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 (USD) 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 AUTO CAT WIDE-INPUT SYNCH BUCK 5,506In Stock
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 100 kHz to 1 MHz 85 % 700 mV to 35 V 20 A - 40 C + 125 C SMD/SMT HTSSOP-16 AEC-Q100 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 150V L IQ, 2x, 2-PhSync Buck DC/DC Cntr 2,204In Stock
Min.: 1
Mult.: 1

Buck 2 Output 50 kHz to 750 kHz 100 % 1 V to 60 V 105 uA - 40 C + 150 C SMD/SMT LQFP-48 Tray
Texas Instruments Switching Controllers Wide In Non-Sync Buc k DC/DC Cntrlr 29,618In Stock
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
Analog Devices / Maxim Integrated Switching Controllers Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7 A IQ and Optional Bypass Mode 5,675In Stock
Min.: 1
Mult.: 1

Buck 1 Output 220 kHz to 2.2 MHz 99 % 5 V - 40 C + 125 C SMD/SMT TQFN-EP-20 Tray
Microchip Technology Switching Controllers Digitally enhanced power analog buck controller 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 Fixed-Freq Notebook Sys Pwr Cntrlr A 595 A 595-TPS51222RTVR 318In Stock
Min.: 1
Mult.: 1
: 250

Buck 2 Output 200 kHz to 1 MHz 99 % 1 V to 12 V 20 A - 40 C + 85 C SMD/SMT WQFN-32 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-V to 20-V voltage mode synchronous bu A 926-LM27402SQX/NOPB 1,189In Stock
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

Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 926- A 926-LM5117PMH/NOPB 493In Stock
Min.: 1
Mult.: 1
: 250

Buck 1 Output 50 kHz to 750 kHz 98 % 800 mV to 62 V 20 A - 40 C + 125 C SMD/SMT HTSSOP-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3802D 3,765In Stock
Min.: 1
Mult.: 1
: 2,500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTCX/NOPB 1,090In Stock
Min.: 1
Mult.: 1

Buck 1 Output 2 MHz 90 % 600 mV to 5 V 20 A - 40 C + 125 C SMD/SMT TSSOP-14 Tube

Texas Instruments Switching Controllers Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWP 1,877In Stock
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 100 kHz to 1 MHz 98 % 700 mV to 45 V 10 A - 40 C + 85 C SMD/SMT HTSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40D 4,003In Stock
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 SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Two-Phase Sync SD Sw itching Cntlr A 926 A 926-LM2642MTC/NOPB 2,193In Stock
Min.: 1
Mult.: 1
: 2,500

Buck 2 Output 60 kHz 98 % 1.3 V to 30 V 6 A - 40 C + 125 C SMD/SMT TSSOP-28 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQ/NOPB 341In Stock
Min.: 1
Mult.: 1
: 250

Buck 1 Output 50 kHz to 750 kHz 98 % 800 mV to 62 V 20 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP 2,400In Stock
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 1 MHz 93 % 700 mV 20 A - 40 C + 85 C SMD/SMT HTSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3V-20V Wide Inp Sync Buck Controller A 5 A 595-TPS40304ADRCT 2,963In Stock
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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK 4,015In Stock
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
Texas Instruments Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3800D 1,482In Stock
Min.: 1
Mult.: 1
: 2,500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Nisshinbo Switching Controllers Buck DC/DC Controller 3,093In Stock
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
Texas Instruments Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1 2,966In Stock
Min.: 1
Mult.: 1
: 250

Buck 1 Output 2.2 MHz 99 % 1.5 V to 15 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PW A 595 A 595-TPS40195PW 2,344In Stock
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 600 kHz 85 % 591 mV 20 A - 40 C + 85 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64202DBVT 2,556In Stock
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 550 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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40DGK 1,820In Stock
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 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
Texas Instruments Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40193DRCT 1,198In Stock
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 300 kHz 85 % 591 mV to 14.4 V 20 A - 40 C + 85 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel