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 (SGD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Topology
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Duty Cycle - Max
Input Voltage
Output Voltage
Output Current
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Maximum Operating Temperature
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Analog Devices / Maxim Integrated Switching Controllers 500kHz Multi-Output, Low-Noise Power-Sup
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 60
Mult.: 60

Buck 2 Output 500 kHz 98 % 3.3 V, 5 V, 2.5 V to 5.5 V 5 A - 40 C + 85 C SMD/SMT TQFN-32 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, High-Frequency, Current-Mode P
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Boost, Buck 1 Output 1 MHz 89 % 800 mV to 4.73 V 4 A - 40 C + 85 C SMD/SMT USOP-10 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Current-Mode PWM Buck Controll
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 200
Mult.: 50

Boost, Buck 1 Output 360 kHz 93 % 800 mV to 4.95 V 25 A - 40 C + 85 C SMD/SMT USOP-10 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, Current-Mode PWM Buck Controll
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Boost, Buck 1 Output 360 kHz 93 % 800 mV to 4.95 V 25 A - 40 C + 85 C SMD/SMT USOP-10 Reel

Analog Devices / Maxim Integrated Switching Controllers 1.6V to 5.5V Input, 0.5 Accurate, Dual 180 Out-of-Phase Step-Down Controllers
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 2 Output 600 kHz 93 % 800 mV to 4.95 V 25 A - 40 C + 85 C SMD/SMT TQFN-28 Tube

Analog Devices / Maxim Integrated Switching Controllers 1.6V to 5.5V Input, 0.5 Accurate, Dual 180 Out-of-Phase Step-Down Controllers
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 2 Output 600 kHz 93 % 800 mV to 4.95 V - 40 C + 85 C SMD/SMT TQFN-28 Reel
Analog Devices / Maxim Integrated Switching Controllers Low-Cost, High-Frequency, Current-Mode P
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Boost, Buck 1 Output 300 kHz 89 % 400 mV to 4.73 V 3 A - 40 C + 85 C SMD/SMT USOP-10 Reel
Analog Devices / Maxim Integrated Switching Controllers 2.35V to 5.5V, 0.5 Accurate, 1MHz PWM S
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 1 Output 500 kHz, 1 MHz 92 % 800 mV to 4.95 V 20 A QSOP-20 Reel
Analog Devices / Maxim Integrated Switching Controllers 2.35V to 5.5V, 0.5 Accurate, 1MHz PWM S
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 1 Output 500 kHz, 1 MHz 92 % 1.5 V, 1.8 V, 2.5 V, 3.3 V, 800 mV to 4.95 V 20 A QSOP-20 Reel
Analog Devices / Maxim Integrated Switching Controllers Low-Cost Voltage-Mode PWM Step-Down Cont
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 1 Output 100 kHz 95 % 800 mV 2 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Cost Voltage-Mode PWM Step-Down Cont
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 1 Output 100 kHz 95 % 800 mV 2 A - 40 C + 85 C SMD/SMT SOIC-Narrow-8 Reel
Analog Devices / Maxim Integrated Switching Controllers Low-Cost Voltage-Mode PWM Step-Down Cont
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 1 Output 100 kHz 95 % 800 mV 2 A - 40 C + 85 C SMD/SMT UMAX-10 Reel

Analog Devices / Maxim Integrated Switching Controllers Quick-PWM Step-Down Controllers with Ind
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 1 Output 200 kHz to 600 kHz 100 % 700 mV to 5.5 V 4 A - 40 C + 85 C SMD/SMT TQFN-24 Tube
Analog Devices / Maxim Integrated Switching Controllers Automotive Low-Voltage 2-Channel Step-Do
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Buck 2 Output 2.2 MHz 99 % 500 mV to 1.27 V 12 A, 24 A - 40 C + 125 C SMD/SMT TQFN-32 AEC-Q100 Tube
Analog Devices / Maxim Integrated Switching Controllers 36V Dual HV controller with low 17uA Iq
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 2 Output 2.2 MHz 99 % 1 V to 5 V - 40 C + 125 C SMD/SMT TQFN-EP-28 AEC-Q100 Tube
Analog Devices / Maxim Integrated Switching Controllers Dual-Synchronous Buck Controllers for Po
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 2 Output 200 kHz to 1.4 MHz 95 % 800 mV to 3.6 V 30 A - 40 C + 85 C SMD/SMT QSOP-28 Tube

Analog Devices / Maxim Integrated Switching Controllers Integrated DDR Power-Supply Solution for
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 1 Output 600 kHz 100 % 700 mV to 5.5 V 1.5 A - 40 C + 85 C SMD/SMT TQFN-28 Tube

Analog Devices / Maxim Integrated Switching Controllers Integrated DDR Power-Supply Solutions fo
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Buck 1 Output 600 kHz 100 % 700 mV to 5.5 V 15 A - 40 C + 85 C SMD/SMT TQFN-28 Tube

Analog Devices / Maxim Integrated Switching Controllers High-Efficiency, 10A, PWM Internal-Switc
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 1 Output 250 kHz to 2.4 MHz 95 % 600 mV to 3.1 V 10 A - 40 C + 85 C SMD/SMT TQFN-32 Reel
Analog Devices / Maxim Integrated Switching Controllers Low-Dropout, Wide-Input-Voltage, Step-Do
Datasheet
Non-Stocked Lead-Time 14 Weeks
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-EP-20 Tube
Analog Devices / Maxim Integrated Switching Controllers Low-Dropout, Wide-Input-Voltage, Step-Do
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 1 Output 200 kHz to 1.4 MHz 99.5 % 600 mV to 28 V 20 A - 40 C + 85 C SMD/SMT QFN-EP-20 Reel
Analog Devices / Maxim Integrated Switching Controllers Low-Dropout, Wide-Input-Voltage, Step-Do
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

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 Reel
Richtek Switching Controllers Single-Phase Synchronous Buck PWM Controller
Datasheet
Non-Stocked
Min.: 1
Mult.: 1
: 2,500

Buck 2 Output 300 kHz 85 % 1.2 V to 12 V 1.2 A - 40 C + 85 C SMD/SMT SOP-8 Reel, Cut Tape
onsemi Switching Controllers INDUSTRIAL TEMPERATURE
Datasheet
Non-Stocked Lead-Time 24 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Buck 3 Output 300 kHz to 750 kHz 100 % 2.1 V 130 uA - 40 C + 100 C SMD/SMT QFN-52 Reel
Torex Semiconductor Switching Controllers 16V Input Step-Down DCDC Controller
Datasheet
Non-Stocked
Min.: 3,000
Mult.: 3,000
: 3,000

Buck 1 Output 500 kHz 100 % Adjustable 3 A - 40 C + 85 C SMD/SMT USP-6C Reel