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
Select Image Part # Mfr. Description Datasheet Availability Pricing (SGD) 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 Mounting Style Package/Case Qualification Packaging
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVT 2,830In Stock
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 350 kHz 100 % 1.2 V to 6.5 V 3 A - 40 C + 85 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Small, 4.5V to 28V Wide Operat 1,000In Stock
Min.: 1
Mult.: 1
: 2,500

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
Microchip Technology Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start 6,704In 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 Hi Speed C Mode Pulse Width Mods 355In 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 Pwr Sync DC/DC Cntr 128In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 150 kHz 90 % Adjustable 30 A 0 C + 70 C SMD/SMT SOIC-20 Tube
Analog Devices Switching Controllers Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection 150In 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 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 396In 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

Torex Semiconductor Switching Controllers 16V Step-Down DCDC Controller 2,750In Stock
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 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085SDE/NOPB 3,000In Stock
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 1 MHz 100 % 1.25 V to 42 V 1.75 A - 40 C + 125 C SMD/SMT LLP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477AMMX/NOPB 811In Stock
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 High Efficiency High -Side N-Channel Con A 926-LM3477MM/NOPB 4,032In Stock
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 6,968In Stock
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 Monolithic High Speed SMPS Controller 1,960In Stock
Min.: 1
Mult.: 1
: 2,500

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Digitally enhanced power analog buck controller 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 Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MH/NOPB 339In Stock
Min.: 1
Mult.: 1
: 250

Boost, Buck 1 Output 500 kHz 80 % 1.23 V to 38 V 4 A - 40 C + 125 C SMD/SMT HTSSOP-20 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MHENOPB 2,832In Stock
Min.: 1
Mult.: 1
: 2,500

Boost, Buck 1 Output 500 kHz 80 % 1.23 V to 38 V 4 A - 40 C + 125 C SMD/SMT HTSSOP-20 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn ch Buck Cntrlr A 59 A 595-TPS40304DRCR 4,976In Stock
Min.: 1
Mult.: 1
: 250

Buck 1 Output 600 kHz 90 % 600 mV to 18 V 25 A - 40 C + 125 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085AMME/NOPB 920In Stock
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 1 MHz 100 % 900 mV to 42 V 1.75 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTC/NOPB 3,093In Stock
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
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr 2,064In Stock
Min.: 1
Mult.: 1
: 2,500

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 999In Stock
Min.: 1
Mult.: 1
: 1,000

Boost, Buck 1 Output 300 kHz 98 % 5 mA - 40 C + 125 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4 Ch Multiphase Buck DC/DC Controller A A 595-TPS40090PW 985In Stock
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 100 kHz to 1 MHz 87.5 % 700 mV to 3.3 V 120 A - 40 C + 85 C SMD/SMT TSSOP-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCT 2,760In Stock
Min.: 1
Mult.: 1
: 3,000

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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C42DGKR 955In Stock
Min.: 1
Mult.: 1

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