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 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
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
658In Stock
Min.: 1
Mult.: 1
Max.: 635

Buck 2 Output 300 kHz 99 % 1.26 V to 2.5 V 240 A - 40 C + 85 C SMD/SMT SSOP-28 Tube
Analog Devices Switching Controllers Low IQ Triple Output Buck-Buck-Boost CTL
Datasheet
485In Stock
Min.: 1
Mult.: 1
Max.: 485

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

Microchip Technology Switching Controllers 36V, Dual Phase COT Buck Controller, Stackable Feature
Datasheet
3 370In Stock
Min.: 1
Mult.: 1
: 3 300

Buck 1 Output 100 kHz to 1 MHz 85 % 4.5 V to 36 V Adjustable - 40 C + 125 C SMD/SMT VQFN-32 Reel, Cut Tape
ROHM Semiconductor Switching Controllers PWM Type DC/DC Converter IC Included a Switching MOSFET
Datasheet
2 000In 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 38V DC-DC Buck Controller with HSC
Datasheet
4 238In 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 36V, Dual Phase COT Buck Controller, HLL & Phase Shedding
Datasheet
3 290In Stock
Min.: 1
Mult.: 1
: 3 300

Buck 1 Output 100 kHz to 1 MHz 85 % Adjustable - 40 C + 125 C SMD/SMT Reel, Cut Tape

Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117QPMHE/NOPB
Datasheet
281In 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 AEC-Q100 Tube

Microchip Technology Switching Controllers 76V Synchronous Buck Controller
Datasheet
388In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz 96 % Adjustable 15 A - 40 C + 125 C SMD/SMT MSOP-10 Tube
Texas Instruments Switching Controllers Dual DDR selectable Sync buck Controller A 595-TPS51020DBT
Datasheet
891In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

Buck 2 Output 450 kHz 88 % 900 mV 15 A - 40 C + 85 C SMD/SMT TSSOP-30 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Triple Sync Buck w/L DO Controller A 595 A 595-TPS5130PTR
Datasheet
141In Stock
Min.: 1
Mult.: 1

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 Tray
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
Torex Semiconductor Switching Controllers 16V Input Step-Down DCDC Controller
Datasheet
2 944In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 1 MHz 100 % Adjustable 3 A - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers N-CH FET Sync Buck R eg Cntlr A 926-LM27 A 926-LM2727MTCX/NOPB
Datasheet
488In Stock
Min.: 1
Mult.: 1

Buck 1 Output 2 MHz 90 % 600 mV to 5 V 20 A 0 C + 125 C SMD/SMT TSSOP-14 Tube
Texas Instruments Switching Controllers Multiphase bidirecti onal current contro A 595-LM5170PHPR
Datasheet
245In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Boost, Buck 2 Output 50 kHz to 500 kHz 99 % 100 mV to 100 V 50 A - 40 C + 125 C SMD/SMT TQFP-48 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive grade 4.5 -42V wide VIN curre A 595-LM25119QPSQXNOPB
Datasheet
1 895In 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 4.5-14V Inp Synch Bu ck Cntrlr A 595-TPS A 595-TPS40197RGYT
Datasheet
2 994In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 520 kHz 85 % 900 mV to 1.2 V 6 A - 40 C + 85 C SMD/SMT VQFN-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers High Speed Vltg Mode A 595-UCC35705D A 5 A 595-UCC35705D
Datasheet
2 278In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 4 MHz 93 % 20 mA 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
onsemi Switching Controllers INDUSTRIAL TEMP RANGE I
Datasheet
2 103In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 2 Output 300 kHz to 1.4 MHz 100 % 3.5 V 800 uA - 40 C + 100 C SMD/SMT QFN-52 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers High Speed PWM Contr oller
Datasheet
214In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A - 25 C + 85 C Through Hole PDIP-16 Tube
Texas Instruments Switching Controllers CVCC Flyback Cntlr w / Primary-Side Reg A 595-UCC28722DBVT
Datasheet
4 421In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck, Flyback 1 Output 650 Hz to 80 kHz 99 % 21 V 37 mA - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Richtek Switching Controllers Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs
Datasheet
1 542In Stock
Min.: 1
Mult.: 1
: 1 500

Buck 4 Output 400 kHz, 475 kHz 98 % Adjustable 100 mA - 40 C + 85 C SMD/SMT WQFN-20 Reel, Cut Tape

Torex Semiconductor Switching Controllers 2ch.Step-Down DC/DC Controller Ics
Datasheet
819In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 2 Output 300 kHz 100 % 900 mV to 10 V 1 A - 40 C + 85 C SMD/SMT MSOP-10 Reel, Cut Tape, MouseReel