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.

Learn More

Results: 566
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (PLN) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Topology
Number of Outputs
Switching Frequency
Duty Cycle - Max
Input Voltage
Output Voltage
Output Current
Minimum Operating Temperature
Maximum Operating Temperature
Mounting Style
Package/Case
Qualification
Packaging
Texas Instruments Switching Controllers High Speed PWM Contr oller A 595-UC3823B A 595-UC3823BDWTR
Datasheet
105In 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 Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3803D
Datasheet
1 056In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Boost, Buck, Flyback, Forward 1 Output 1 MHz 100 % 5 V 1 A 0 C + 70 C SMD/SMT SOIC-8 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895DWTR
Datasheet
286In Stock
Min.: 1
Mult.: 1

Boost, Buck 4 Output 1 MHz 100 % 5 V 100 mA 0 C + 70 C SMD/SMT SOIC-20 Tube
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895DW
Datasheet
2 298In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

Boost, Buck 4 Output 1 MHz 100 % 5 V 100 mA 0 C + 70 C SMD/SMT SOIC-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers BiCMOS Advanced Phas e Shift A 595-UCC38 A 595-UCC3895PW
Datasheet
1 130In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

Boost, Buck 4 Output 1 MHz 100 % 100 mA 0 C + 70 C SMD/SMT TSSOP-20 Reel, Cut Tape, MouseReel
Infineon Technologies Switching Controllers 10A DC/DC Step Down Synch Controller
Datasheet
2 148In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 100 kHz to 700 kHz 99 % Adjustable 10 A - 40 C + 150 C SMD/SMT SSOP-14 AEC-Q100 Reel, Cut Tape, MouseReel
Infineon Technologies Switching Controllers 10A DC/DC Step Down Synch Controller
Datasheet
1 047In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 100 kHz to 700 kHz 99 % Adjustable 10 A - 40 C + 150 C SMD/SMT SSOP-14 AEC-Q100 Reel, Cut Tape, MouseReel
Richtek Switching Controllers Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs
Datasheet
2 907In Stock
Min.: 1
Mult.: 1
: 1 500

Buck 4 Output 300 kHz, 355 kHz 98 % Adjustable 100 mA - 40 C + 85 C SMD/SMT WQFN-20 Reel, Cut Tape
Richtek Switching Controllers Dual-Channel Synchronous DC-DC Step-Down Controller with 5V/3.3V LDOs
Datasheet
2 284In Stock
Min.: 1
Mult.: 1
: 3 000

Buck 4 Output 500 kHz, 600 kHz 98 % Adjustable 100 mA - 40 C + 125 C SMD/SMT WQFN-20 Reel, Cut Tape
onsemi Switching Controllers HV PWM BUCK CONTROLR
Datasheet
4 274In Stock
15 000On Order
MouseReel Available
Min.: 1
Mult.: 1
Max.: 290
: 2 500

Buck 1 Output 550 kHz 80 % 1.25 V 1 A - 40 C + 125 C SMD/SMT SOIC-16 Reel, Cut Tape, MouseReel
onsemi Switching Controllers MULTI-PHASE CONTROLLER WITH I2C INTERFACE FOR DRMOS
Datasheet
1 419In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 200 kHz to 1.2 MHz 100 % 600 mV to 5.3 V 52.5 uA - 40 C + 100 C SMD/SMT QFN-52 Reel, Cut Tape, MouseReel
onsemi Switching Controllers IMVP8 3+2+1 SVID CONTRO
Datasheet
2 874In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 3 Output 300 kHz to 750 kHz 100 % 3.5 V 200 uA - 40 C + 100 C SMD/SMT QFN-52 Reel, Cut Tape, MouseReel
onsemi Switching Controllers 8 PHASE CONTROLLER WITH O
Datasheet
4 853In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5 000

Buck 250 kHz to 1.2 MHz 100 % 3.5 V - 10 C + 100 C SMD/SMT QFN-40 Reel, Cut Tape, MouseReel
onsemi Switching Controllers SWITCHING REGULATOR
Datasheet
2 325In Stock
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 100 kHz to 500 kHz 100 % 8 V 230 mA - 40 C + 150 C SMD/SMT SOIC-8 AEC-Q100 Reel, Cut Tape
Torex Semiconductor Switching Controllers 25V Input Synchronous Step-Down DCDC Converter
Datasheet
3 000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 300 kHz 98 % 1.5 V to 15 V 5 A - 40 C + 85 C SMD/SMT TSSOP-16 Reel, Cut Tape, MouseReel
Torex Semiconductor Switching Controllers 16V Input Step-Down DCDC Controller
Datasheet
3 000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Buck 1 Output 500 kHz 100 % Adjustable 3 A - 40 C + 85 C SMD/SMT SOT-25-5 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085MME/NOPB
Datasheet
1 511In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 500

Buck 1 Output 1 MHz 100 % 1.25 V to 42 V 1.75 A - 40 C + 125 C SMD/SMT VSSOP-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 42V On-Time PFET Buc k Switch Cntlr A 92 A 926-LM25085MY/NOPB
Datasheet
3 732In Stock
2 645Expected 9/4/2026
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1 MHz 100 % 1.25 V to 42 V 1.75 A - 40 C + 125 C SMD/SMT MSOP-PowerPad-8 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers WIDE RANGE SYNC BUCK CONTROLLER A 926-LM A 926-LM25116MHX/NOPB
Datasheet
417In Stock
Min.: 1
Mult.: 1

Buck 1 Output 590 kHz 85 % 1.215 V to 36 V 10 A - 40 C + 125 C SMD/SMT HTSSOP-20 Tube

Texas Instruments Switching Controllers 6-42V Wide Vin Curr ent Mode Synchronous A 926-LM25116MH/NOPB
Datasheet
842In Stock
2 500Expected 1/28/2027
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

Buck 1 Output 1 MHz 85 % 1.215 V to 36 V 10 A - 40 C + 125 C SMD/SMT HTSSOP-20 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers 4.5-42V Wide Vin Cu rrent Mode Dual Sync A 926-LM25119PSQE/NOPB
Datasheet
1 354In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 2 Output 50 kHz to 750 kHz 95 % 800 mV to 41.3 V 40 A - 40 C + 125 C SMD/SMT WQFN-32 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers Wide Input Range Dua l Sync Buck Cntlr A A 926-LM25119PSQ/NOPB
Datasheet
463In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 2 Output 50 kHz to 750 kHz 95 % 800 mV to 41.3 V 40 A - 40 C + 125 C SMD/SMT WQFN-32 Reel, Cut Tape, MouseReel

Texas Instruments Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MHE/NOPB A 926-LM3150MHE/NOPB
Datasheet
1 252In Stock
Min.: 1
Mult.: 1

Buck 1 Output 1 MHz 96 % 600 mV 12 A - 40 C + 125 C SMD/SMT HTSSOP-14 Tube

Texas Instruments Switching Controllers 42V SYNC STEP-DOWN A 926-LM3150MH/NOPB A A 926-LM3150MH/NOPB
Datasheet
1 867In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 250

Buck 1 Output 1 MHz 96 % 600 mV 12 A - 40 C + 125 C SMD/SMT HTSSOP-14 Reel, Cut Tape, MouseReel
Texas Instruments Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3475MFX/NOPB
Datasheet
4 481In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

Buck 1 Output 1.4 MHz 100 % 800 mV to 10 V 5 A - 40 C + 125 C SMD/SMT SOT-23-5 Reel, Cut Tape, MouseReel