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: 548
Select Image Part # Mfr. Description Datasheet Availability Pricing (EUR) 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 AC Low Iq dual Sync Buck Cntrlr 1.850In Stock
Cut Tape
4,89 €
3,73 €
3,44 €
3,11 €
Reel
2,80 €
Min.: 1
Mult.: 1
: 2.000
Buck 2 Output 150 kHz to 600 kHz 98.75 % 5 V 6 A - 40 C + 125 C SMD/SMT HTSSOP-38 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Auto Cat Tr Synch Bu ck Controller 993In Stock
Cut Tape
10,08 €
7,89 €
7,34 €
6,74 €
Reel
6,14 €
Min.: 1
Mult.: 1
: 1.000
Buck 4 Output 50 kHz to 500 kHz 97 % 900 mV to 8.5 V 15 A - 40 C + 125 C SMD/SMT LQFP-48 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWP 1.627In Stock
Cut Tape
3,84 €
3,04 €
2,83 €
2,60 €
2,48 €
Reel
2,47 €
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 High Speed PWM Contr oller A 595-UC2823D A 595-UC2823DWTR 199In Stock
6,75 €
5,22 €
4,68 €
4,10 €
Min.: 1
Mult.: 1
Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A - 25 C + 85 C SMD/SMT SOIC-16 Tube
Texas Instruments Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT 2.251In Stock
Cut Tape
3,32 €
2,82 €
2,59 €
2,34 €
Reel
2,01 €
Min.: 1
Mult.: 1
: 3.000
Buck 2 Output 200 kHz to 1 MHz 99 % 1 V to 12 V 20 A - 40 C + 85 C SMD/SMT VQFN-32 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D 1.919In Stock
Cut Tape
1,30 €
0,946 €
0,858 €
0,762 €
Reel
0,626 €
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 5 V 200 mA 0 C + 70 C SMD/SMT SOIC-14 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842N
890In Stock
1,90 €
1,40 €
1,26 €
1,13 €
Min.: 1
Mult.: 1
Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 5 V 200 mA 0 C + 70 C Through Hole PDIP-8 Tube
Texas Instruments Switching Controllers Two-Phase Sync SD Sw itching Cntlr 375In Stock
4,46 €
3,40 €
2,80 €
2,63 €
2,56 €
Min.: 1
Mult.: 1
Max.: 1.001
Buck 2 Output 300 kHz 98 % 1.3 V to 30 V 20 A - 40 C + 125 C SMD/SMT TSSOP-28 Tube
Texas Instruments Switching Controllers High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB 986In Stock
Cut Tape
2,22 €
1,65 €
1,51 €
1,36 €
Reel
1,18 €
Min.: 1
Mult.: 1
: 1.000
Buck 1 Output 300 kHz 91 % 800 mV to 4.6 V 20 A - 40 C + 125 C SMD/SMT MSOP-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd 2.626In Stock
Cut Tape
3,35 €
2,55 €
Reel
2,55 €
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 100 kHz to 1 MHz 95 % 700 mV to 23 V 20 A - 40 C + 85 C SMD/SMT VQFN-20 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
3,01 €
2,27 €
2,08 €
1,87 €
Reel
1,57 €
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 Current-Mode NB Sys Pwr Controller 2.517In Stock
Cut Tape
3,89 €
3,33 €
3,05 €
2,76 €
Reel
2,38 €
Min.: 1
Mult.: 1
: 3.000
Buck 2 Output 200 kHz to 1 MHz 99 % 1 V to 12 V 20 A - 40 C + 85 C SMD/SMT WQFN-32 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 80V 100 % duty-cycle capable 9.164In Stock
Cut Tape
4,54 €
3,46 €
3,19 €
2,89 €
Reel
2,55 €
Min.: 1
Mult.: 1
: 2.500
Buck 2 Output 2.42 MHz 100 % 4 V to 80 V 800 mV to 60 V - 40 C + 150 C SMD/SMT VQFN-36 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR
2.787In Stock
Cut Tape
0,843 €
0,60 €
0,541 €
0,476 €
Reel
0,393 €
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 5 V 200 mA 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD 1.971In Stock
Cut Tape
1,08 €
0,787 €
0,712 €
0,63 €
Reel
0,526 €
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 5 V 200 mA 0 C + 70 C SMD/SMT SOIC-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode ALT 595-U ALT 595-UCC38C42DR
1.588In Stock
Cut Tape
0,92 €
0,662 €
0,596 €
0,525 €
Reel
0,433 €
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 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB 834In Stock
Cut Tape
2,63 €
1,97 €
1,81 €
1,63 €
Reel
1,36 €
Min.: 1
Mult.: 1
: 2.500
Buck 1 Output 50 kHz to 1 MHz 86 % 600 mV to 13.5 V 20 A - 40 C + 125 C SMD/SMT TSSOP-14 Reel, Cut Tape, MouseReel
Torex Semiconductor Switching Controllers Step-Up & Step-Down 180kHz DCDC Controller 85In Stock
Cut Tape
1,34 €
0,98 €
0,886 €
0,785 €
Reel
0,674 €
Min.: 1
Mult.: 1
: 3.000
Boost, Buck 1 Output 180 kHz 92 % 5 V 250 mA - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel
Richtek Switching Controllers Single Phase PWM Controller with Light Load Efficiency Optimization 1.498In Stock
Cut Tape
0,714 €
0,499 €
0,447 €
0,39 €
Reel
0,325 €
Min.: 1
Mult.: 1
: 1.500
Buck 2 Output 200 kHz 95 % 800 mV to 3.3 V 150 mA - 40 C + 85 C SMD/SMT WQFN-16 Reel, Cut Tape
Torex Semiconductor Switching Controllers 16V Input Step-Down DCDC Controller 55In Stock
Cut Tape
1,19 €
0,86 €
0,778 €
0,688 €
Reel
0,586 €
Min.: 1
Mult.: 1
: 3.000
Buck 1 Output 500 kHz 100 % Adjustable 3 A - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel
Torex Semiconductor Switching Controllers High Efficiency, Synchronous Step-Up & Down DC / DC Controller 68In Stock
Cut Tape
2,35 €
1,75 €
1,60 €
1,44 €
Reel
1,28 €
Min.: 1
Mult.: 1
: 1.000
Boost, Buck 1 Output 300 kHz 88 % 2 V to 6 V 800 mA - 40 C + 85 C SMD/SMT MSOP-8 Reel, Cut Tape, MouseReel
Richtek Switching Controllers 12V Green Voltage Mode High Efficiency Synchronous Buck PWM Controller 1.497In Stock
Cut Tape
0,731 €
0,513 €
0,46 €
0,402 €
Reel
0,334 €
Min.: 1
Mult.: 1
: 1.500
Buck 2 Output 300 kHz 88 % 5 V to 12 V 4 mA - 40 C + 85 C SMD/SMT WDFN-10 Reel, Cut Tape

Microchip Technology Switching Controllers Monolithic SMPS Controller 125In Stock
2,94 €
2,68 €
2,46 €
2,28 €
2,24 €
Min.: 1
Mult.: 1
Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C SMD/SMT SOIC-14 Tube
Richtek Switching Controllers Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs 499In Stock
Cut Tape
1,16 €
0,841 €
0,761 €
0,673 €
Reel
0,576 €
Min.: 1
Mult.: 1
: 1.500
Buck 4 Output 300 kHz, 355 kHz 98 % Adjustable 100 mA - 40 C + 85 C SMD/SMT WQFN-20 Reel, Cut Tape
Microchip Technology Switching Controllers Monolithic SMPS Controller 64In Stock
2,04 €
1,69 €
1,53 €
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