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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Qty. RoHS ECAD Model Topology
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Input Voltage
Output Voltage
Output Current
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Texas Instruments Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1
Datasheet
3,036In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 2.2 MHz 99 % 1.5 V to 15 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 AEC-Q100 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7 A IQ and Optional Bypass Mode
Datasheet
5,844In Stock
Min.: 1
Mult.: 1

Buck 1 Output 220 kHz to 2.2 MHz 99 % 5 V - 40 C + 125 C SMD/SMT TQFN-EP-20 Tray
Analog Devices Switching Controllers 150V L IQ, 2x, 2-PhSync Buck DC/DC Cntr
Datasheet
2,204In Stock
Min.: 1
Mult.: 1

Buck 2 Output 50 kHz to 750 kHz 100 % 1 V to 60 V 105 uA - 40 C + 150 C SMD/SMT LQFP-48 Tray
Texas Instruments Switching Controllers Automotive 2.2-MHz l ow-IQ synchronous b A 595-LM25141QRGETQ1
Datasheet
5,748In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 440 kHz, 2.2 MHz 99 % 3.3 V, 5 V, 1.5 V to 15 V 20 A - 40 C + 150 C SMD/SMT VQFN-24 AEC-Q100 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers AUTO CAT WIDE-INPUT SYNCH BUCK
Datasheet
5,517In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 100 kHz to 1 MHz 85 % 700 mV to 35 V 20 A - 40 C + 125 C SMD/SMT HTSSOP-16 AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide In Non-Sync Buc k DC/DC Cntrlr
Datasheet
29,702In 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
Infineon Technologies Switching Controllers COOLSET
Datasheet
1,930In Stock
Min.: 1
Mult.: 1
Buck, Flyback 1 Output 65 kHz 80 % 15 V - 40 C + 150 C Through Hole DIP-7 Tube
Analog Devices Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL
Datasheet
1,464In Stock
Min.: 1
Mult.: 1

Boost, Buck 2 Output 3 MHz 100 % 800 mV to 40 V 180 uA - 40 C + 150 C SMD/SMT QFN-28 Tube
Analog Devices Switching Controllers 40V Dual Low IQ, 100 DC Sync Buck CTL
Datasheet
8,972In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Boost, Buck 2 Output 3 MHz 100 % 800 mV to 40 V 180 uA - 40 C + 150 C SMD/SMT QFN-28 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQ/NOPB
Datasheet
341In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 50 kHz to 750 kHz 98 % 800 mV to 62 V 20 A - 40 C + 125 C SMD/SMT WQFN-24 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP
Datasheet
2,495In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 1 MHz 93 % 700 mV 20 A - 40 C + 85 C SMD/SMT HTSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3V-20V Wide Inp Sync Buck Controller A 5 A 595-TPS40304ADRCT
Datasheet
2,963In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 600 kHz 90 % 600 mV to 18 V 25 A - 40 C + 145 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCR
Datasheet
1,983In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1.2 MHz 85 % 600 mV to 17 V 25 A - 40 C + 125 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Triple Sync Buck w/L DO Controller A 595 A 595-TPS5130PT
Datasheet
873In 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 + 85 C SMD/SMT LQFP-48 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK
Datasheet
4,027In 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

Analog Devices / Maxim Integrated Switching Controllers 40V, High-Performance, Synchronous Buck
Datasheet
959In Stock
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz to 1 MHz 87.5 % 600 mV to 36 V 25 A - 40 C + 125 C SMD/SMT QSOP-16 Tube
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
2,654In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 300 kHz 100 % 3.3 V, 5 V 3 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
713In Stock
Min.: 1
Mult.: 1

Buck 1 Output 300 kHz 100 % 3.3 V to 5 V 3 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Tube

Analog Devices / Maxim Integrated Switching Controllers Dual-Output Step-Down DC-DC Converter fo
Datasheet
539In Stock
Min.: 1
Mult.: 1

Buck 2 Output 1.25 MHz 100 % 500 mV to 5.5 V 2 A - 40 C + 85 C SMD/SMT QSOP-16 Tube
Microchip Technology Switching Controllers 75V DC-DC Buck Controller with HLL
Datasheet
1,616In Stock
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
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Small, 4.5V to 28V Wide Operat
Datasheet
1,000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Buck 1 Output 200 kHz to 2 MHz 88 % 600 mV to 28 V 15 A - 40 C + 125 C SMD/SMT TDFN-EP-14 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MH/NOPB
Datasheet
394In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

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 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers Wide Vtg Range Buck- Boost Cntlr A 595-L A 595-LM25118Q1MHENOPB
Datasheet
2,876In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

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 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Low Pin Count Sync B uck DC/DC Cntrlr A A 595-TPS40190DRCT
Datasheet
11,173In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Buck 1 Output 300 kHz 85 % 600 mV to 12.75 V 20 A - 40 C + 85 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PW A 595 A 595-TPS40195PW
Datasheet
2,344In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

Buck 1 Output 600 kHz 85 % 591 mV 20 A - 40 C + 85 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel