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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


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Texas Instruments LM3485MM/NOPB
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926-LM3485MM/NOPB


To purchase full reel, order in multiples of 1000:
Texas Instruments Switching Controllers HYSTERETIC PFET BUCK CONTROLLER
Page 619

Data Sheet

Product Info.
14,602
In Stock
Alternative Packaging
Cut Tape
1: $1.68
10: $1.49
25: $1.34
50: $1.24
100: View
1,000: $0.585

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Texas Instruments LM5118MH/NOPB
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Texas Instruments Switching Controllers 4V-75V VIN BUCKBOOST CONTROLLER
Page 616

Data Sheet

Product Info.
3,007
In Stock
Alternative Packaging
1: $6.43
10: $5.79
25: $5.43
50: $5.27
100: View



Min.: 1
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Maxim Integrated MAX1745EUB+
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Maxim Integrated Switching Controllers Step-Down DC/DC Controller
Page 564

Data Sheet
2,263
In Stock
Alternative Packaging
1: $8.40
25: $5.66
50: $5.14
100: $4.04
250: View



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Mult.: 1
Texas Instruments LM3489MM/NOPB
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926-LM3489MM/NOPB


To purchase full reel, order in multiples of 1000:
Texas Instruments Switching Controllers HYSTERETIC PFET BUCK CONTROLLER
Page 619

Data Sheet

Product Info.
5,818
In Stock
Alternative Packaging
Cut Tape
1: $1.75
10: $1.55
25: $1.39
50: $1.29
100: View
1,000: $0.608

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Reel: 1,000
Texas Instruments TPS40200GDR
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595-TPS40200GDR


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Texas Instruments Switching Controllers Wide In Non-Sync Buck DC/DC Cntrlr
Data Sheet 1,961
In Stock
Cut Tape
1: $2.11
10: $1.90
25: $1.65
50: $1.55
100: View
2,500: $0.828

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Mult.: 1
Reel: 2,500
Texas Instruments LM5085MYE/NOPB
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926-LM5085MYE/NOPB


To purchase full reel, order in multiples of 250:
Texas Instruments Switching Controllers 75V COT PFET BUCK SWITCHING CONTROLLER
Page 620

Data Sheet

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2,250
In Stock
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1: $2.81
10: $2.53
25: $2.20
50: $2.06
Reel
250: $1.81
500: View

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Texas Instruments TPS40055PWPR
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595-TPS40055PWPR


To purchase full reel, order in multiples of 2000:
Texas Instruments Switching Controllers Wide Input Sync Buck Cntrlr source/sink
Page 622

Data Sheet
2,595
In Stock
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Cut Tape
1: $3.90
10: $3.48
25: $3.13
50: $2.99
100: View
2,000: $1.74

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Reel: 2,000
Texas Instruments TPS40057PWPR
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595-TPS40057PWPR


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Texas Instruments Switching Controllers Wide Input Sync Buck src/sink w/prebias
Page 622

Data Sheet
1,760
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1: $3.90
10: $3.48
25: $3.13
50: $2.99
100: View
2,000: $1.74

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Reel: 2,000
Texas Instruments LM5088MH-1/NOPB
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Texas Instruments Switching Controllers 5V Non-Synch Ecm Buck Contr
Page 614

Data Sheet

Product Info.
1,323
In Stock
Alternative Packaging
1: $4.43
10: $3.96
25: $3.56
50: $3.40
100: View



Min.: 1
Mult.: 1
Texas Instruments TPS40056PWP
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Texas Instruments Switching Controllers Wide Vin Synch Buck DC/DC Cntrlr
Data Sheet 1,650
In Stock
Alternative Packaging
1: $4.86
10: $4.34
25: $3.90
50: $3.73
100: View



Min.: 1
Mult.: 1
Texas Instruments LM25118MHE/NOPB
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926-LM25118MHE/NOPB


To purchase full reel, order in multiples of 250:
Texas Instruments Switching Controllers Wide Vltg Range Buck Boost Cntrlr
Data Sheet 1,387
In Stock
Cut Tape
1: $5.79
10: $5.17
25: $4.65
50: $4.45
Reel
250: $3.83
500: View

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Mult.: 1
Reel: 250
Texas Instruments TPS40055MPWPREP
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595-TPS40055MPWPREP


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Texas Instruments Switching Controllers Mil Enh Wide Input Synch Buck Cntrlr
Data Sheet 1,165
In Stock
Cut Tape
1: $5.79
10: $5.17
25: $4.65
50: $4.45
100: View
2,000: $2.58

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Min.: 1
Mult.: 1
Reel: 2,000
Texas Instruments LM25118MH/NOPB
Enlarge
Texas Instruments Switching Controllers Wide Vltg Range Buck Boost Cntrlr
Data Sheet 2,002
In Stock
1: $6.05
10: $5.40
25: $4.86
50: $4.64
100: View



Min.: 1
Mult.: 1
Texas Instruments LM5117PMH/NOPB
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Texas Instruments Switching Controllers Wide Input Range Sync Buck Cntlr
Data Sheet

Product Info.
1,319
In Stock
Alternative Packaging
1: $6.35
10: $5.67
25: $5.10
50: $4.87
100: View



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Texas Instruments LM5118Q1MH/NOPB
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Texas Instruments Switching Controllers Hv Ecm Buck-Boost Controller
Page 615

Data Sheet

Product Info.
378
In Stock
Alternative Packaging
1: $7.42
10: $6.68
25: $6.26
50: $6.08
100: View



Min.: 1
Mult.: 1
Maxim Integrated MAX1745AUB+
Enlarge
Maxim Integrated Switching Controllers Step-Down DC/DC Controller
Data Sheet 962
In Stock
More Info Available
Alternative Packaging
1: $8.26
25: $5.56
50: $5.09
100: $4.01
250: View



Min.: 1
Mult.: 1
Texas Instruments TPS40055PWP
Enlarge
Texas Instruments Switching Controllers Wide Input Sync Buck Cntrlr source/sink
Page 622

Data Sheet
516
In Stock
Alternative Packaging
1: $4.68
10: $4.18
25: $3.76
50: $3.59
100: View



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Texas Instruments TPS40060PWP
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Texas Instruments Switching Controllers Wide Input Synch Buck Controller
Data Sheet 406
In Stock
Alternative Packaging
1: $4.84
10: $4.32
25: $3.88
50: $3.71
100: View



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Texas Instruments LM5642XMT/NOPB
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Texas Instruments Switching Controllers 375Khz Dual Synch Buck Controller
Page 614

Data Sheet

Product Info.
365
In Stock
Alternative Packaging
1: $5.29
10: $4.72
25: $4.25
50: $4.06
100: View



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Texas Instruments LM25119PSQE/NOPB
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926-LM25119PSQE/NOPB


To purchase full reel, order in multiples of 250:
Texas Instruments Switching Controllers Wide Input Range Dual Sync Buck Cntlr
Data Sheet

Product Info.
353
In Stock
Cut Tape
1: $6.72
10: $6.05
25: $5.67
50: $5.51
Reel
250: $4.57
500: View

MouseReel Available


Min.: 1
Mult.: 1
Reel: 250
Texas Instruments LM5088MH-2/NOPB
Enlarge
Texas Instruments Switching Controllers 5V Non-Synch Ecm Buck Contr
Page 614

Data Sheet

Product Info.
275
In Stock
Alternative Packaging
1: $4.43
10: $3.96
25: $3.56
50: $3.40
100: View



Min.: 1
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Texas Instruments TPS40054PWPG4
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Texas Instruments Switching Controllers Wide Input Freq Synch Buck Cntrlr
Data Sheet

Product Info.
87
In Stock
Alternative Packaging
1: $4.68
10: $4.18
25: $3.76
50: $3.59
100: View



Min.: 1
Mult.: 1
Texas Instruments TPS40054PWP
Enlarge
Texas Instruments Switching Controllers Wide Input Synch Buck Controller
Data Sheet 83
In Stock
Alternative Packaging
1: $4.68
10: $4.18
25: $3.76
50: $3.59
100: View



Min.: 1
Mult.: 1
Texas Instruments TPS40057PWP
Enlarge
Texas Instruments Switching Controllers Wide Input Sync Buck src/sink w/prebias
Data Sheet 184
In Stock
Alternative Packaging
1: $4.68
10: $4.18
25: $3.76
50: $3.59
100: View



Min.: 1
Mult.: 1
Texas Instruments TPS40061PWP
Enlarge
Texas Instruments Switching Controllers Wide Input Sync Buck Cntrlr source/sink
Page 622

Data Sheet
245
In Stock
Alternative Packaging
1: $4.84
10: $4.32
25: $3.88
50: $3.71
100: View



Min.: 1
Mult.: 1
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