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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Results: 681
Select Image Part # Mfr. Description Datasheet Availability Pricing (DKK) Filter the results in the table by unit price based on your quantity. Qty. RoHS ECAD Model Topology Number of Outputs Switching Frequency Duty Cycle - Max Input Voltage Output Voltage Output Current Minimum Operating Temperature Maximum Operating Temperature Mounting Style Package/Case Qualification Packaging
Texas Instruments Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b A 595-LM25141QRGETQ1
12.489On Order
Cut Tape
32,00 kr.
24,39 kr.
22,45 kr.
20,37 kr.
19,47 kr.
Reel
17,75 kr.
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 440 kHz, 2.2 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 6V to 42V Synchronou s Buck DC-DC Contro A 595-LM25145RGYT
11.998Expected 08/04/2027
Cut Tape
20,44 kr.
15,37 kr.
14,10 kr.
12,68 kr.
Reel
10,82 kr.
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 100 kHz to 1 MHz 99 % 800 mV to 40 V 30 A - 40 C + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3.5-V to 65-V low Iq dual 2-phase sync
4.993Expected 07/01/2027
Cut Tape
117,42 kr.
93,40 kr.
87,36 kr.
81,46 kr.
Reel
73,78 kr.
Min.: 1
Mult.: 1
: 2.500
Buck 2 Output 100 kHz to 2.2 MHz 99 % 600 mV to 55 V 100 A - 40 C + 150 C SMD/SMT VQFNP-40 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 75V Synchronous Buck Controller With Wid A 595-LM5145RGYT
20.797Expected 18/03/2027
Cut Tape
24,62 kr.
18,58 kr.
17,16 kr.
15,44 kr.
Reel
14,25 kr.
Min.: 1
Mult.: 1
: 3.000
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
Texas Instruments Switching Controllers 100-V synchronous bu ck DC/DC controller
17.395Expected 04/02/2027
Cut Tape
31,03 kr.
23,57 kr.
21,78 kr.
19,69 kr.
18,80 kr.
Reel
17,08 kr.
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
Texas Instruments Switching Controllers Automotive 80-V syn chronous buck DC/DC
10.124On Order
Cut Tape
33,12 kr.
25,29 kr.
23,28 kr.
21,11 kr.
20,22 kr.
Reel
18,35 kr.
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 2.2 MHz 100 % 800 mV to 55 V 20 A - 40 C + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers AC 4.5-60V Wide-Inp Sync PWM Buck Cntrlr
5.944Expected 31/12/2026
Cut Tape
58,78 kr.
45,58 kr.
41,48 kr.
37,97 kr.
37,23 kr.
Reel
33,42 kr.
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 100 kHz to 1 MHz 95 % 600 mV to 57 V 20 A - 40 C + 125 C SMD/SMT VQFN-20 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 42V On-Time PFET Buc k Switch Cntlr A 92 A 926-LM25085MYE/NOPB
11.000On Order
Cut Tape
20,44 kr.
15,37 kr.
13,95 kr.
12,61 kr.
Reel
11,12 kr.
Min.: 1
Mult.: 1
: 1.000
Buck 1 Output 1 MHz 100 % 1.25 V to 42 V 1.75 A - 40 C + 125 C SMD/SMT MSOP-PowerPad-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 6-42V Wide Vin Curr ent Mode Synchronous A 926-LM25116MH/NOPB
5.000On Order
Cut Tape
38,05 kr.
29,09 kr.
26,93 kr.
24,54 kr.
23,57 kr.
Reel
21,41 kr.
Min.: 1
Mult.: 1
: 2.500
Buck 1 Output 1 MHz 85 % 1.215 V to 36 V 10 A - 40 C + 125 C SMD/SMT HTSSOP-20 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Automotive Grade 4.5 -75V Wide Vin Const A 926-LM5085QMYE/NOPB
32.680Expected 29/03/2027
Cut Tape
23,65 kr.
17,83 kr.
16,41 kr.
14,85 kr.
Reel
12,61 kr.
Min.: 1
Mult.: 1
: 3.500
Buck 1 Output 1 MHz 100 % 1.25 V to 75 V 1.75 A - 40 C + 125 C SMD/SMT MSOP-PowerPad-8 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Sync Buck Controller A 926-LM5116MHX/NOP A 926-LM5116MHX/NOPB
18.650On Order
56,10 kr.
43,42 kr.
41,78 kr.
36,40 kr.
34,32 kr.
Min.: 1
Mult.: 1
Buck 1 Output 50 kHz to 1 MHz 98 % 1.215 V to 80 V 20 A - 40 C + 150 C SMD/SMT HTSSOP-20 Tube

Texas Instruments Switching Controllers WIDE RANGE SYNCH BUC K CONTROLLER A 926- A 926-LM5116MH/NOPB
58.876On Order
Cut Tape
46,25 kr.
35,66 kr.
33,05 kr.
30,06 kr.
29,17 kr.
Reel
26,48 kr.
Min.: 1
Mult.: 1
: 2.500
Buck 1 Output 50 kHz to 1 MHz 98 % 1.215 V to 80 V 20 A - 40 C + 150 C SMD/SMT HTSSOP-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Range Sync Buck Controller
64On Order
3.795,50 kr.
3.429,88 kr.
Min.: 1
Mult.: 1
Buck 1 Output 50 kHz to 1 MHz 98 % 1.215 V to 80 V 20 A - 40 C + 125 C SMD/SMT CPAK-20 Tube

STMicroelectronics Switching Controllers Voltage/Current Cont
7.500Expected 07/05/2027
Cut Tape
11,41 kr.
8,36 kr.
7,53 kr.
6,74 kr.
Reel
5,71 kr.
Min.: 1
Mult.: 1
: 2.500
Buck 1 Output 70 kHz to 130 kHz 100 % Adjustable 80 mA - 40 C + 125 C SMD/SMT SOIC-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 6V to 42V Synchronou s Buck DC-DC Contro A 595-LM25145RGYR
1.580Expected 17/04/2028
Cut Tape
24,10 kr.
18,20 kr.
16,71 kr.
15,07 kr.
Reel
13,50 kr.
Min.: 1
Mult.: 1
: 250
Buck 1 Output 100 kHz to 1 MHz 99 % 800 mV to 40 V 30 A - 40 C + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr A 5 A 595-TPS40200D
4.476On Order
Cut Tape
15,82 kr.
11,79 kr.
10,74 kr.
9,62 kr.
Reel
8,06 kr.
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
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40303DRCT
6.000Expected 08/04/2027
Cut Tape
17,16 kr.
12,83 kr.
11,71 kr.
10,52 kr.
Reel
8,95 kr.
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 300 kHz 90 % 600 mV to 18 V 10 A - 40 C + 125 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn ch Buck Cntrlr A 59 A 595-TPS40304DRCT
6.000Expected 08/04/2027
Cut Tape
17,38 kr.
12,98 kr.
11,79 kr.
10,59 kr.
Reel
8,95 kr.
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 600 kHz 90 % 600 mV to 18 V 25 A - 40 C + 125 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers MCM- Primary Side FB A 595-UCC28910D A 5 A 595-UCC28910D
4.982Expected 17/12/2026
Cut Tape
12,01 kr.
8,80 kr.
8,06 kr.
7,12 kr.
Reel
6,04 kr.
Min.: 1
Mult.: 1
: 2.500
Buck, Flyback 1 Output 115 kHz 99 % 5 V 1.26 A - 40 C + 125 C SMD/SMT SOIC-7 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers UCC28911: 700V Flyba ck Switcher A 595-U A 595-UCC28911D
4.850Expected 28/01/2027
Cut Tape
10,07 kr.
7,38 kr.
6,67 kr.
5,92 kr.
Reel
4,98 kr.
Min.: 1
Mult.: 1
: 2.500
Buck, Flyback 1 Output 115 kHz 99 % 5 V 1.2 A - 40 C + 125 C SMD/SMT SOIC-7 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-0
2.551Expected 23/11/2026
Cut Tape
12,53 kr.
9,25 kr.
8,43 kr.
7,53 kr.
Reel
6,33 kr.
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 7.2 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MHE/NOPB A 926-LM3150MHE/NOPB
3.933On Order
34,84 kr.
26,71 kr.
25,66 kr.
22,23 kr.
21,56 kr.
Min.: 1
Mult.: 1
Buck 1 Output 1 MHz 96 % 600 mV 12 A - 40 C + 125 C SMD/SMT HTSSOP-14 Tube
Microchip Technology Switching Controllers Synchronous Buck PWM Control 600kHz 12ns
360Expected 21/12/2026
13,35 kr.
11,12 kr.
10,22 kr.
Min.: 1
Mult.: 1
Buck 1 Output 600 kHz 85 % 5 V 50 mA - 40 C + 125 C SMD/SMT DFN-10 AEC-Q100 Tube
Microchip Technology Switching Controllers High Efficiency Synchronous Buck Controller
257Expected 09/12/2026
29,69 kr.
24,92 kr.
Min.: 1
Mult.: 1
Buck 1 Output 300 kHz 86 % 1.25 V to 6 V 20 A - 40 C + 85 C SMD/SMT SOP-16 Tube
Texas Instruments Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1
250Expected 23/08/2027
Cut Tape
57,67 kr.
44,83 kr.
41,63 kr.
38,05 kr.
Reel
36,33 kr.
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