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: 687
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 5,226In Stock
Cut Tape
$5.58
$4.93
$4.73
$4.38
Reel
$3.74
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
Texas Instruments Switching Controllers Wide In Non-Sync Buc k DC/DC Cntrlr 29,597In Stock
Cut Tape
$2.47
$1.84
$1.68
$1.50
Reel
$1.23
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

Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 926- A 926-LM5117PMH/NOPB 453In Stock
Cut Tape
$7.46
$5.76
$5.33
$4.86
Reel
$4.28
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 3,384In Stock
Cut Tape
$2.52
$1.87
$1.71
$1.53
Reel
$1.23
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 1,087In Stock
$2.74
$2.05
$1.69
$1.60
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
Nisshinbo Switching Controllers Buck DC/DC Controller 3,093In Stock
Cut Tape
$1.54
$1.13
$1.03
$0.907
Reel
$0.72
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 Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP 2,050In Stock
Cut Tape
$4.13
$3.13
$2.87
$2.60
Reel
$2.25
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
Cut Tape
$1.36
$1.11
$1.01
$0.893
Reel
$0.745
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 Sgl Sync SD Cntrlr A 595-TPS53014DGS A 5 A 595-TPS53014DGS 2,148In Stock
Cut Tape
$2.65
$1.98
$1.81
$1.62
Reel
$1.36
Min.: 1
Mult.: 1
: 2,500
Buck 1 Output 500 kHz 83 % 760 mV to 7 V 25 A - 40 C + 85 C SMD/SMT MSOP-10 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK 4,009In Stock
Cut Tape
$2.35
$1.74
$1.59
$1.42
Reel
$1.23
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 Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWP 1,627In Stock
Cut Tape
$4.47
$3.53
$3.29
$3.02
$2.88
Reel
$2.87
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 3,975In Stock
Cut Tape
$0.93
$0.669
$0.603
$0.53
Reel
$0.421
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
Cut Tape
$4.08
$3.09
$2.84
$2.57
Reel
$2.18
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
Microchip Technology Switching Controllers Digitally enhanced power analog buck controller 3,299In Stock
Cut Tape
$5.97
$4.98
Reel
$4.52
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 4.5V-20V Buck Cntrlr A 595-TPS40195RGYT A 595-TPS40195RGYT 4,368In Stock
Cut Tape
$3.61
$2.69
$2.46
$2.21
Reel
$1.87
Min.: 1
Mult.: 1
: 3,000
Buck 1 Output 600 kHz 85 % 591 mV to 17 V 20 A - 40 C + 85 C SMD/SMT VQFN-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Dual Output 2-Ph Syn ch Buck Cntrlr A 59 A 595-TPS5120DBT 1,699In Stock
Cut Tape
$10.52
$8.21
$7.64
$7.00
Reel
$6.06
Min.: 1
Mult.: 1
: 2,000
Buck 2 Output 100 kHz to 500 kHz 83 % 900 mV to 26 V 20 A - 40 C + 85 C SMD/SMT TSSOP-30 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Fixed-Freq Notebook Sys Pwr Cntrlr A 595 A 595-TPS51222RTVR 208In Stock
Cut Tape
$11.23
$8.79
$8.18
$7.51
Reel
$6.79
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 3-28V In 20A Synch S tep Down Cntrlr A 5 A 595-TPS51218DSCT 2,885In Stock
Cut Tape
$2.53
$1.88
$1.71
$1.54
Reel
$1.29
Min.: 1
Mult.: 1
: 3,000
Buck 1 Output 465 kHz 91 % 700 mV to 2.6 V 20 A - 40 C + 85 C SMD/SMT WSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVT 2,830In Stock
Cut Tape
$1.75
$1.29
$1.17
$1.05
Reel
$0.861
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
Texas Instruments Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1 2,912In Stock
Cut Tape
$7.92
$6.13
$5.68
$5.19
Reel
$4.60
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
Cut Tape
$3.50
$2.64
$2.42
$2.18
Reel
$1.82
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 2,555In Stock
Cut Tape
$1.75
$1.29
$1.17
$1.05
Reel
$0.874
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
Analog Devices / Maxim Integrated Switching Controllers Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7 A IQ and Optional Bypass Mode
5,492In Stock
$8.81
$6.84
$6.35
$5.80
Min.: 1
Mult.: 1
Max.: 4,393
Buck 1 Output 220 kHz to 2.2 MHz 99 % 5 V - 40 C + 125 C SMD/SMT TQFN-EP-20 Tray
Analog Devices Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL
8,928In Stock
Cut Tape
$8.75
$6.86
$6.11
$5.74
$5.52
Reel
$4.81
Min.: 1
Mult.: 1
Max.: 7,142
: 2,500
Boost, Buck 2 Output 3 MHz 100 % 800 mV to 40 V 180 uA - 40 C + 150 C SMD/SMT QFN-28 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40192DRCT 4,741In Stock
Cut Tape
$2.89
$2.16
$1.98
$1.78
Reel
$1.44
Min.: 1
Mult.: 1
: 3,000
Buck 1 Output 600 kHz 85 % 591 mV to 14.4 V 20 A - 40 C + 85 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel