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: 566
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 Automotive 30-V lo w -power current-mode
Datasheet
1,975In 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 75V Synchronous Buck Controller With Wid A 595-LM5145RGYT
Datasheet
6,144In 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 + 125 C SMD/SMT VQFN-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide In Non-Synch Bu ck DC/DC Cntrlr A 5 A 595-TPS40200HDR
Datasheet
382In Stock
525Expected 29/09/2026
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 6V to 42V Synchronou s Step-Down Control A 926-LM3150MHE/NOPB
Datasheet
7,413In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 1 MHz 96 % 600 mV 12 A - 40 C + 125 C SMD/SMT HTSSOP-14 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Automotive Grade 4.5 -75V Wide Vin Const A 926-LM5085QMYE/NOPB
Datasheet
9,762In 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 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 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 Freq Sync h Buck Cntrlr A 595 A 595-TPS40060PWP
Datasheet
1,409In 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
1,717In Stock
6,000Expected 31/12/2026
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
1,041In 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
2,604In 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
823In 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
7,212In Stock
6,000Expected 30/09/2026
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
3,082In 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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD8
Datasheet
3,927In Stock
MouseReel Available
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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40DGK
Datasheet
1,320In Stock
MouseReel Available
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 High Perf Sync Buck Cntrlr A 926-LM27402 A 926-LM27402MH/NOPB
Datasheet
2,189In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 200 kHz to 1.2 MHz 95 % 600 mV to 18.6 V 30 A - 40 C + 125 C SMD/SMT HTSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-V to 20-V voltage mode synchronous bu A 926-LM27402SQX/NOPB
Datasheet
989In Stock
1,000Expected 22/09/2026
MouseReel Available
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 High Efficiency High -Side N-Channel Con A 926-LM3477MMX/NOPB
Datasheet
1,138In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 500 kHz 93 % 1.265 V 6 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3489MMX/NOPB
Datasheet
3,947In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 1.4 MHz 100 % 1.239 V to 35 V 4 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 5.5-65V Wide Vin Cu rrent Mode Synchrono A 595-LM5117PMHE/NOPB
Datasheet
2,631In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

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 Current-mode flyback controller with sec
Datasheet
2,807In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,001
: 3,000

Buck 1 Output 65 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-mode flyback controller with sec
Datasheet
2,954In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1,001
: 3,000

Buck 1 Output 65 kHz 80 % 10 V to 26 V - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel