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.
Qty. RoHS ECAD Model Topology
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Input Voltage
Output Voltage
Output Current
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Microchip Technology Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start
Datasheet
5,204In Stock
Min.: 1
Mult.: 1
: 5,000

Buck 1 Output 270 kHz to 800 kHz 85 % 600 mV to 30 V - 40 C + 125 C SMD/SMT VQFN-16 Reel, Cut Tape
Analog Devices Switching Controllers Hi Speed C Mode Pulse Width Mods
Datasheet
336In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz 96 % 5 V 1 A 0 C + 100 C Through Hole PDIP-8 Tube
Analog Devices Switching Controllers Hi Speed C Mode Pulse Width Mods
Datasheet
355In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 100 C SMD/SMT SOIC-8 Tube
Analog Devices Switching Controllers Hi Pwr Sync DC/DC Cntr
Datasheet
128In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 150 kHz 90 % Adjustable 30 A 0 C + 70 C SMD/SMT SOIC-20 Tube
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
635In Stock
Min.: 1
Mult.: 1

Buck 2 Output 300 kHz 99 % 1.26 V to 2.5 V 240 A - 40 C + 85 C SMD/SMT SSOP-28 Tube
Analog Devices Switching Controllers Low IQ Triple Output Buck-Buck-Boost CTL
Datasheet
485In Stock
Min.: 1
Mult.: 1

Boost, Buck 3 Output 100 kHz to 3 MHz 100 % 800 mV to 40 V 20 A - 40 C + 125 C SMD/SMT QFN-40 Tube

Torex Semiconductor Switching Controllers 16V Step-Down DCDC Controller
Datasheet
2,750In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 1 MHz 100 % 1.2 V 3 A - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085SDE/NOPB
Datasheet
3,000In Stock
MouseReel Available
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 LLP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477AMMX/NOPB
Datasheet
811In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 500 kHz 93 % 1.265 V 6 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477MM/NOPB
Datasheet
4,032In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,500

Buck 1 Output 500 kHz 93 % 1.265 V 6 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers 38V DC-DC Buck Controller with HLL
Datasheet
6,968In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

Buck 1 Output 200 kHz to 600 kHz 85 % 800 mV to 24 V 15 A - 40 C + 125 C SMD/SMT MLF-16 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Monolithic High Speed SMPS Controller
Datasheet
1,960In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Infineon Technologies Switching Controllers COOLSET
Datasheet
1,680In Stock
Min.: 1
Mult.: 1
Buck, Flyback 1 Output 65 kHz 80 % 15 V - 40 C + 150 C Through Hole DIP-7 Tube
Microchip Technology Switching Controllers Digitally enhanced power analog buck controller
Datasheet
359In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz to 1.6 MHz 100 % 300 mV to 16 V 4 A - 40 C + 125 C SMD/SMT QFN-24 Tube
Texas Instruments Switching Controllers 3-20V Wide Input Syn ch Buck Cntrlr A 59 A 595-TPS40304DRCR
Datasheet
4,974In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

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 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085AMME/NOPB
Datasheet
920In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 1 MHz 100 % 900 mV to 42 V 1.75 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTC/NOPB
Datasheet
3,093In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 600 kHz 90 % 600 mV to 5 V 20 A - 40 C + 125 C SMD/SMT TSSOP-14 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL
Datasheet
1,458In Stock
Min.: 1
Mult.: 1

Boost, Buck 2 Output 3 MHz 100 % 800 mV to 40 V 180 uA - 40 C + 150 C SMD/SMT QFN-28 Tube
Analog Devices Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL
Datasheet
8,928In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Boost, Buck 2 Output 3 MHz 100 % 800 mV to 40 V 180 uA - 40 C + 150 C SMD/SMT QFN-28 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117QPMHE/NOPB
Datasheet
283In Stock
Min.: 1
Mult.: 1

Buck 1 Output 50 kHz to 750 kHz 98 % 800 mV to 62 V 20 A - 40 C + 125 C SMD/SMT HTSSOP-20 AEC-Q100 Tube
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCR
Datasheet
1,838In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1.2 MHz 85 % 600 mV to 17 V 25 A - 40 C + 125 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Switching Controllers 40V, High-Performance, Synchronous Buck
Datasheet
954In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz to 1 MHz 87.5 % 600 mV to 36 V 25 A - 40 C + 125 C SMD/SMT QSOP-16 Tube
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
2,404In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 300 kHz 100 % 3.3 V, 5 V 3 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Switching Controllers Dual-Output Step-Down DC-DC Converter fo
Datasheet
539In Stock
Min.: 1
Mult.: 1

Buck 2 Output 1.25 MHz 100 % 500 mV to 5.5 V 2 A - 40 C + 85 C SMD/SMT QSOP-16 Tube
Microchip Technology Switching Controllers 75V DC-DC Buck Controller with HLL
Datasheet
1,616In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

Buck 1 Output 200 kHz to 600 kHz 85 % 800 mV to 24 V 15 A - 40 C + 125 C SMD/SMT MLF-16 Reel, Cut Tape, MouseReel