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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Analog Devices / Maxim Integrated Omkopplingsstyrenheter Dual Step-Down Controllers with Saturati
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58På lager
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Buck 2 Output 170 kHz to 620 kHz 100 % 700 mV to 5.5 V 7 A - 40 C + 85 C SMD/SMT TQFN-40 Tube

Analog Devices / Maxim Integrated Omkopplingsstyrenheter Adjustable-Output, Switch-Mode Current S
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49På lager
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Buck 1 Output 500 kHz 100 % 2 V to 24 V 1 uA - 40 C + 85 C SMD/SMT QSOP-16 Tube

Analog Devices / Maxim Integrated Omkopplingsstyrenheter Interleaved High-Efficiency, Dual Power-
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36På lager
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Buck 2 Output 500 kHz 99 % 3.3 V, 5 V, 1 V to 5.5 V 5 A - 40 C + 85 C SMD/SMT TQFN-28 Tube
Richtek Omkopplingsstyrenheter 12V Green Voltage Mode High Efficiency Synchronous Buck PWM Controller
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1 497På lager
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: 1 500

Buck 2 Output 300 kHz 88 % 5 V to 12 V 4 mA - 40 C + 85 C SMD/SMT WDFN-10 Reel, Cut Tape

Microchip Technology Omkopplingsstyrenheter Monolithic SMPS Controller
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125På lager
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Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C SMD/SMT SOIC-14 Tube
Analog Devices Omkopplingsstyrenheter L IQ, 2x, 2-PhSync Buck Cntr
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104På lager
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Buck 2 Output 400 kHz 99 % 800 mV to 10 V 25 A - 40 C + 85 C SMD/SMT SSOP-28 Tube
Analog Devices Omkopplingsstyrenheter L IQ, 60V Sync Boost+Buck Cntr
Datablad
6På lager
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Boost, Buck 2 Output 850 kHz 100 % 800 mV to 60 V 20 A - 40 C + 150 C SMD/SMT QFN-32 Tube
Analog Devices Omkopplingsstyrenheter L IQ, 2.25MHz, 3x Out, Buck/Buck/Boost S
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30På lager
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Boost, Buck 3 Output 320 kHz to 2.25 MHz 100 % 800 mV to 60 V 25 A - 40 C + 150 C SMD/SMT QFN-38 Tube
Analog Devices Omkopplingsstyrenheter L IQ, 2x, 2-PhSync Buck Cntr
Datablad
23På lager
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Buck 2 Output 400 kHz 99 % 800 mV to 10 V 25 A - 40 C + 85 C SMD/SMT SSOP-28 Tube

Analog Devices / Maxim Integrated Omkopplingsstyrenheter Small, Dual, High-Efficiency Buck Contro
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51På lager
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Buck 2 Output 350 kHz 100 % 1.8 V, 2.5 V, 1 V to 5.5 V 600 mA - 40 C + 85 C SMD/SMT QSOP-16 Tube
Richtek Omkopplingsstyrenheter Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs
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717På lager
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: 1 500

Buck 4 Output 300 kHz, 355 kHz 98 % Adjustable 100 mA - 40 C + 85 C SMD/SMT WQFN-20 Reel, Cut Tape
Microchip Technology Omkopplingsstyrenheter Monolithic SMPS Controller
Datablad
165På lager
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Multipla: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT MSOP-8 Tube
Microchip Technology Omkopplingsstyrenheter Monolithic SMPS Controller
Datablad
69På lager
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Multipla: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C Through Hole DIP-8 Tube
Analog Devices Omkopplingsstyrenheter L IQ, 60V Sync Boost+Buck Cntr
Datablad
70På lager
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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 Omkopplingsstyrenheter Multi-Output, Low-Noise Power-Supply Con
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25På lager
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Buck 2 Output 300 kHz 99 % 3.3 V, 5 V, 2.5 V to 5.5 V 1 A - 40 C + 85 C SMD/SMT SSOP-28 Tube
Richtek Omkopplingsstyrenheter Single Phase PWM Controller with Light Load Efficiency Optimization
Datablad
1 498På lager
Min.: 1
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: 1 500

Buck 2 Output 200 kHz 95 % 800 mV to 3.3 V 150 mA - 40 C + 85 C SMD/SMT WQFN-16 Reel, Cut Tape
Microchip Technology Omkopplingsstyrenheter Sync Buck, PWM Ctrl 300Khz, 8ns
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60På lager
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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 Omkopplingsstyrenheter High-Speed Step-Down Controller for Note
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97På lager
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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 Omkopplingsstyrenheter 1MHz Off-Line C Mode PWM & DC/DC Conv
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150På lager
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Buck 1 Output 1 MHz 100 % 5 V 1 A 0 C + 100 C Through Hole PDIP-8 Tube

Texas Instruments Omkopplingsstyrenheter Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MHENOPB
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218På lager
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Boost, Buck 1 Output 500 kHz 80 % 1.23 V to 38 V 4 A - 40 C + 125 C SMD/SMT HTSSOP-20 AEC-Q100 Tube
Texas Instruments Omkopplingsstyrenheter CVCC Flyback Cntlr w / Primary-Side Reg A 595-UCC28722DBVT
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4 421På lager
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: 3 000

Buck, Flyback 1 Output 650 Hz to 80 kHz 99 % 21 V 37 mA - 40 C + 125 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel

Torex Semiconductor Omkopplingsstyrenheter 2ch.Step-Down DC/DC Controller Ics
Datablad
819På lager
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 1 000

Buck 2 Output 300 kHz 100 % 900 mV to 10 V 1 A - 40 C + 85 C SMD/SMT MSOP-10 Reel, Cut Tape, MouseReel
Texas Instruments Omkopplingsstyrenheter 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085SD/NOPB
Datablad
599På lager
MouseReel tillgängligt
Min.: 1
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: 250

Buck 1 Output 1 MHz 100 % 1.25 V to 75 V 1.75 A - 40 C + 125 C SMD/SMT LLP-8 Reel, Cut Tape, MouseReel
Analog Devices Omkopplingsstyrenheter Synch, StepDown DC/DC Cntr w/Volt trking
Datablad
345På lager
MouseReel tillgängligt
Min.: 1
Multipla: 1
: 1 500

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 Omkopplingsstyrenheter 1MHz Off-Line C Mode PWM & DC/DC Conv
Datablad
126På lager
Min.: 1
Multipla: 1

Buck 1 Output 1 MHz 100 % 5 V 1 A 0 C + 100 C SMD/SMT SOIC-8 Tube