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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Input Voltage
Output Voltage
Output Current
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Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
196In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT SOIC-14 Tube
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
87In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT SOIC-8 Tube

Microchip Technology Switching Controllers 500KHz Synchronous Buck Controller
Datasheet
89In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz 92 % 800 mV - 40 C + 125 C SMD/SMT MSOP-10 Tube
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
323In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C Through Hole DIP-8 Tube
Texas Instruments Switching Controllers 4.5V-20V Buck Cntrlr A 595-TPS40195RGYT A 595-TPS40195RGYT
Datasheet
4,572In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 600 kHz 85 % 591 mV to 17 V 20 A - 40 C + 85 C SMD/SMT VQFN-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64203DBVR
Datasheet
817In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

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 PWM Con troller A 595-UC384 A 595-UC3842D
Datasheet
1,919In 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-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842N
Datasheet
Product Comments
904In 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 High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB
Datasheet
986In Stock
MouseReel Available
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 Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR
Datasheet
Product Comments
2,932In 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 Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD
Datasheet
1,971In 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-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTC/NOPB
Datasheet
834In Stock
MouseReel Available
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
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 High Speed PWM Contr oller A 595-UC2823D A 595-UC2823DWTR
Datasheet
239In Stock
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 Mid Input Sync Buck w/Vltg Feed-Fwd
Datasheet
2,626In Stock
MouseReel Available
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 Current-Mode NB Sys Pwr Controller
Datasheet
2,519In 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 AEC-Q100 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers 75V, Dual Phase Advanced COT PWM Controller
Datasheet
3,571In Stock
Min.: 1
Mult.: 1
: 3,300

Buck 1 Output 100 kHz to 1 MHz 85 % 600 mV to 28 V 100 mA - 40 C + 125 C SMD/SMT VQFN-32 Reel, Cut Tape
Texas Instruments Switching Controllers AC Low Iq dual Sync Buck Cntrlr
Datasheet
1,850In Stock
MouseReel Available
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
Datasheet
993In 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 + 125 C SMD/SMT LQFP-48 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Sgl Sync SD Cntrlr A 595-TPS53014DGS A 5 A 595-TPS53014DGS
Datasheet
2,448In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 500 kHz 83 % 760 mV to 7 V 25 A - 40 C + 85 C SMD/SMT MSOP-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Low-Voltage Synchron ous Buck Controller
Datasheet
597In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Buck 1 Output 100 kHz to 1 MHz 95 % 800 mV to 4.5 V 6 A - 40 C + 125 C SMD/SMT WSON-6 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Sync Buck, PWM Ctrl 300Khz, 8ns
Datasheet
60In Stock
Min.: 1
Mult.: 1

Buck 1 Output 300 kHz 85 % 5 V 50 mA - 40 C + 125 C SMD/SMT DFN-10 AEC-Q100 Tube

Analog Devices / Maxim Integrated Switching Controllers High-Speed Step-Down Controller for Note
Datasheet
97In Stock
Min.: 1
Mult.: 1

Buck 1 Output 600 kHz 100 % 1 V to 5.5 V 3 A - 40 C + 85 C SMD/SMT QSOP-16 Tube
Texas Instruments Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b
Datasheet
3,988In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 440 kHz, 4.4 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 30 A - 40 C + 150 C SMD/SMT VQFN-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn Buck Controller A 5 A 595-LM5141RGER
Datasheet
200In 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 AEC-Q100 Reel, Cut Tape, MouseReel