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 (EUR) Filter the results in the table by unit price based on your quantity.
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Analog Devices / Maxim Integrated Switching Controllers InTune Digital Point of Load Controller
Datasheet
126In Stock
Min.: 1
Mult.: 1
Max.: 126

Buck 1 Output 300 kHz to 1 MHz 95 % 500 mV to 5.25 V 40 A - 40 C + 85 C SMD/SMT TQFN-40 Tube
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
243In Stock
Min.: 1
Mult.: 1
Max.: 243

Buck 1 Output 300 kHz 100 % 3.3 V to 5 V 3 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Speed Step-Down Controller with Syn
Datasheet
7In Stock
Min.: 1
Mult.: 1
Max.: 7

Buck 1 Output 1 MHz 90 % 1.3 V to 5.5 V 35 A - 40 C + 85 C SMD/SMT SSOP-24 Tube

Analog Devices / Maxim Integrated Switching Controllers Adjustable-Output, Switch-Mode Current S
Datasheet
172In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 172
: 2.500

Buck 1 Output 500 kHz 100 % 2 V to 24 V - 40 C + 85 C SMD/SMT QSOP-16 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers High-Efficiency, PWM, Step-Down DC-DC Co
Datasheet
98In Stock
Min.: 1
Mult.: 1
Max.: 98

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 High-Efficiency, PWM, Step-Down DC-DC Co
Datasheet
100In Stock
Min.: 1
Mult.: 1
Max.: 100

Buck 1 Output 300 kHz 99 % 2.5 V to 5.5 V 10 A - 40 C + 85 C SMD/SMT QSOP-16 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Efficiency, PWM, Step-Down DC-DC Co
Datasheet
49In Stock
Min.: 1
Mult.: 1
Max.: 49

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
15In Stock
Min.: 1
Mult.: 1
Max.: 15

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
Min.: 1
Mult.: 1
Max.: 57

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
Min.: 1
Mult.: 1
Max.: 87

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
172In Stock
Min.: 1
Mult.: 1
Max.: 172

Buck 1 Output 330 kHz 100 % 3.3 V, 5 V 10 A - 40 C + 85 C SMD/SMT UMAX-10 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
68In Stock
Min.: 1
Mult.: 1
Max.: 68

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
5In Stock
Min.: 1
Mult.: 1
Max.: 5

Buck 1 Output 330 kHz 100 % 1.25 V to 18 V 10 A - 40 C + 85 C SMD/SMT UMAX-10 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
35In Stock
Min.: 1
Mult.: 1
Max.: 35

Buck 1 Output 330 kHz 100 % 1.25 V to 18 V 10 A - 40 C + 85 C SMD/SMT UMAX-10 AEC-Q100 Tube
Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
885In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 885
: 2.500

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 3A, 1MHz, DDR Memory Termination Supply
Datasheet
60In Stock
Min.: 1
Mult.: 1
Max.: 60

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
Min.: 1
Mult.: 1
Max.: 49

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 2.35V to 5.5V, 0.5 Accurate, 1MHz PWM S
Datasheet
103In Stock
Min.: 1
Mult.: 1
Max.: 103

Buck 1 Output 500 kHz, 1 MHz 92 % 800 mV to 4.95 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
Min.: 1
Mult.: 1
Max.: 49

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 Step-Down Controllers with Synchronous R
Datasheet
68In Stock
Min.: 1
Mult.: 1
Max.: 68

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
Min.: 1
Mult.: 1
Max.: 94

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
12In Stock
Min.: 1
Mult.: 1
Max.: 12

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
Min.: 1
Mult.: 1
Max.: 192

Buck 1 Output 100 kHz 95 % 800 mV to 23 V 15 A - 40 C + 85 C SMD/SMT UMAX-10 Tube
onsemi Switching Controllers IMVP8 3+2+1 SVID CONTRO
Datasheet
70In Stock
2.500Expected 8/31/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 3 Output 300 kHz to 750 kHz 100 % 3.5 V 200 uA - 40 C + 100 C SMD/SMT QFN-52 Reel, Cut Tape, MouseReel
Torex Semiconductor Switching Controllers 16V Input Step-Down DCDC Controller
Datasheet
90In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 300 kHz 100 % Adjustable 3 A - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel