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All Products > Semiconductors > Power Management ICs > Switching Controllers

PoE - Buck Converter

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

Category   Semiconductors >  Power Management ICs >  Switching Controllers

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Compare up to 20 parts.
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Quantity RoHS Topology Number of Outputs Switching Frequency Duty Cycle - Max Input Voltage Output Voltage Output Current Maximum Operating Temperature Mounting Style Package / Case Packaging
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Maxim Integrated MAX15301AA02+CJK
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MAX15301AA02+CJK

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Maxim Integrated Switching Controllers InTune Digital Point of Load Controller
Data Sheet 428
In Stock
1: $9.22
25: $6.22
50: $5.87
100: $4.48
250: View



Min.: 1
Mult.: 1
Buck 1 Output 300 kHz to 1 MHz 95 % 4.5 V to 14 V 500 mV to 5.25 V 40 A + 85 C SMD/SMT TQFN-EP-32 Tube
Texas Instruments UCC28911D
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UCC28911D

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Texas Instruments Switching Controllers 700V Flyback Switchr w/constant-voltage
Data Sheet 296
In Stock
Alternative Packaging
1: $2.83
10: $2.55
25: $2.21
50: $2.08
100: View



Min.: 1
Mult.: 1
Buck, Flyback 1 Output 115 kHz 99 % 115 V/230 V 5 V 1.2 A + 125 C SMD/SMT SOIC-7 Tube
International Rectifier IR3622MTRPBF
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942-IR3622MTRPBF


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International Rectifier Switching Controllers HI FREQ 2-PHASE Single or Dual SYNCH
Data Sheet 6,997
In Stock
Cut Tape
1: $4.35
10: $2.50
100: $2.36
250: $2.21
Reel
3,000: $1.94
6,000: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,000
Buck 2 Output 600 kHz 84 % 6.7 V to 16 V 0.8 V + 125 C SMD/SMT MLPQ-32 Reel
Maxim Integrated MAX17409GTI+
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Maxim Integrated Switching Controllers 1-Phase Quick-PWM
Data Sheet 2,500
In Stock
Alternative Packaging
1: $13.29
25: $9.62
50: $8.12
100: $6.42
250: View



Min.: 1
Mult.: 1
Buck 1 Output 600 kHz 100 % 20 A + 105 C SMD/SMT TQFN-28 Tube
Texas Instruments TPS51220ARTVR
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595-TPS51220ARTVR


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Texas Instruments Switching Controllers Fixed-Freq,Notebook Sys Pwr Controller
Data Sheet 2,830
In Stock
Alternative Packaging
Cut Tape
1: $5.67
10: $5.06
25: $4.55
50: $4.35
100: View
3,000: $2.53

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,000
Buck 2 Output 303 kHz 99 % 1 V to 12 V + 85 C SMD/SMT WQFN-32 Reel
Texas Instruments LM5116WG/NOPB
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Texas Instruments Switching Controllers Wide Range Sync Buck Controller
Data Sheet 75
In Stock
1: $156.59
5: $154.44
10: $149.04
25: $145.94
50: View



Min.: 1
Mult.: 1
Buck 1 Output 200 kHz, 535 kHz 98 % 6 V to 100 V 1.215 V to 80 V 3.5 A + 125 C SMD/SMT CPAK Tray
Texas Instruments LM27403SQ/NOPB
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595-LM27403SQ/NOPB


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LM27403SQ/NOPB

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Texas Instruments Switching Controllers High Perf Sync Buck Controller
Page 615

Data Sheet
9,234
In Stock
Alternative Packaging
Cut Tape
1: $2.73
10: $2.46
25: $2.13
50: $2.00
100: View
1,000: $1.06

MouseReel Available


Min.: 1
Mult.: 1
Reel: 1,000
Buck 1 Output 1050 kHz 93 % 20 V 4.7 V + 125 C SMD/SMT WQFN-24 Reel
International Rectifier IR36021MTRPBF
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942-IR36021MTRPBF


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International Rectifier Switching Controllers Buck Controller I2C 200kHz to 2MHz
Page 549

Data Sheet
2,712
In Stock
More Info Available
Cut Tape
1: $7.41
10: $4.27
100: $4.03
250: $3.77
500: View
3,000: $3.31

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,000
Buck 2 Output 200 kHz to 2 MHz 85 % 2.9 V to 3.63 V - 35 mV to + 40 mV 104 uA + 85 C SMD/SMT PQFN-32 Reel
Microchip Technology MCP16321T-500E/NG
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579-MCP16321T-500ENG


