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.

Learn More

Results: 773
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (CLP) 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
Analog Devices Switching Controllers 150V L IQ, Sync Buck DC/DC Cntr
Datasheet
1.256In 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
Analog Devices Switching Controllers 150V L IQ, Sync Buck DC/DC Cntr
Datasheet
1.041In 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 QFN-24 Tube
Analog Devices Switching Controllers L IQ, 60V Sync Boost+Buck Cntr
Datasheet
136In Stock
Min.: 1
Mult.: 1

Boost, Buck 2 Output 850 kHz 100 % 800 mV to 60 V 20 A - 40 C + 125 C SMD/SMT QFN-32 Tube

Texas Instruments Switching Controllers Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MHENOPB
Datasheet
2.317In Stock
MouseReel Available
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 High Perf Sync Buck Controller A 595-LM2 A 595-LM27403SQE/NOPB
Datasheet
1.948In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Buck 1 Output 1.05 MHz 93 % 600 mV to 19 V 30 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers High Perf Sync Buck Cntlr A 595-LM27403S A 595-LM27403SQ/NOPB
Datasheet
3.304In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1.05 MHz 93 % 600 mV to 19 V 25 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Low Iq Wide Input R ange Synchronous Buc A 595-LM5141RGET
Datasheet
1.205In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

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 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 75-V sync hronous buck DC/DC
Datasheet
986In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 100 kHz to 1 MHz 99 % 800 mV to 60 V 30 A - 40 C + 150 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 75V Synchronous Buck Controller With Wid A 595-LM5145RGYR
Datasheet
2.802In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 100 kHz to 1 MHz 99 % 800 mV to 60 V 30 A - 40 C + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Multiphase bidirecti onal current contro A 595-LM5170QPHPRQ1
Datasheet
136In Stock
250Expected 9/7/2026
MouseReel Available
Min.: 1
Mult.: 1
: 250

Boost, Buck 2 Output 50 kHz to 500 kHz 100 % 100 mV to 100 V 50 A - 40 C + 150 C SMD/SMT HTQFP-48 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr A 5 A 595-TPS40200D
Datasheet
1.441In Stock
2.500Expected 12/28/2026
MouseReel Available
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 Inp Non-Synch B uck DC/DC Cntrlr A A 595-TPS40200DRBT
Datasheet
3.160In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 35 kHz to 500 kHz 95 % 700 mV to 46 V 3 A - 40 C + 85 C SMD/SMT SON-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Mil Enhanced Nonsync Vltg-Mode Cntrlr
Datasheet
Product Comments
2.069In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 35 kHz to 500 kHz 95 % 700 mV to 46 V 3 A - 55 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide-Inp-Rng Nonsync Vltg-Mode Cntrlr
Datasheet
2.051In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 35 kHz to 500 kHz 95 % 700 mV to 46 V 3 A - 40 C + 125 C SMD/SMT SOIC-8 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn ch Buck Cntrlr A 59 A 595-TPS40304DRCT
Datasheet
3.915In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

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 Fixed-Freq Notebook Sys Pwr Controller A A 595-TPS51220ARTVT
Datasheet
2.405In Stock
MouseReel Available
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 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Triple Sync Buck w/L DO Controller A 595 A 595-TPS5130PT
Datasheet
999In Stock
MouseReel Available
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 + 85 C SMD/SMT LQFP-48 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-V to 26-V 20-A s y nchronous D-CAP buc A 595-TPS53119RGTR
Datasheet
2.704In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 970 kHz 90 % 600 mV to 5.5 V 20 A - 20 C + 85 C SMD/SMT VQFN-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers High Speed PWM Contr oller A 595-UC2823A A 595-UC2823ADWTR
Datasheet
111In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A - 40 C + 85 C SMD/SMT SOIC-16 Tube
Texas Instruments Switching Controllers High Speed PWM Contr oller A 595-UC3823B A 595-UC3823BDWTR
Datasheet
105In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A 0 C + 70 C SMD/SMT SOIC-16 Tube
Texas Instruments Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3803D
Datasheet
1.234In 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 BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895DWTR
Datasheet
286In Stock
Min.: 1
Mult.: 1

Boost, Buck 4 Output 1 MHz 100 % 5 V 100 mA 0 C + 70 C SMD/SMT SOIC-20 Tube
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895DW
Datasheet
2.701In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

Boost, Buck 4 Output 1 MHz 100 % 5 V 100 mA 0 C + 70 C SMD/SMT SOIC-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift
Datasheet
387In 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
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895PW
Datasheet
1.130In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

Boost, Buck 4 Output 1 MHz 100 % 100 mA 0 C + 70 C SMD/SMT TSSOP-20 Reel, Cut Tape, MouseReel