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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Output Voltage
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Texas Instruments Switching Controllers Wide Inp Non-Sync Bu ck DC/DC Cntrlr ALT ALT 595-TPS40200DR
Datasheet
Product Comments
2.752In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 35 kHz to 500 kHz 95 % 700 mV to 46 V 3 A - 40 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel

Torex Semiconductor Switching Controllers 16V Step-Down DCDC Controller
Datasheet
2.750In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 1 MHz 100 % 1.2 V 3 A - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel
onsemi Switching Controllers CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS
Datasheet
2.956In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 2.4 MHz 100 % 1.36 V - 40 C + 125 C SMD/SMT DFNW-10 Reel, Cut Tape, MouseReel
onsemi Switching Controllers INDUSTRIAL TEMP RANGE I
Datasheet
2.099In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 2 Output 300 kHz to 1.4 MHz 100 % 3.5 V 800 uA - 40 C + 100 C SMD/SMT QFN-52 Reel, Cut Tape, MouseReel

Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
216In 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
247In 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
Analog Devices Switching Controllers L IQ, 2x, 2-PhSync Buck Cntr
Datasheet
104In Stock
Min.: 1
Mult.: 1

Buck 2 Output 400 kHz 99 % 800 mV to 10 V 25 A - 40 C + 85 C SMD/SMT SSOP-28 Tube
Analog Devices Switching Controllers L IQ, 2.25MHz, 3x Out, Buck/Buck/Boost S
Datasheet
30In Stock
Min.: 1
Mult.: 1

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 Switching Controllers L IQ, 60V Sync Boost+Buck Cntr
Datasheet
70In Stock
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

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
Analog Devices Switching Controllers L IQ, 2x, 2-PhSync Buck Cntr
Datasheet
23In Stock
Min.: 1
Mult.: 1

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 Switching Controllers 2.35V to 5.5V, 0.5 Accurate, 1MHz PWM S
Datasheet
20In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz, 1 MHz 92 % 1.5 V, 1.8 V, 2.5 V, 3.3 V 20 A - 40 C + 85 C SMD/SMT QSOP-20 Tube
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
165In Stock
Min.: 1
Mult.: 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 Switching Controllers Monolithic SMPS Controller
Datasheet
69In Stock
Min.: 1
Mult.: 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 / Maxim Integrated Switching Controllers Dual Step-Down Controllers with Saturati
Datasheet
58In Stock
Min.: 1
Mult.: 1

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 Switching Controllers Interleaved High-Efficiency, Dual Power-
Datasheet
36In Stock
Min.: 1
Mult.: 1

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

Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
126In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 85 C SMD/SMT SOIC-14 Tube
Analog Devices Switching Controllers Hi Speed C Mode Pulse Width Mods
Datasheet
176In Stock
Min.: 1
Mult.: 1

Buck 1 Output 500 kHz 96 % 5 V 1 A - 40 C + 100 C SMD/SMT SOIC-8 Tube
Analog Devices Switching Controllers 1MHz Off-Line C Mode PWM & DC/DC Conv
Datasheet
226In Stock
Min.: 1
Mult.: 1

Buck 1 Output 1 MHz 100 % 5 V 1 A 0 C + 100 C SMD/SMT SOIC-8 Tube
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
68In Stock
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
Texas Instruments Switching Controllers Multiphase bidirecti onal current contro A 595-LM5170PHPR
Datasheet
245In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Boost, Buck 2 Output 50 kHz to 500 kHz 99 % 100 mV to 100 V 50 A - 40 C + 125 C SMD/SMT TQFP-48 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Mid Input Sync Buck w/Vltg Feed-Fwd
Datasheet
2.629In 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
2.613In 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
Texas Instruments Switching Controllers High Speed PWM Contr oller A 595-UC3823B A 595-UC3823BDWTR
Datasheet
56In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5.1 V 2 A 0 C + 70 C SMD/SMT SOIC-16 Tube

Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40DGK
Datasheet
1.820In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 18 V 1 A 0 C + 70 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel