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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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
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Packaging
Analog Devices / Maxim Integrated Switching Controllers High-Efficiency, PWM, Step-Down DC-DC Co
Datasheet
49In Stock
53,26 kr.
52,00 kr.
51,92 kr.
Min.: 1
Mult.: 1
Buck 1 Output 300 kHz 99 % 2.5 V to 5.5 V 10 A - 40 C + 85 C SMD/SMT SOIC-Narrow-16 Tube
Analog Devices / Maxim Integrated Switching Controllers 2MHz, 36V, Dual Buck with Preboost and 20 A Quiescent Current
Datasheet
14In Stock
139,88 kr.
113,62 kr.
96,46 kr.
95,56 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 200 kHz to 2.2 MHz 95 % Adjustable 10 A - 40 C + 125 C SMD/SMT TQFN-40 AEC-Q100 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Speed Step-Down Controller for Note
Datasheet
57In Stock
90,34 kr.
71,69 kr.
60,87 kr.
60,43 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 600 kHz 100 % 1 V to 5.5 V 3 A - 40 C + 85 C SMD/SMT QSOP-20 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
87In Stock
72,88 kr.
57,22 kr.
48,64 kr.
48,42 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 330 kHz 100 % 3.3 V, 5 V 10 A - 40 C + 125 C SMD/SMT UMAX-10 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
68In Stock
72,88 kr.
57,22 kr.
48,64 kr.
48,42 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 330 kHz 100 % 1.25 V to 18 V 10 A - 40 C + 125 C SMD/SMT UMAX-10 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
662In Stock
Cut Tape
42,60 kr.
41,70 kr.
41,48 kr.
41,48 kr.
MouseReel Available
Min.: 1
Mult.: 1
Buck 1 Output 330 kHz 100 % 1.25 V to 18 V 10 A - 40 C + 85 C SMD/SMT UMAX-10 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Switching Controllers Small, Dual, High-Efficiency Buck Contro
Datasheet
51In Stock
87,88 kr.
69,08 kr.
64,38 kr.
53,79 kr.
View
Min.: 1
Mult.: 1
Buck 2 Output 350 kHz 100 % 1.8 V, 2.5 V, 1 V to 5.5 V 600 mA - 40 C + 85 C SMD/SMT QSOP-16 Tube

Analog Devices / Maxim Integrated Switching Controllers 3A, 1MHz, DDR Memory Termination Supply
Datasheet
60In Stock
63,78 kr.
62,37 kr.
62,14 kr.
Min.: 1
Mult.: 1
Buck 1 Output 1 MHz 100 % 1.1 V to 5.5 V 3 A - 40 C + 85 C SMD/SMT QSOP-16 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, High-Frequency, Current-Mode P
Datasheet
49In Stock
56,40 kr.
43,72 kr.
37,08 kr.
36,93 kr.
View
Min.: 1
Mult.: 1
Boost, Buck 1 Output 300 kHz 89 % 800 mV to 11.35 V 25 A - 40 C + 85 C SMD/SMT USOP-10 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, High-Frequency, Current-Mode P
Datasheet
90In Stock
55,28 kr.
42,75 kr.
39,02 kr.
35,51 kr.
View
Min.: 1
Mult.: 1
Boost, Buck 1 Output 300 kHz 89 % 400 mV to 4.73 V 3 A - 40 C + 85 C SMD/SMT USOP-10 Tube
Analog Devices / Maxim Integrated Switching Controllers 2.35V to 5.5V, 0.5 Accurate, 1MHz PWM S
Datasheet
20In Stock
85,04 kr.
67,36 kr.
57,22 kr.
56,85 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 500 kHz, 1 MHz 92 % 1.5 V, 1.8 V, 2.5 V, 3.3 V 20 A - 40 C + 85 C SMD/SMT QSOP-20 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost Voltage-Mode PWM Step-Down Cont
Datasheet
49In Stock
25,14 kr.
24,62 kr.
24,54 kr.
Min.: 1
Mult.: 1
Buck 1 Output 100 kHz 95 % 800 mV 2 A - 40 C + 85 C SMD/SMT UMAX-10 Tube
Analog Devices / Maxim Integrated Switching Controllers Two-output buck controller for automotiv
Datasheet
100In Stock
20,44 kr.
19,99 kr.
Min.: 1
Mult.: 1
Buck 2 Output 2.2 MHz 99 % 500 mV to 1.27 V 12 A, 24 A - 40 C + 125 C SMD/SMT TQFN-32 Tray
Analog Devices / Maxim Integrated Switching Controllers Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7 A IQ and Optional Bypass Mode
Datasheet
1.092In Stock
56,55 kr.
43,86 kr.
40,73 kr.
37,23 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 220 kHz to 2.2 MHz 99 % 5 V - 40 C + 125 C SMD/SMT TQFN-EP-20 Tray

