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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Topology
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Duty Cycle - Max
Input Voltage
Output Voltage
Output Current
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Maximum Operating Temperature
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Analog Devices Switching Controllers 40V Low IQ Dual Buck CTL w/ 3.3VOUT1
Datasheet
199In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz to 3 MHz 99 % 800 mV to 40 V 5 A - 40 C + 125 C SMD/SMT Tube
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr
Datasheet
159In 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

Microchip Technology Switching Controllers 76V Synchronous Buck Controller
Datasheet
397In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz 96 % Adjustable 15 A - 40 C + 125 C SMD/SMT MSOP-10 Tube
Texas Instruments Switching Controllers High Speed PWM Contr oller
Datasheet
214In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A - 25 C + 85 C Through Hole PDIP-16 Tube
Analog Devices / Maxim Integrated Switching Controllers Versatile Automotive 36V 2.2MHz Buck Controller with 3.5 A IQ
Datasheet
489In Stock
Min.: 1
Mult.: 1

Buck 1 Output 220 kHz to 2.2 MHz 99 % 5 V, 1 V to 10 V 15 A - 40 C + 125 C SMD/SMT SWTQFN-EP-16 AEC-Q100 Tray
Texas Instruments Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AD8TR
Datasheet
Product Comments
2 112In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 500 kHz 100 % 200 mA 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Emulated Peak Crnt M ode Buck Cntlr A 92 A 926-LM3495MTCX/NOPB
Datasheet
340In Stock
Min.: 1
Mult.: 1

Buck 1 Output 200 kHz to 1.5 MHz 80 % 600 mV to 5.5 V 10 A - 40 C + 125 C SMD/SMT TSSOP-16 Tube
Texas Instruments Switching Controllers Automotive 80V 100 % duty cycle dual-c
Datasheet
1 872In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1 001
: 2 500

Buck 2 Output 100 kHz to 2.5 MHz 100 % 4 V to 80 V 800 mV to 60 V - 40 C + 125 C SMD/SMT VQFN-36 Reel, Cut Tape, MouseReel
Diodes Incorporated Switching Controllers USB Std Power Range W-QFN4040-24/SWP(Type A1-B) T&R 3K
Datasheet
2 093In Stock
Min.: 1
Mult.: 1
Max.: 300
: 3 000

Buck 1 Output 440 kHz 95 % 4 V to 36 V 5 V to 28 V 3 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape
Texas Instruments Switching Controllers Fixed-Freq Notebook Sys Pwr Controller D DISC-RESTRICTED-PART
Datasheet
440In Stock
MouseReel Available
Min.: 1
Mult.: 1

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
onsemi NCP81172MNTXG
onsemi Switching Controllers 2/1-PHASE SYNC BUCK
Datasheet
2 076In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

Buck 2 Output 200 kHz to 800 kHz 100 % 2 V 2 mA - 40 C + 125 C SMD/SMT Reel, Cut Tape, MouseReel

Renesas / Intersil Switching Controllers ISL78264ARZ AUTOMOTIVE GRADE - Dual Sync Buck controller 5x
Datasheet
220In Stock
Min.: 1
Mult.: 1
: 250

Buck 2 Output 200 kHz to 2.2 MHz 98.75 % 3.25 V to 5 V - 40 C + 125 C SMD/SMT WFQFN-32 AEC-Q100 Reel, Cut Tape
RECOM Power Switching Controllers Vin Vout mA Flyback MSOP-10
Datasheet
30In Stock
70Expected 8/17/2026
Min.: 1
Mult.: 1

Buck, Boost, Flyback 1 Output 500 kHz 85 % 4 V to 100 V - 40 C + 125 C SMD/SMT MSOP-10
Texas Instruments Switching Controllers High Speed Vltg Mode A 595-UCC35705DTR A A 595-UCC35705DTR
Datasheet
598In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 4 MHz 93 % 8.8 V 20 mA 0 C + 70 C SMD/SMT SOIC-8 Tube
Texas Instruments Switching Controllers 42V 100% duty-cycle capable dual-channe
Datasheet
456In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 2 Output 100 kHz to 2.2 MHz 100 % 4 V to 42 V 800 mV to 36 V - 40 C + 150 C SMD/SMT VQFN-36 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 42-V sync hronous buck DC/DC
Datasheet
5 959In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1 001
: 3 000

Buck 1 Output 2.2 MHz 100 % 3.5 V to 42 V 800 mV to 36 V - 40 C + 150 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 80V sync hronous buck DC/DC c
Datasheet
2 312In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1 001
: 3 000

Buck 1 Output 2.2 MHz 99 % 3.5 V to 80 V 800 mV to 55 V 20 A - 40 C + 125 C SMD/SMT VQFN-19 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 36V 1A 50 0KHz current mode
Datasheet
2 340In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1 001
: 2 500

Boost, Buck, Flyback 1 Output 500 kHz 100 % 10 V 4.95 V to 5.05 V 1 A - 40 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Diodes Incorporated Switching Controllers USB Std Power Range W-QFN4040-24(Type A1) T&R 3K
Datasheet
2 385In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 110
: 3 000

Buck 1 Output 440 kHz 95 % 4 V to 36 V 1 V to 28 V 3 A - 40 C + 150 C SMD/SMT W-QFN4040-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 80-V syn chronous buck DC/DC
Datasheet
7 945In 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 + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Inp Non-Sync Buck DC/DC Cntrlr
Datasheet
219In Stock
Min.: 1
Mult.: 1
Max.: 5

Buck 1 Output 35 kHz to 500 kHz 100 % 700 mV to 46 V 3 A - 55 C + 210 C SMD/SMT CFP-8 Tube
Texas Instruments Switching Controllers 36V 1A 500KHz curr e nt mode PWM control
Datasheet
2 471In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1 001
: 2 500

Boost, Buck, Flyback 2 Output 500 kHz 100 % 4.95 V to 5.05 V 1 A - 40 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 36V 1A 500KHz curr e nt mode PWM control
Datasheet
2 263In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 1 001
: 2 500

Boost, Buck, Flyback 2 Output 500 kHz 100 % 4.95 V to 5.05 V 1 A - 40 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 2-Phase Sync Boost CTL, 40V, 3MHz
Datasheet
530In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 3 MHz 100 % 40 V - 40 C + 150 C SMD/SMT QFN-28 Tube
Texas Instruments Switching Controllers 3.5-V to 80-V curre nt mode synchronous
Datasheet
9 197In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 2.2 MHz 100 % 800 mV to 55 V - 40 C + 125 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel