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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Analog Devices Switching Controllers Bidirectional Synchronous 100V Buck/Boost Controller with Reverse Supply, Reverse Current and Fault Protection
Datasheet
229In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 80 kHz to 600 kHz 95 % 100 V 40 A - 40 C + 150 C SMD/SMT TSSOP-38 Tube
Analog Devices Switching Controllers PP, Hi Eff, Sync Buck Sw Reg
Datasheet
768In 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 High Speed PWM Contr oller
Datasheet
70In Stock
Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward 2 Output 1 MHz 100 % 5.1 V 2 A - 40 C + 85 C Through Hole PDIP-16 Tube
Texas Instruments Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-3
Datasheet
1.983In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 4.1 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel

Analog Devices / Maxim Integrated Switching Controllers 40V, High-Performance, Synchronous Buck
Datasheet
2.475In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

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 Reel, Cut Tape, MouseReel
Analog Devices / Maxim Integrated Switching Controllers 5V/3.3V or Adjustable, 100 Duty Cycle,
Datasheet
2.197In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 300 kHz 100 % 1.3 V to 16 V 3 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Reel, Cut Tape, MouseReel
Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
2.182In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Boost, Buck, Flyback, Forward 1 Output 500 kHz 96 % 5 V 500 mA - 40 C + 85 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 20V 20A Buck Cntrl + Internal 5V LDO
Datasheet
993In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

Buck 2 Output 300 kHz to 600 kHz 93 % 5 V 20 A - 40 C + 85 C SMD/SMT LFCSP-32 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Multiphase bidirecti onal current contro A 595-LM5170PHPT
Datasheet
1.081In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

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 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40192DRCT
Datasheet
4.746In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 600 kHz 85 % 591 mV to 14.4 V 20 A - 40 C + 85 C SMD/SMT VSON-10 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Adv Voltage Mode
Datasheet
284In Stock
Min.: 1
Mult.: 1

Boost, Buck 1 Output 700 kHz 99 % 9.6 V 1 A 0 C + 70 C SMD/SMT SOIC-14 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Wide Input Range, Step-Down Co
Datasheet
1.352In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 300 kHz 95 % 800 mV to 23 V 15 A - 40 C + 85 C SMD/SMT UMAX-10 Reel, Cut Tape, MouseReel
onsemi Switching Controllers CONSTANT-CURRENT BUCK REGULATOR FOR DRIVING HIGH POWER LEDS
Datasheet
2.929In 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
Texas Instruments Switching Controllers Lo Vtg N-Ch MOSFET S ync Buck Reg Cntlr A 926-LM2743MTC/NOPB
Datasheet
2.365In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 50 kHz to 1 MHz 80 % Adjustable 4 A - 40 C + 125 C SMD/SMT TSSOP-14 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers 60V Low IQ Buck Ctlr
Datasheet
639In Stock
Min.: 1
Mult.: 1

Buck 5 Output 1 MHz to 3 MHz 100 % 3.3 V, 5 V 8 A - 40 C + 125 C SMD/SMT QFN-48 Tube
Analog Devices Switching Controllers L IQ, 38V Sync Boost+Buck Cntr
Datasheet
479In 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
Texas Instruments Switching Controllers 3-V to 36-V 4-A lo w -noise synchronous
Datasheet
4.652In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Buck 1 Output 200 kHz to 2.2 MHz 98 % 1 V to 34 V 4 A - 40 C + 150 C SMD/SMT Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers L IQ , 60V, Hi Freq Sync Buck Cntr
Datasheet
2.064In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

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 Reel, Cut Tape, MouseReel
Analog Devices Switching Controllers GSM Power Management System
Datasheet
999In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

Boost, Buck 1 Output 300 kHz 98 % 5 mA - 40 C + 125 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4 Ch Multiphase Buck DC/DC Controller A A 595-TPS40090PW
Datasheet
985In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

Buck 1 Output 100 kHz to 1 MHz 87.5 % 700 mV to 3.3 V 120 A - 40 C + 85 C SMD/SMT TSSOP-24 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 3-20V Wide Input Syn c Buck Controller A A 595-TPS40305DRCT
Datasheet
2.750In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C42DGKR
Datasheet
955In Stock
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
Texas Instruments Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2727MTC/NOPB
Datasheet
2.564In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Buck 1 Output 2 MHz 90 % 600 mV to 5 V 20 A 0 C + 125 C SMD/SMT TSSOP-14 Reel, Cut Tape, MouseReel

Microchip Technology Switching Controllers Monolithic SMPS Controller
Datasheet
196In 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
87In 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