To purchase full reel, order in multiples of 3300:
Microchip Technology Switching Controllers 1A Synchrouns Buck Switcher 24Vin
Data Sheet 2,947
In Stock
Cut Tape
1: $1.32
10: $1.21
25: $1.01
100: $0.92
Reel
3,300: $0.92

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,300
Buck 1 Output 1 MHz 99 % 6 V to 24 V 5 V 1 A + 125 C SMD/SMT QFN-16 Reel
Texas Instruments UC3825N
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Texas Instruments Switching Controllers High Speed PWM Controller
Page 607

Data Sheet
1,147
In Stock
1: $5.32
10: $4.27
100: $3.89
250: $3.51
500: View



Min.: 1
Mult.: 1
Buck, Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull 2 Output 1000 kHz 85 % 5 V to 5.2 V 1500 mA + 70 C Through Hole PDIP-16 Tube
Maxim Integrated MAX1640EEE+
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Maxim Integrated Switching Controllers Adj-Out Switch Mode Current Source
Data Sheet 703
In Stock
Alternative Packaging
1: $7.94
25: $5.36
50: $5.06
100: $3.87
250: View



Min.: 1
Mult.: 1
Buck 1 Output 500 kHz 100 % 2 V to 24 V 1 uA + 85 C SMD/SMT QSOP-16 Tube
Texas Instruments TPS40200HD
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Texas Instruments Switching Controllers Wide In Non-Synch Buck DC/DC Cntrlr
Data Sheet 33
In Stock
More Info Available
Alternative Packaging
1: $92.07
10: $86.48
25: $79.79
50: $77.56
100: View



Min.: 1
Mult.: 1
Buck 1 Output 280 kHz 98 % 52 V 700 mV 2.5 A + 175 C SMD/SMT SOIC-8 Tube
Texas Instruments TPS40304DRCR
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595-TPS40304DRCR


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Texas Instruments Switching Controllers 3-20V Wide Input Synch Buck Cntrlr
Data Sheet 5,676
In Stock
Alternative Packaging
Cut Tape
1: $2.73
10: $2.46
25: $2.13
50: $2.00
100: View
3,000: $1.06

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,000
Buck 1 Output 600 kHz 90 % 12 V 6.5 V 20 A + 125 C SMD/SMT VSON-10 Reel
Maxim Integrated MAX1954EUB+
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Maxim Integrated Switching Controllers High-f Current-Mode PWM Buck Controller
Page 559

Data Sheet
621
In Stock
Alternative Packaging
1: $5.38
25: $3.77
50: $3.57
100: $2.51
250: View



Min.: 1
Mult.: 1
Boost, Buck 1 Output 300 kHz 89 % 0.8 V to 11.35 V 25000 mA + 85 C SMD/SMT USOP-10 Tube
Maxim Integrated MAX1953EUB+
 Enlarge
Maxim Integrated Switching Controllers High-f Current-Mode PWM Buck Controller
Page 559

Data Sheet
1,231
In Stock
Alternative Packaging
1: $5.38
25: $3.77
50: $3.57
100: $2.51
250: View



Min.: 1
Mult.: 1
Boost, Buck 1 Output 1000 kHz 89 % 0.8 V to 4.73 V 4000 mA + 85 C SMD/SMT USOP-10 Tube
Texas Instruments TPS51218DSCR
 Enlarge
595-TPS51218DSCR


To purchase full reel, order in multiples of 3000:
Texas Instruments Switching Controllers 3-28V In,20A Synch Step Down Cntrlr
Data Sheet 2,975
In Stock
Alternative Packaging
Cut Tape
1: $3.27
10: $2.92
25: $2.63
50: $2.51
100: View
3,000: $1.46

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,000
Buck 1 Output 465 kHz 91 % 3 V to 28 V 700 mV to 2.6 V 0 A to 20 A + 85 C SMD/SMT WSON-10 Reel
Microchip Technology MCP16322T-330E/NG
 Enlarge
579-MCP16322T-330ENG


To purchase full reel, order in multiples of 3300:
Microchip Technology Switching Controllers 2A Synchrouns Buck Switcher 24Vin
Data Sheet 1,717
In Stock
Cut Tape
1: $1.48
10: $1.35
25: $1.13
100: $1.02
Reel
3,300: $1.02

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,300
Buck 1 Output 1.1 MHz 99 % 6 V to 24 V 3.3 V 2 A + 125 C SMD/SMT QFN-16 Reel
Microchip Technology MCP16321T-ADJE/NG
 Enlarge
579-MCP16321T-ADJENG


To purchase full reel, order in multiples of 3300:
Microchip Technology Switching Controllers 1A Synchrouns Buck Switcher 24Vin
Data Sheet 2,505
In Stock
Cut Tape
1: $1.32
10: $1.21
25: $1.01
100: $0.92
Reel
3,300: $0.92

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,300
Buck 1 Output 1 MHz 99 % 6 V to 24 V 0.9 V to 5 V 1 A + 125 C SMD/SMT QFN-16 Reel
Microchip Technology MCP16322T-ADJE/NG
 Enlarge
579-MCP16322T-ADJENG


To purchase full reel, order in multiples of 3300:
Microchip Technology Switching Controllers 2A Synchrouns Buck Switcher 24Vin
Data Sheet 3,364
In Stock
Cut Tape
1: $1.48
10: $1.35
25: $1.13
100: $1.02
Reel
3,300: $1.02

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,300
Buck 1 Output 1.1 MHz 99 % 6 V to 24 V Adjustable 2 A + 125 C SMD/SMT QFN-16 Reel
ON Semiconductor NCP6151S52MNR2G
 Enlarge
863-NCP6151S52MNR2G


To purchase full reel, order in multiples of 2500:
ON Semiconductor Switching Controllers MULTIPHASE CONTROLLER
Data Sheet 3,182
In Stock
Cut Tape
1: $1.92
10: $1.55
100: $1.24
500: $1.09
Reel
2,500: $0.837
5,000: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 2,500
Buck 2 Output 200 kHz to 1 MHz 100 % 4.75 V to 5.25 V + 125 C SMD/SMT QFN-52 Reel
Texas Instruments TPS40305DRCR
 Enlarge
595-TPS40305DRCR


To purchase full reel, order in multiples of 3000:
Texas Instruments Switching Controllers 3-20V Wide Input Sync Buck Controller
Data Sheet 1,479
In Stock
Alternative Packaging
Cut Tape
1: $2.73
10: $2.46
25: $2.13
50: $2.00
100: View
3,000: $1.06

MouseReel Available


Min.: 1
Mult.: 1
Reel: 3,000
Buck 1 Output 1.2 MHz 85 % 20 V 6.5 V 10 A + 125 C SMD/SMT VSON-10 Reel
Texas Instruments LM27402SQ/NOPB
 Enlarge
926-LM27402SQ/NOPB


To purchase full reel, order in multiples of 1000:
Texas Instruments Switching Controllers High Perf Sync Buck Cntrlr
Data Sheet

Product Info.
1,383
In Stock
Alternative Packaging
Cut Tape
1: $3.16
10: $2.85
25: $2.47
50: $2.32
100: View
1,000: $1.23

MouseReel Available


Min.: 1
Mult.: 1
Reel: 1,000
Buck 1 Output 200 kHz to 1.2 MHz 95 % 3 V to 20 V 0.6 V to 18.6 V 30 A + 125 C SMD/SMT WQFN-16 Reel
STMicroelectronics L6910
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STMicroelectronics Switching Controllers 5.0 to 12V Step-Down
Data Sheet 968
In Stock
Alternative Packaging
1: $3.62
10: $2.91
100: $2.59
250: $2.39
500: View



Min.: 1
Mult.: 1
Synchronous Buck 3 Output 230 kHz 100 % 15 V 4 V 20 mA + 150 C SMD/SMT SO-16 Tube
Maxim Integrated MAX1953EUB+T
 Enlarge
700-MAX1953EUBT


To purchase full reel, order in multiples of 2500:
Maxim Integrated Switching Controllers High-f Current-Mode PWM Buck Controller
Data Sheet 2,500
In Stock
Alternative Packaging
Cut Tape
1: $4.62
25: $3.53
50: $3.36
100: $3.09
Reel
2,500: $2.12
5,000: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 2,500
Boost, Buck 1 Output 1000 kHz 89 % 0.8 V to 4.73 V 4000 mA + 85 C SMD/SMT USOP-10 Reel
Maxim Integrated MAX1626ESA+T
 Enlarge
700-MAX1626ESAT


To purchase full reel, order in multiples of 2500:
Maxim Integrated Switching Controllers 5/3.3V or Adjustable 100% Duty Cycle
Data Sheet 1,730
In Stock
Alternative Packaging
Cut Tape
1: $3.55
25: $2.84
50: $2.70
100: $2.49
Reel
2,500: $1.72
5,000: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 2,500
Buck 1 Output 300 kHz 100 % 3 V to 16.5 V 3.3 V, 5 V 3 A + 85 C SMD/SMT SOIC-Narrow-8 Reel
Compare up to 20 parts.
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