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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Results: 773
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Qty. RoHS ECAD Model Topology
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Input Voltage
Output Voltage
Output Current
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Analog Devices / Maxim Integrated Switching Controllers High-Voltage, Step-Down DC-DC Controller in MAX
Datasheet
722In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 330 kHz 100 % 3.3 V, 5 V 10 A - 40 C + 85 C SMD/SMT UMAX-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-V to 20-V voltage mode synchronous bu A 926-LM27402SQX/NOPB
Datasheet
1 189In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 1 Output 200 kHz to 1.2 MHz 95 % 600 mV to 18.6 V 30 A - 40 C + 125 C SMD/SMT WQFN-16 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
770In Stock
Min.: 1
Mult.: 1

Buck 2 Output 300 kHz 99 % 1.26 V to 2.5 V 240 A 0 C + 70 C SMD/SMT SSOP-28 Tube
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40303DRCT
Datasheet
6 866In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 300 kHz 90 % 600 mV to 18 V 10 A - 40 C + 125 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers High Speed PWM Contr oller
Datasheet
74In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 2 Output 1 MHz 100 % 5.1 V 2 A - 40 C + 85 C Through Hole PDIP-16 Tube
Texas Instruments Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-3
Datasheet
2 094In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 4.1 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
2 197In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 300 kHz 100 % 1.3 V to 16 V 3 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Reel, Cut Tape, MouseReel
Nisshinbo Switching Controllers Buck DC/DC Controller
Datasheet
3 103In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 180 kHz 100 % 1 V to 18.5 V - 40 C + 85 C SMD/SMT SOT-23-5 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
2 282In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL
Datasheet
1 464In 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
9 072In 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 3V-20V Wide Inp Sync Buck Controller A 5 A 595-TPS40304ADRCT
Datasheet
2 963In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 600 kHz 90 % 600 mV to 18 V 25 A - 40 C + 145 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCR
Datasheet
1 989In 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
Texas Instruments Switching Controllers Triple Sync Buck w/L DO Controller A 595 A 595-TPS5130PT
Datasheet
880In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 4 Output 50 kHz to 500 kHz 97 % 900 mV to 8.5 V 15 A - 40 C + 85 C SMD/SMT LQFP-48 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK
Datasheet
4 027In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 18 V 1 A 0 C + 70 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Switching Controllers 40V, High-Performance, Synchronous Buck
Datasheet
971In 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 654In 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 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
713In 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 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
Infineon Technologies Switching Controllers 10A DC/DC Step Down Synch Controller
Datasheet
2 312In 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 75V On-Time PFET Buc k Switching Cntlr A A 926-LM5085MM/NOPB
Datasheet
1 634In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1 MHz 100 % 1.25 V to 75 V 1.75 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers 75V DC-DC Buck Controller with HLL
Datasheet
1 691In 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
Analog Devices Switching Controllers 60V Low IQ Buck Ctlr
Datasheet
659In Stock
Min.: 1
Mult.: 1

Buck 5 Output 1 MHz to 3 MHz 100 % 3.3 V, 5 V 8 A - 40 C + 125 C SMD/SMT QFN-48 Tube
Analog Devices Switching Controllers Hi Pwr Sync DC/DC Cntr
Datasheet
838In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 150 kHz 90 % Adjustable 30 A - 40 C + 85 C SMD/SMT SOIC-20 Tube
Texas Instruments Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM25141RGER
Datasheet
560In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 440 kHz, 2.2 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 20 A - 40 C + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel