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
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 InTune Digital Point of Load Controller
Datasheet
257In Stock
1.440Expected 8/24/2026
Min.: 1
Mult.: 1
Max.: 180

Buck 1 Output 300 kHz to 1 MHz 95 % 500 mV to 5.25 V 40 A - 40 C + 85 C SMD/SMT TQFN-EP-32 Tube
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
510In Stock
Min.: 1
Mult.: 1

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 Adjustable-Output, Switch-Mode Current S
Datasheet
223In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz 100 % 2 V to 24 V 1 uA - 40 C + 85 C SMD/SMT QSOP-16 Tube
Analog Devices / Maxim Integrated Switching Controllers Step-Down Controllers with Synchronous R
Datasheet
162In Stock
Min.: 1
Mult.: 1

Buck 1 Output 300 kHz 96 % 2.5 V to 6 V 50 mA - 40 C + 85 C SMD/SMT SOIC-Narrow-16 Tube

Analog Devices / Maxim Integrated Switching Controllers High-Voltage,Step-Dwn Cntrlr w/Synchrono
Datasheet
450In Stock
Min.: 1
Mult.: 1

Buck 1 Output 300 kHz 96 % 3 V, 5 V, 2.5 V to 6 V 10 A - 40 C + 85 C SMD/SMT SOIC-16 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Dropout, Wide-Input-Voltage, Step-Do
Datasheet
422In Stock
Min.: 1
Mult.: 1

Buck 1 Output 200 kHz to 1.4 MHz 99.5 % 600 mV to 28 V 20 A - 40 C + 85 C SMD/SMT TQFN-16 Tube
Richtek Switching Controllers Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs
Datasheet
2.907In Stock
Min.: 1
Mult.: 1
: 1.500

Buck 4 Output 300 kHz, 355 kHz 98 % Adjustable 100 mA - 40 C + 85 C SMD/SMT WQFN-20 Reel, Cut Tape
Richtek Switching Controllers Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs
Datasheet
2.444In Stock
Min.: 1
Mult.: 1
: 3.000

Buck 4 Output 500 kHz, 600 kHz 98 % Adjustable 100 mA - 40 C + 125 C SMD/SMT WQFN-20 Reel, Cut Tape
onsemi Switching Controllers MULTI-PHASE CONTROLLER WITH I2C INTERFACE FOR DRMOS
Datasheet
1.419In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 200 kHz to 1.2 MHz 100 % 600 mV to 5.3 V 52.5 uA - 40 C + 100 C SMD/SMT QFN-52 Reel, Cut Tape, MouseReel
onsemi Switching Controllers 8 PHASE CONTROLLER WITH O
Datasheet
4.853In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5.000

Buck 250 kHz to 1.2 MHz 100 % 3.5 V - 10 C + 100 C SMD/SMT QFN-40 Reel, Cut Tape, MouseReel
onsemi Switching Controllers SWITCHING REGULATOR
Datasheet
2.325In Stock
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 100 kHz to 500 kHz 100 % 8 V 230 mA - 40 C + 150 C SMD/SMT SOIC-8 AEC-Q100 Reel, Cut Tape
onsemi Switching Controllers AUTOMOTIVE SWITCHER
Datasheet
2.988In Stock
Min.: 1
Mult.: 1
: 4.000

Buck 2 Output 2 MHz 90 % 3.3 V, 5 V 400 mA - 40 C + 150 C SMD/SMT QFNW-20 AEC-Q101 Reel, Cut Tape
Torex Semiconductor Switching Controllers 25V Input Synchronous Step-Down DCDC Converter
Datasheet
3.000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 300 kHz 98 % 1.5 V to 15 V 5 A - 40 C + 85 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel
Torex Semiconductor Switching Controllers 16V Input Step-Down DCDC Controller
Datasheet
3.000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 500 kHz 100 % Adjustable 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-LM25085ASDE/NOPB
Datasheet
909In 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 LLP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085MME/NOPB
Datasheet
1.530In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.500

Buck 1 Output 1 MHz 100 % 1.25 V to 42 V 1.75 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers WIDE RANGE SYNC BUCK CONTROLLER A 926-LM A 926-LM25116MHX/NOPB
Datasheet
487In Stock
Min.: 1
Mult.: 1

Buck 1 Output 590 kHz 85 % 1.215 V to 36 V 10 A - 40 C + 125 C SMD/SMT HTSSOP-20 Tube

Texas Instruments Switching Controllers 6-42V Wide Vin Curr ent Mode Synchronous A 926-LM25116MH/NOPB
Datasheet
1.706In Stock
MouseReel Available
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 4.5-42V Wide Vin Cu rrent Mode Dual Sync A 926-LM25119PSQE/NOPB
Datasheet
1.357In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Buck 2 Output 50 kHz to 750 kHz 95 % 800 mV to 41.3 V 40 A - 40 C + 125 C SMD/SMT WQFN-32 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Dua l Sync Buck Cntlr A A 926-LM25119PSQ/NOPB
Datasheet
463In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 2 Output 50 kHz to 750 kHz 95 % 800 mV to 41.3 V 40 A - 40 C + 125 C SMD/SMT WQFN-32 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MHE/NOPB A 926-LM3150MHE/NOPB
Datasheet
1.018In Stock
Min.: 1
Mult.: 1

Buck 1 Output 1 MHz 96 % 600 mV 12 A - 40 C + 125 C SMD/SMT HTSSOP-14 Tube

Texas Instruments Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MH/NOPB A A 926-LM3150MH/NOPB
Datasheet
1.866In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1 MHz 96 % 600 mV 12 A - 40 C + 125 C SMD/SMT HTSSOP-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3475MFX/NOPB
Datasheet
4.556In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Buck 1 Output 1.4 MHz 100 % 800 mV to 10 V 5 A - 40 C + 125 C SMD/SMT SOT-23-5 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 10-V hysteretic PFE T buck controller 5- A 926-LM3475MF/NOPB
Datasheet
5.442In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 2 MHz 100 % 800 mV to 10 V 5 A - 40 C + 125 C SMD/SMT SOT-23-5 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3485MMX/NOPB
Datasheet
9.162In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Buck 1 Output 50 kHz to 1 MHz 100 % 1.242 V to 35 V 4 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel