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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Infineon Technologies Switching Controllers 10A DC/DC Step Down Synch Controller
Datasheet
2.148In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 100 kHz to 700 kHz 99 % Adjustable 10 A - 40 C + 150 C SMD/SMT SSOP-14 AEC-Q100 Reel, Cut Tape, MouseReel
Infineon Technologies Switching Controllers 10A DC/DC Step Down Synch Controller
Datasheet
1.047In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 100 kHz to 700 kHz 99 % Adjustable 10 A - 40 C + 150 C SMD/SMT SSOP-14 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477MMX/NOPB
Datasheet
1.138In 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 HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3489MMX/NOPB
Datasheet
4.660In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Buck 1 Output 1.4 MHz 100 % 1.239 V to 35 V 4 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Hysteretic PFET Buck Cntlr w/ Enable Pin A 926-LM3489QMMX/NOPB
Datasheet
1.381In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Buck 1 Output 1 MHz to 1.4 MHz 100 % 1.239 V to 35 V 4 A - 40 C + 125 C SMD/SMT VSSOP-8 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PMHE/NOPB
Datasheet
463In 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 Tube

Texas Instruments Switching Controllers 5.5-65V Wide Vin Cu rrent Mode Synchrono A 595-LM5117PMHE/NOPB
Datasheet
2.720In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 50 kHz to 750 kHz 98 % 800 mV to 62 V 20 A - 40 C + 125 C SMD/SMT HTSSOP-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
2.807In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 65 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
2.954In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 65 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
2.851In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 65 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
1.897In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 100 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
1.296In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 100 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
2.975In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 100 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
2.896In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.001
: 3.000

Buck 1 Output 100 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with Light Load Mode Selection
Datasheet
4.208In Stock
MouseReel Available
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, MouseReel
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 Dual/2phase Cntrl in LD20 Process
Datasheet
585In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

Buck 2 Output 200 kHz to 1.5 MHz 90 % 600 mV to 18 V 25 A - 40 C + 85 C SMD/SMT LFCSP-32 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers Hi Speed C Mode Pulse Width Mods
Datasheet
394In 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 Speed C Mode Pulse Width Mods
Datasheet
469In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz 96 % 5 V 1 A 0 C + 100 C SMD/SMT SOIC-8 Tube
Analog Devices Switching Controllers Hi Pwr Sync DC/DC Cntr
Datasheet
149In Stock
152Expected 3/3/2027
Min.: 1
Mult.: 1

Boost, Buck 1 Output 150 kHz 90 % Adjustable 30 A - 40 C + 85 C SMD/SMT SOIC-20 Tube
Analog Devices Switching Controllers Hi C Supercap Backup Cntr & S Mon
Datasheet
1.337In Stock
5.200On Order
Min.: 1
Mult.: 1
Max.: 676

Boost, Buck 1 Output 500 kHz 99.5 % 35 V 10 A - 40 C + 125 C SMD/SMT QFN-38 Tube
Analog Devices Switching Controllers Hi C Supercap Backup Cntr & S Mon
Datasheet
879In Stock
Min.: 1
Mult.: 1
Max.: 104

Boost, Buck 1 Output 500 kHz 99.5 % 35 V 10 A - 40 C + 125 C SMD/SMT QFN-38 Tube
Analog Devices Switching Controllers 2x Out PolyPhBuck Cntr w/ Sub-Milliohm D
Datasheet
155In Stock
Min.: 1
Mult.: 1

Buck 1 Output 1 MHz 80 % 500 mV to 5.5 V 30 A - 40 C + 125 C SMD/SMT QFN-48 Tube
Analog Devices Switching Controllers 150V Low IQ Step-Dwn DC/DC Ctlr
Datasheet
848In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 50 kHz to 850 kHz 100 % 800 mV to 60 V - 40 C + 125 C SMD/SMT TSSOP-20-16 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 150V L IQ, Sync Buck DC/DC Cntr
Datasheet
399In Stock
868Expected 3/11/2027
Min.: 1
Mult.: 1

Buck 1 Output 50 kHz to 900 kHz 100 % 800 mV to 60 V 65 uA - 40 C + 150 C SMD/SMT TSSOP-24 Tube