TR Mouser Part No 595-UC3842AD8TR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD8	Datasheet	224In Stock	Cut Tape 6,22 kr. 4,46 kr. 4,02 kr. 3,54 kr. Reel 2,93 kr. View 3,31 kr. 3,17 kr. 3,07 kr. 2,86 kr. 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 ALT 595 -UC3842AD ALT 595-U ALT 595-UC3842AD UC3842ADG4 Texas Instruments 1: 11,12 kr. 365In Stock	Mfr. Part No. UC3842ADG4 Mouser Part No 595-UC3842ADG4	Texas Instruments	Switching Controllers Current Mode ALT 595 -UC3842AD ALT 595-U ALT 595-UC3842AD	Datasheet	365In Stock	11,12 kr. 8,36 kr. 7,06 kr. 6,54 kr. View 6,16 kr. 5,01 kr.	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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD UC3842ADTR Texas Instruments 1: 8,06 kr. 949In Stock 2.500Expected 08/02/2027	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	949In Stock 2.500Expected 08/02/2027	Cut Tape 8,06 kr. 5,87 kr. 5,31 kr. 4,70 kr. Reel 3,92 kr. View 4,41 kr. 4,24 kr. 4,06 kr. 3,77 kr. 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 UC3842D Texas Instruments 1: 11,49 kr. 611In Stock	Mfr. Part No. UC3842D Mouser Part No 595-UC3842D	Texas Instruments	Switching Controllers Current Mode	Datasheet	611In Stock	11,49 kr. 8,65 kr. 7,68 kr. 7,12 kr. View 6,80 kr. 6,42 kr. 6,15 kr. 6,03 kr.	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 Current Mode UC3842D8 Texas Instruments 1: 12,61 kr. 439In Stock	Mfr. Part No. UC3842D8 Mouser Part No 595-UC3842D8	Texas Instruments	Switching Controllers Current Mode	Datasheet	439In Stock	12,61 kr. 9,25 kr. 7,61 kr. 6,86 kr. View 6,54 kr. 6,37 kr. 6,35 kr. 6,30 kr. 6,24 kr.	Min.: 1 Mult.: 1	Boost, Buck, Flyback, Forward	1 Output	500 kHz	100 %	5 V	200 mA	0 C	+ 70 C	SMD/SMT	SOIC-8	Tube
Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D8 UC3842D8TR Texas Instruments 1: 9,70 kr. 588In Stock	Mfr. Part No. UC3842D8TR Mouser Part No 595-UC3842D8TR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D8	Datasheet	588In Stock	Cut Tape 9,70 kr. 7,06 kr. 6,40 kr. 5,95 kr. Reel 5,95 kr. 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 UC3842N Texas Instruments 1: 13,95 kr. 163In Stock	Mfr. Part No. UC3842N Mouser Part No 595-UC3842N	Texas Instruments	Switching Controllers Current Mode	Datasheet	163In Stock	13,95 kr. 10,29 kr. 9,03 kr. 8,58 kr. View 8,13 kr. 7,25 kr. 7,12 kr. 6,99 kr. 6,80 kr.	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 Current Mode UC3843AD Texas Instruments 1: 15,96 kr. 1.085In Stock	Mfr. Part No. UC3843AD Mouser Part No 595-UC3843AD	Texas Instruments	Switching Controllers Current Mode	Datasheet	1.085In Stock	15,96 kr. 11,79 kr. 10,74 kr. 9,70 kr. View 9,10 kr. 8,80 kr. 8,50 kr. 8,36 kr. 8,06 kr.	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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD8 UC3843AD8TR Texas Instruments 1: 6,22 kr. 2.772In Stock	Mfr. Part No. UC3843AD8TR Mouser Part No 595-UC3843AD8TR	Texas Instruments	Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD8	Datasheet	2.772In Stock	Cut Tape 6,22 kr. 4,46 kr. 4,02 kr. 3,54 kr. Reel 2,93 kr. View 3,31 kr. 3,17 kr. 3,07 kr. 2,78 kr. 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 ALT 595-UC3 ALT 595-UC3843AD UC3843ADG4 Texas Instruments 1: 15,96 kr. 106In Stock	Mfr. Part No. UC3843ADG4 Mouser Part No 595-UC3843ADG4	Texas Instruments	Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AD	Datasheet	106In Stock	15,96 kr. 11,86 kr. 10,22 kr. 9,70 kr. View 9,10 kr. 8,95 kr. 8,50 kr. 8,36 kr.	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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD UC3843ADTR Texas Instruments 1: 3,78 kr. 2.453In 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	2.453In Stock	Cut Tape 3,78 kr. 2,68 kr. 2,61 kr. Reel 2,61 kr. 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 UC3843AN Texas Instruments 1: 11,49 kr. 536In Stock	Mfr. Part No. UC3843AN Mouser Part No 595-UC3843AN	Texas Instruments	Switching Controllers Current Mode	Datasheet	536In Stock	11,49 kr. 8,50 kr. 7,18 kr. 6,80 kr. View 6,37 kr. 6,16 kr. 6,14 kr. 5,75 kr. 5,63 kr.	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 Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AN UC3843ANG4 Texas Instruments 1: 11,56 kr. 356In Stock	Mfr. Part No. UC3843ANG4 Mouser Part No 595-UC3843ANG4	Texas Instruments	Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AN	Datasheet	356In Stock	11,56 kr. 8,73 kr. 7,38 kr. 6,80 kr. View 6,42 kr. 5,21 kr.	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 Current Mode UC3843D Texas Instruments 1: 12,38 kr. 713In Stock	Mfr. Part No. UC3843D Mouser Part No 595-UC3843D	Texas Instruments	Switching Controllers Current Mode	Datasheet	713In Stock	12,38 kr. 9,18 kr. 7,76 kr. 7,38 kr. View 6,99 kr. 6,67 kr. 6,48 kr. 6,27 kr. 6,14 kr.	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