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
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Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT
Datasheet
1.246In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 450 kHz 100 % 1.2 V to 6.5 V 3 A - 40 C + 85 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current Mode
Datasheet
733In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 5 V 200 mA 0 C + 70 C SMD/SMT SOIC-14 Tube
Texas Instruments Switching Controllers High Speed PWM Contr oller A 595-UC2823D A 595-UC2823DWTR
Datasheet
239In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A - 25 C + 85 C SMD/SMT SOIC-16 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Small, 4.5V to 28V Wide Operat
Datasheet
1.000In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.000

Buck 1 Output 200 kHz to 2 MHz 88 % 600 mV to 28 V 15 A - 40 C + 125 C SMD/SMT TDFN-EP-14 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection
Datasheet
227In Stock
Min.: 1
Mult.: 1
Max.: 224

Boost, Buck 1 Output 80 kHz to 600 kHz 95 % 100 V 40 A - 40 C + 150 C SMD/SMT TSSOP-38 Tube
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
768In Stock
Min.: 1
Mult.: 1
Max.: 768

Buck 2 Output 300 kHz 99 % 1.26 V to 2.5 V 240 A 0 C + 70 C SMD/SMT SSOP-28 Tube

Analog Devices / Maxim Integrated Switching Controllers 40V, High-Performance, Synchronous Buck
Datasheet
2.475In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 2.475

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 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
Max.: 2.197

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
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr
Datasheet
2.064In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 2.064

Buck 1 Output 320 kHz to 2.25 MHz 98 % 800 mV to 24 V 20 A - 40 C + 125 C SMD/SMT QFN-20 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers GSM Power Management System
Datasheet
999In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 999

Boost, Buck 1 Output 300 kHz 98 % 5 mA - 40 C + 125 C SMD/SMT TSSOP-16 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
Max.: 1.458

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

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
Max.: 2.404

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
Max.: 539

Buck 2 Output 1.25 MHz 100 % 500 mV to 5.5 V 2 A - 40 C + 85 C SMD/SMT QSOP-16 Tube
Analog Devices Switching Controllers 60V Low IQ Buck Ctlr
Datasheet
619In Stock
Min.: 1
Mult.: 1
Max.: 619

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 L IQ, 38V Sync Boost+Buck Cntr
Datasheet
477In Stock
Min.: 1
Mult.: 1
Max.: 477

Boost, Buck 2 Output 850 kHz 100 % 800 mV to 60 V 20 A - 40 C + 125 C SMD/SMT QFN-32 Tube
Richtek Switching Controllers Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs
Datasheet
607In 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
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
165In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT MSOP-8 Tube
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
69In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C Through Hole DIP-8 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Wide Input Range, Step-Down Co
Datasheet
1.352In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1.352

Buck 1 Output 300 kHz 95 % 800 mV to 23 V 15 A - 40 C + 85 C SMD/SMT UMAX-10 Reel, Cut Tape, MouseReel
Richtek Switching Controllers 12V Green Voltage Mode High Efficiency Synchronous Buck PWM Controller
Datasheet
1.497In Stock
Min.: 1
Mult.: 1
: 1.500

Buck 2 Output 300 kHz 88 % 5 V to 12 V 4 mA - 40 C + 85 C SMD/SMT WDFN-10 Reel, Cut Tape

Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
125In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C SMD/SMT SOIC-14 Tube
Analog Devices Switching Controllers Hi Speed C Mode Pulse Width Mods
Datasheet
336In Stock
Min.: 1
Mult.: 1
Max.: 336

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
Max.: 355

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
Max.: 128

Boost, Buck 1 Output 150 kHz 90 % Adjustable 30 A 0 C + 70 C SMD/SMT SOIC-20 Tube