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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Qty. RoHS ECAD Model Topology
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Texas Instruments Switching Controllers 80-V synchronous buc k DC/DC controller
Datasheet
2.836In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 2.2 MHz 100 % 800 mV to 55 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 30-V lo w -power current-mode
Datasheet
2.089In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck, Flyback 1 Output 1 MHz 100 % 15 V 20 mA - 40 C + 125 C SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 30-V lo w -power current-mode
Datasheet
2.035In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck, Flyback 1 Output 1 MHz 100 % 15 V 20 mA - 40 C + 125 C SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 150V Low IQ Step-Dwn DC/DC Ctlr
Datasheet
6.624In Stock
Min.: 1
Mult.: 1

Buck 1 Output 50 kHz to 850 kHz 100 % 800 mV to 60 V 10 A - 40 C + 125 C SMD/SMT TSSOP-20-16 Tube
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr
Datasheet
2.982In Stock
Min.: 1
Mult.: 1

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 Tube
Analog Devices Switching Controllers 150V L IQ, Sync Buck DC/DC Cntr
Datasheet
2.365In Stock
Min.: 1
Mult.: 1

Buck 1 Output 50 kHz to 900 kHz 100 % 800 mV to 60 V 10 A - 40 C + 125 C SMD/SMT TSSOP-24 Tube
Analog Devices Switching Controllers 150V L IQ, Sync Buck DC/DC Cntr
Datasheet
2.371In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 50 kHz to 900 kHz 100 % 800 mV to 60 V 10 A - 40 C + 125 C SMD/SMT TSSOP-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide In Non-Synch Bu ck DC/DC Cntrlr A 5 A 595-TPS40200HDR
Datasheet
478In Stock
525Expected 9/4/2026
Min.: 1
Mult.: 1

Buck 1 Output 35 kHz to 500 kHz 100 % 700 mV to 46 V 3 A - 55 C + 210 C SMD/SMT SOIC-8 Tube

Texas Instruments Switching Controllers Automotive Grade 4.5 -75V Wide Vin Const A 926-LM5085QMYE/NOPB
Datasheet
10.953In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.500

Buck 1 Output 1 MHz 100 % 1.25 V to 75 V 1.75 A - 40 C + 125 C SMD/SMT MSOP-PowerPad-8 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers WIDE RANGE SYNCH BUC K CONTROLLER A 926- A 926-LM5116MH/NOPB
Datasheet
11.952In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 50 kHz to 1 MHz 98 % 1.215 V to 80 V 20 A - 40 C + 150 C SMD/SMT HTSSOP-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM25141RGER
Datasheet
488In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 440 kHz, 2.2 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 20 A - 40 C + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 6V to 42V Synchronou s Buck DC-DC Contro A 595-LM25145RGYR
Datasheet
1.321In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 100 kHz to 1 MHz 99 % 800 mV to 40 V 30 A - 40 C + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQE/NOPB
Datasheet
1.087In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

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 Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQ/NOPB
Datasheet
341In Stock
MouseReel Available
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 Wide Input Freq Sync h Buck Cntrlr A 595 A 595-TPS40060PWP
Datasheet
1.442In Stock
MouseReel Available
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 AC 4.5-60V Wide-Inp Sync PWM Buck Cntrlr
Datasheet
1.565In Stock
6.000Expected 10/16/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 100 kHz to 1 MHz 95 % 600 mV to 57 V 20 A - 40 C + 125 C SMD/SMT VQFN-20 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5-60V Wide-Inp Syn PWM Buck Controller A 595-TPS40170RGYT
Datasheet
1.664In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 100 kHz to 1 MHz 95 % 600 mV to 57 V 20 A - 40 C + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5-60V Wide-Inp Syn PWM Buck Controller A 595-TPS40170RGYR
Datasheet
2.641In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 100 kHz to 1 MHz 95 % 600 mV to 57 V 20 A - 40 C + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Low Pin Count Sync B uck DC/DC Cntrlr A A 595-TPS40190DRCT
Datasheet
11.158In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 300 kHz 85 % 600 mV to 12.75 V 20 A - 40 C + 85 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40193DRCT
Datasheet
948In Stock
MouseReel Available
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
Texas Instruments Switching Controllers 3.0-20V PMBus Sync B uck Controller A 59 A 595-TPS40400RHLT
Datasheet
1.681In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 200 kHz to 2 MHz 90 % 600 mV 20 A - 40 C + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64203DBVT
Datasheet
7.332In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 800 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 Current Mode
Datasheet
3.289In Stock
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 Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3800D
Datasheet
1.236In Stock
MouseReel Available
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 Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-2
Datasheet
1.377In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel