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
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
Microchip Technology Switching Controllers 38V DC-DC Buck Controller with HLL
Datasheet
6,966In Stock
Cut Tape
€1.26
€1.25
€1.24
€1.17
View
Reel
€1.08
MouseReel Available
Min.: 1
Mult.: 1
: 5,000
Buck 1 Output 200 kHz to 600 kHz 85 % 800 mV to 24 V 15 A - 40 C + 125 C SMD/SMT MLF-16 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
319In Stock
€1.38
€1.15
€1.04
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

Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
196In Stock
€3.10
€2.61
€2.37
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
€2.18
€1.82
€1.65
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
€2.39
€1.99
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 High Efficiency Synchronous Buck Controller
Datasheet
96In Stock
€3.98
€3.34
Min.: 1
Mult.: 1
Buck 5 Output 330 kHz 86 % 3.3 V 20 A - 40 C + 85 C SMD/SMT SOP-16 Tube
Texas Instruments Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3842AD8TR
Datasheet
2,710In Stock
Cut Tape
€0.843
€0.60
€0.541
€0.476
Reel
€0.393
View
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 Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT
Datasheet
2,251In Stock
Cut Tape
€3.74
€2.82
€2.59
€2.34
View
Reel
€2.01
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 VQFN-32 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd
Datasheet
2,626In Stock
Cut Tape
€3.35
€2.55
Reel
€2.55
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
2,517In Stock
Cut Tape
€4.41
€3.33
€3.05
€2.76
View
Reel
€2.43
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
Cut Tape
€2.11
€1.90
€1.89
€1.87
€1.81
Reel
€1.69
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 Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR
Datasheet
379In Stock
€4.65
€3.54
€3.06
€2.93
View
Min.: 1
Mult.: 1
Buck 1 Output 1 MHz 93 % 700 mV 20 A - 40 C + 85 C SMD/SMT HTSSOP-16 Tube
Texas Instruments Switching Controllers AC Low Iq dual Sync Buck Cntrlr
Datasheet
1,850In Stock
Cut Tape
€5.52
€4.23
€3.91
€3.56
View
Reel
€3.21
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 Low-Voltage Synchron ous Buck Controller
Datasheet
597In Stock
Cut Tape
€2.16
€1.61
€1.47
€1.32
Reel
€1.13
View
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
Texas Instruments Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D
Datasheet
1,918In Stock
Cut Tape
€1.30
€0.946
€0.858
€0.762
Reel
€0.626
View
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
891In Stock
€1.90
€1.41
€1.26
€1.13
View
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 Two-Phase Sync SD Sw itching Cntlr
Datasheet
364In Stock
€4.46
€3.40
€2.68
€2.55
View
Min.: 1
Mult.: 1
Buck 2 Output 300 kHz 98 % 1.3 V to 30 V 20 A - 40 C + 125 C SMD/SMT TSSOP-28 Tube
Texas Instruments Switching Controllers High-Performance Syn chronous Buck Contr A 926-LM21212MH-1/NOPB
Datasheet
986In Stock
Cut Tape
€2.22
€1.65
€1.51
€1.35
Reel
€1.18
View
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 Automotive 2.2-MHz l ow-IQ synchronous b
Datasheet
3,988In Stock
Cut Tape
€4.48
€3.41
€3.14
€2.85
View
Reel
€2.56
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
Cut Tape
€5.91
€4.55
€4.21
€4.19
Reel
€3.73
View
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
Texas Instruments Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVT
Datasheet
1,246In Stock
Cut Tape
€1.51
€1.11
€1.01
€0.894
Reel
€0.752
View
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
Buck 1 Output 450 kHz 100 % 1.2 V to 6.5 V 3 A - 40 C + 85 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
768In Stock
€12.87
€12.58
€12.55
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 / Maxim Integrated Switching Controllers Low-Cost, High-Frequency, Current-Mode P
Datasheet
2,480In Stock
Cut Tape
€4.22
€4.13
€4.11
€4.11
MouseReel Available
Min.: 1
Mult.: 1
Boost, Buck 1 Output 300 kHz 89 % 800 mV to 11.35 V 25 A - 40 C + 85 C SMD/SMT USOP-10 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers L IQ, 38V Sync Boost+Buck Cntr
Datasheet
475In Stock
€7.45
€7.28
€7.25
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 Low-Dropout, Wide-Input-Voltage, Step-Do
Datasheet
422In Stock
€12.73
€9.97
€9.28
€8.51
View
Min.: 1
Mult.: 1
Buck 1 Output 200 kHz to 1.4 MHz 99.5 % 600 mV to 28 V 20 A - 40 C + 85 C SMD/SMT TQFN-16 Tube