Analog Devices / Maxim Integrated Switching Controllers Step-Down Controllers with Synchronous R
Datasheet
67In Stock
134,73 kr.
107,57 kr.
101,98 kr.
93,32 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 300 kHz 96 % 3 V, 5 V, 2.5 V to 6 V 10 A 0 C + 70 C SMD/SMT SOIC-16 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Wide Input Range, Step-Down Co
Datasheet
94In Stock
19,25 kr.
18,87 kr.
18,80 kr.
Min.: 1
Mult.: 1
Buck 1 Output 300 kHz 95 % 800 mV to 23 V 15 A - 40 C + 85 C SMD/SMT UMAX-10 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Wide Input Range, Step-Down Co
Datasheet
192In Stock
35,36 kr.
26,93 kr.
22,83 kr.
22,45 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 100 kHz 95 % 800 mV to 23 V 15 A - 40 C + 85 C SMD/SMT UMAX-10 Tube

Analog Devices / Maxim Integrated Switching Controllers Interleaved High-Efficiency, Dual Power-
Datasheet
36In Stock
64,83 kr.
63,34 kr.
63,11 kr.
Min.: 1
Mult.: 1
Buck 2 Output 500 kHz 99 % 3.3 V, 5 V, 1 V to 5.5 V 5 A - 40 C + 85 C SMD/SMT TQFN-28 Tube
Texas Instruments Switching Controllers Commercial 30-V lo w -power current-mode
Datasheet
1.420In Stock
Cut Tape
8,36 kr.
6,01 kr.
5,44 kr.
4,80 kr.
Reel
4,01 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
: 2.500
Buck, Flyback 1 Output 110 kHz 100 % 200 mA 0 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MH/NOPB
Datasheet
189In Stock
Cut Tape
51,92 kr.
40,21 kr.
37,30 kr.
34,09 kr.
Reel
32,00 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
: 250
Boost, Buck 1 Output 500 kHz 80 % 1.23 V to 38 V 4 A - 40 C + 125 C SMD/SMT HTSSOP-20 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 42-V automotive sync hronous buck DC/DC
Datasheet
20In Stock
3.000Expected 12/11/2026
Cut Tape
33,35 kr.
25,44 kr.
23,13 kr.
20,96 kr.
20,37 kr.
Reel
19,92 kr.
MouseReel Available
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 2.2 MHz 100 % 800 mV to 36 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQ/NOPB
Datasheet
215In Stock
Cut Tape
47,89 kr.
36,93 kr.
34,17 kr.
31,18 kr.
Reel
28,87 kr.
View
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 WQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117QPSQE/NOPB
Datasheet
213In Stock
Cut Tape
51,10 kr.
43,49 kr.
37,90 kr.
37,37 kr.
Reel
32,75 kr.
31,93 kr.
MouseReel Available
Min.: 1
Mult.: 1
: 1.000
Buck 1 Output 50 kHz to 750 kHz 98 % 800 mV to 62 V 20 A - 40 C + 125 C SMD/SMT WQFN-24 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 75-V sync hronous buck DC/DC
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.
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
Texas Instruments Switching Controllers 75V Synchronous Buck Controller With Wid A 595-LM5145RGYR
Datasheet
41In Stock
4.000On Order
Cut Tape
38,49 kr.
29,32 kr.
27,01 kr.
24,54 kr.
Reel
23,28 kr.
View
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