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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Output Voltage
Output Current
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Analog Devices Switching Controllers Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection
Datasheet
178In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 80 kHz to 600 kHz 95 % 100 V 40 A - 40 C + 125 C SMD/SMT TSSOP-38 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
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift
Datasheet
444In Stock
Min.: 1
Mult.: 1

Boost, Buck 4 Output 1 MHz 100 % 5 V 100 mA 0 C + 70 C Through Hole PDIP-20 Tube

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 995In 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 Digitally enhanced power analog buck controller
Datasheet
3 299In Stock
Min.: 1
Mult.: 1
: 3 300

Buck 1 Output 100 kHz to 1.6 MHz 100 % 300 mV to 16 V 4 A - 40 C + 125 C SMD/SMT QFN-28 Reel, Cut Tape
Texas Instruments Switching Controllers High Perf Sync Buck Cntlr A 595-LM27403S A 595-LM27403SQ/NOPB
Datasheet
4 061In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1.05 MHz 93 % 600 mV to 19 V 25 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape, MouseReel
ROHM Semiconductor Switching Controllers PWM Type DC/DC Converter IC Included a Switching MOSFET
Datasheet
5 810In Stock
Min.: 1
Mult.: 1

Buck 1 Output 70 kHz 82 % 8.9 V to 26 V 10.4 A - 40 C + 105 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 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTC/NOPB
Datasheet
3 113In 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
Microchip Technology Switching Controllers 75V, Dual Phase Advanced COT PWM Controller
Datasheet
3 571In Stock
Min.: 1
Mult.: 1
: 3 300

Buck 1 Output 100 kHz to 1 MHz 85 % 600 mV to 28 V 100 mA - 40 C + 125 C SMD/SMT VQFN-32 Reel, Cut Tape
onsemi Switching Controllers CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS
Datasheet
2 951In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 2.4 MHz 100 % 1.36 V - 40 C + 125 C SMD/SMT DFNW-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Lo Vtg N-Ch MOSFET S ync Buck Reg Cntlr A 926-LM2743MTC/NOPB
Datasheet
2 516In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 50 kHz to 1 MHz 80 % Adjustable 4 A - 40 C + 125 C SMD/SMT TSSOP-14 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 03-5 Amp non synchronous buck controller
Datasheet
1 048In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 580 kHz 100 % 800 mV to 14 V 5 A - 40 C + 125 C SMD/SMT TSOT-6 Reel, Cut Tape, MouseReel
Infineon Technologies Switching Controllers COOLSET
Datasheet
1 930In Stock
Min.: 1
Mult.: 1
Buck, Flyback 1 Output 65 kHz 80 % 15 V - 40 C + 150 C Through Hole DIP-7 Tube
Texas Instruments Switching Controllers High Perf Sync Buck Controller A 595-LM2 A 595-LM27403SQE/NOPB
Datasheet
1 008In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 1 Output 1.05 MHz 93 % 600 mV to 19 V 30 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr ALT ALT 595-TPS40200DR
Datasheet
Product Comments
2 752In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 35 kHz to 500 kHz 95 % 700 mV to 46 V 3 A - 40 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel

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 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

Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
216In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT SOIC-14 Tube
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
247In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT SOIC-8 Tube
Analog Devices Switching Controllers L IQ, 2x, 2-PhSync Buck Cntr
Datasheet
23In Stock
Min.: 1
Mult.: 1

Buck 2 Output 400 kHz 99 % 800 mV to 10 V 25 A - 40 C + 85 C SMD/SMT SSOP-28 Tube
Analog Devices / Maxim Integrated Switching Controllers 2.35V to 5.5V, 0.5 Accurate, 1MHz PWM S
Datasheet
20In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz, 1 MHz 92 % 1.5 V, 1.8 V, 2.5 V, 3.3 V 20 A - 40 C + 85 C SMD/SMT QSOP-20 Tube
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