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 (DKK) 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 L IQ, 60V Sync Boost+Buck Cntr
Datasheet
70In Stock
62,29 kr.
60,95 kr.
60,72 kr.
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

Analog Devices / Maxim Integrated Switching Controllers High-Speed Step-Down Controller for Note
Datasheet
97In Stock
45,43 kr.
44,46 kr.
44,31 kr.
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
Analog Devices / Maxim Integrated Switching Controllers Versatile Automotive 36V 2.2MHz Buck Controller with 3.5 A IQ
Datasheet
489In Stock
28,72 kr.
21,63 kr.
19,92 kr.
17,98 kr.
View
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
Analog Devices Switching Controllers Synch, StepDown DC/DC Cntr w/Volt trking
Datasheet
345In Stock
Cut Tape
32,53 kr.
24,54 kr.
22,53 kr.
20,37 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
Buck 1 Output 1.5 MHz 90 % 600 mV to 18 V 25 A - 40 C + 125 C SMD/SMT LFCSP-20 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
66In Stock
150,62 kr.
120,63 kr.
111,08 kr.
103,02 kr.
View
Min.: 1
Mult.: 1
Buck 2 Output 300 kHz 99 % 1.26 V to 2.5 V 240 A 0 C + 70 C SMD/SMT SSOP-28 Tube
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr
Datasheet
149In Stock
77,43 kr.
60,72 kr.
56,70 kr.
50,43 kr.
View
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
Texas Instruments Switching Controllers Fixed-Freq Notebook Sys Pwr Controller D DISC-RESTRICTED-PART
Datasheet
430In Stock
Cut Tape
24,77 kr.
21,04 kr.
19,32 kr.
17,46 kr.
View
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
Analog Devices / Maxim Integrated Switching Controllers Dual-Synchronous Buck Controllers for Po
Datasheet
142In Stock
41,48 kr.
40,58 kr.
40,36 kr.
Min.: 1
Mult.: 1
Buck 2 Output 200 kHz to 1.4 MHz 95 % 800 mV to 3.6 V 30 A - 40 C + 85 C SMD/SMT QSOP-28 Tube

Analog Devices / Maxim Integrated Switching Controllers High-Efficiency, 10A, PWM Internal-Switc
Datasheet
57In Stock
151,96 kr.
121,90 kr.
108,77 kr.
105,19 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 250 kHz to 2.4 MHz 95 % 600 mV to 3.1 V 10 A - 40 C + 85 C SMD/SMT TQFN-32 Tube
Analog Devices / Maxim Integrated Switching Controllers Ultra-High-Efficiency, Dual Step-Down Co
Datasheet
113In Stock
85,94 kr.
67,66 kr.
60,28 kr.
58,11 kr.
View
Min.: 1
Mult.: 1
Buck 2 Output 200 kHz to 540 kHz 100 % 1 V to 5.5 V 8 A - 40 C + 85 C SMD/SMT QSOP-28 Tube
Analog Devices Switching Controllers 1MHz Off-Line C Mode PWM & DC/DC Conv
Datasheet
150In Stock
60,80 kr.
47,30 kr.
43,86 kr.
40,13 kr.
View
Min.: 1
Mult.: 1
Buck 1 Output 1 MHz 100 % 5 V 1 A 0 C + 100 C Through Hole PDIP-8 Tube
onsemi NCP81172MNTXG
onsemi Switching Controllers 2/1-PHASE SYNC BUCK
Datasheet
2.076In Stock
Cut Tape
8,36 kr.
6,01 kr.
5,44 kr.
4,80 kr.
View
Reel
3,92 kr.
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
Cut Tape
38,72 kr.
29,69 kr.
27,45 kr.
24,99 kr.
Reel
24,39 kr.
View
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
Texas Instruments Switching Controllers High Speed Vltg Mode A 595-UCC35705DTR A A 595-UCC35705DTR
Datasheet
598In Stock
25,81 kr.
19,25 kr.
17,61 kr.
15,67 kr.
View
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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40DGKR
Datasheet
371In Stock
25,74 kr.
19,17 kr.
17,53 kr.
15,59 kr.
View
Min.: 1
Mult.: 1
Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 18 V 1 A 0 C + 70 C SMD/SMT VSSOP-8 Tube
Richtek Switching Controllers 5V High Efficiency Synchronous Buck PWM Controller
Datasheet
1.499In Stock
Cut Tape
7,53 kr.
5,44 kr.
4,89 kr.
4,30 kr.
Reel
3,64 kr.
View
Min.: 1
Mult.: 1
: 1.500
Buck 2 Output 300 kHz 88 % 5 V 1.5 A - 40 C + 85 C SMD/SMT WDFN-10 Reel, Cut Tape
Richtek Switching Controllers Dual-Phase Synchronous Buck PWM Controller
Datasheet
1.466In Stock
Cut Tape
7,68 kr.
5,57 kr.
5,05 kr.
4,46 kr.
Reel
3,72 kr.
View
Min.: 1
Mult.: 1
: 1.500
Buck 4 Output 100 kHz to 1 MHz 80 % 400 mV to 2.5 V 1.5 A - 40 C + 85 C SMD/SMT WQFN-24 Reel, Cut Tape
RECOM Power Switching Controllers Vin Vout mA Flyback MSOP-10
Datasheet
90In Stock
49,39 kr.
47,52 kr.
45,13 kr.
44,31 kr.
View
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 42V 100% duty-cycle capable dual-channe
Datasheet
288In Stock
2.500Expected 11/03/2027
Cut Tape
26,63 kr.
20,07 kr.
18,43 kr.
16,64 kr.
View
Reel
14,40 kr.
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 80V 100 % duty-cycle capable
Datasheet
9.161In Stock
Cut Tape
38,49 kr.
29,32 kr.
27,08 kr.
24,54 kr.
24,10 kr.
Reel
20,44 kr.
MouseReel Available
Min.: 1
Mult.: 1
: 2.500
Buck 2 Output 2.42 MHz 100 % 4 V to 80 V 800 mV to 60 V - 40 C + 150 C SMD/SMT VQFN-36 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Automotive 80V sync hronous buck DC/DC c
Datasheet
2.279In Stock
Cut Tape
32,67 kr.
24,92 kr.
22,98 kr.
20,81 kr.
View
Reel
18,28 kr.
MouseReel Available
Min.: 1
Mult.: 1
: 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
2.300In Stock
Cut Tape
9,70 kr.
7,12 kr.
6,42 kr.
5,70 kr.
Reel
4,76 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback 1 Output 500 kHz 100 % 30 V 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 150V L IQ, Sync Buck DC/DC Cntr
Datasheet
1.809In Stock
Cut Tape
97,28 kr.
76,47 kr.
71,24 kr.
65,65 kr.
View
MouseReel Available
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 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 36V 1A 500KHz curr e nt mode PWM control
Datasheet
2.462In Stock
Cut Tape
4,17 kr.
2,96 kr.
2,66 kr.
2,32 kr.
Reel
1,89 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback 2 Output 500 kHz 100 % 36 V 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
2.081In Stock
Cut Tape
4,24 kr.
3,03 kr.
2,72 kr.
2,37 kr.
Reel
1,89 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
: 2.500
Boost, Buck, Flyback 2 Output 500 kHz 100 % 36 V 4.95 V to 5.05 V 1 A - 40 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel