Switching Controllers – Mouser Taiwan

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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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Part #

Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start

MIC2128YML-TR
Microchip Technology
1: NT$55.57
5,204In Stock

Mfr. Part #
MIC2128YML-TR

Mouser Part #
579-MIC2128YML-TR

Microchip Technology

Switching Controllers 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start

Learn More

Datasheet

5,204In Stock

Cut Tape

NT$55.57

NT$54.85

NT$48.04

NT$47.68

View

Reel

NT$44.81

Min.: 1
Mult.: 1

: 5,000

Buck

1 Output

270 kHz to 800 kHz

85 %

600 mV to 30 V

- 40 C

+ 125 C

SMD/SMT

VQFN-16

Reel, Cut Tape

Switching Controllers Hi Speed C Mode Pulse Width Mods

LT1243CN8#PBF
Analog Devices
1: NT$256.33
336In Stock

Mfr. Part #
LT1243CN8#PBF

Mouser Part #
584-LT1243CN8#PBF

Analog Devices

Switching Controllers Hi Speed C Mode Pulse Width Mods

Datasheet

336In Stock

NT$256.33

NT$193.59

NT$176.74

NT$166.34

NT$155.59

Min.: 1
Mult.: 1
Max.: 336

Buck

1 Output

500 kHz

96 %

5 V

1 A

0 C

+ 100 C

Through Hole

PDIP-8

Tube

Switching Controllers Hi Speed C Mode Pulse Width Mods

LT1244IS8#PBF
Analog Devices
1: NT$318.35
355In Stock

Mfr. Part #
LT1244IS8#PBF

Mouser Part #
584-LT1244IS8#PBF

Analog Devices

Switching Controllers Hi Speed C Mode Pulse Width Mods

Datasheet

355In Stock

NT$318.35

NT$246.65

NT$225.86

NT$209.01

NT$200.04

Min.: 1
Mult.: 1
Max.: 355

Buck

1 Output

500 kHz

96 %

5 V

1 A

- 40 C

+ 100 C

SMD/SMT

SOIC-8

Tube

Switching Controllers Hi Pwr Sync DC/DC Cntr

LT1339CSW#PBF
Analog Devices
1: NT$647.45
128In Stock

Mfr. Part #
LT1339CSW#PBF

Mouser Part #
584-LT1339CSW#PBF

Analog Devices

Switching Controllers Hi Pwr Sync DC/DC Cntr

Datasheet

128In Stock

NT$647.45

NT$514.09

NT$472.86

NT$447.05

Min.: 1
Mult.: 1
Max.: 128

Boost, Buck

1 Output

150 kHz

90 %

Adjustable

30 A

0 C

+ 70 C

SMD/SMT

SOIC-20

Tube

Switching Controllers PP, Hi Eff, Sync Buck Sw Reg

LTC1629IG#PBF
Analog Devices
1: NT$883.34
635In Stock

Mfr. Part #
LTC1629IG#PBF

Mouser Part #
584-LTC1629IG#PBF

Analog Devices

Switching Controllers PP, Hi Eff, Sync Buck Sw Reg

Datasheet

635In Stock

NT$883.34

NT$709.11

NT$641.72

NT$608.02

View

Min.: 1
Mult.: 1
Max.: 635

Buck

2 Output

300 kHz

99 %

1.26 V to 2.5 V

240 A

- 40 C

+ 85 C

SMD/SMT

SSOP-28

Tube

Switching Controllers Low IQ Triple Output Buck-Buck-Boost CTL

LTC7811IUJ#PBF
Analog Devices
1: NT$344.88
485In Stock

Mfr. Part #
LTC7811IUJ#PBF

Mouser Part #
584-LTC7811IUJ#PBF

Analog Devices

Switching Controllers Low IQ Triple Output Buck-Buck-Boost CTL

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Datasheet

485In Stock

NT$344.88

NT$268.52

NT$238.76

NT$229.44

NT$219.04

Min.: 1
Mult.: 1
Max.: 485

Boost, Buck

3 Output

100 kHz to 3 MHz

100 %

800 mV to 40 V

20 A

- 40 C

+ 125 C

SMD/SMT

QFN-40

Tube

Switching Controllers BiCMOS Advanced Phas e Shift

UCC3895N
Texas Instruments
1: NT$310.82
391In Stock

Mfr. Part #
UCC3895N

Mouser Part #
595-UCC3895N

Texas Instruments

Switching Controllers BiCMOS Advanced Phas e Shift

Datasheet

391In Stock

NT$310.82

NT$224.42

NT$211.52

NT$199.33

View

Min.: 1
Mult.: 1

Boost, Buck

4 Output

1 MHz

100 %

5 V

100 mA

0 C

+ 70 C

Through Hole

PDIP-20

Tube

Switching Controllers 16V Step-Down DCDC Controller

XC9221A09AMR-G
Torex Semiconductor
1: NT$48.76
2,750In Stock

Mfr. Part #
XC9221A09AMR-G

Mouser Part #
865-XC9221A09AMR-G

Torex Semiconductor

Switching Controllers 16V Step-Down DCDC Controller

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Datasheet

2,750In Stock

Cut Tape

NT$48.76

NT$35.42

NT$31.98

NT$28.29

Reel

NT$23.66

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

1 MHz

100 %

1.2 V

3 A

- 40 C

+ 85 C

SMD/SMT

SOT-25-5

Reel, Cut Tape, MouseReel

Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085SDE/NOPB

LM25085SD/NOPB
Texas Instruments
1: NT$84.61
3,000In Stock

Mfr. Part #
LM25085SD/NOPB

Mouser Part #
926-LM25085SD/NOPB

Texas Instruments

Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085SDE/NOPB

Datasheet

3,000In Stock

Cut Tape

NT$84.61

NT$63.10

NT$57.36

NT$51.62

Reel

NT$42.66

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

1 MHz

100 %

1.25 V to 42 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

LLP-8

Reel, Cut Tape, MouseReel

Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477AMMX/NOPB

LM3477AMM/NOPB
Texas Instruments
1: NT$118.66
811In Stock

Mfr. Part #
LM3477AMM/NOPB

Mouser Part #
926-LM3477AMM/NOPB

Texas Instruments

Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477AMMX/NOPB

Datasheet

811In Stock

Cut Tape

NT$118.66

NT$88.91

NT$81.74

NT$73.49

Reel

NT$64.89

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

500 kHz

93 %

1.265 V

6 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477MM/NOPB

LM3477MMX/NOPB
Texas Instruments
1: NT$100.74
4,032In Stock

Mfr. Part #
LM3477MMX/NOPB

Mouser Part #
926-LM3477MMX/NOPB

Texas Instruments

Switching Controllers High Efficiency High -Side N-Channel Con A 926-LM3477MM/NOPB

Datasheet

4,032In Stock

Cut Tape

NT$100.74

NT$75.29

NT$68.83

NT$61.66

Reel

NT$49.83

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

Buck

1 Output

500 kHz

93 %

1.265 V

6 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers 38V DC-DC Buck Controller with HLL

MIC2101YML-TR
Microchip Technology
1: NT$51.98
6,968In Stock

Mfr. Part #
MIC2101YML-TR

Mouser Part #
998-MIC2101YMLTR

Microchip Technology

Switching Controllers 38V DC-DC Buck Controller with HLL

Datasheet

6,968In Stock

Cut Tape

NT$51.98

NT$47.32

Reel

NT$43.38

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Buck

1 Output

200 kHz to 600 kHz

85 %

800 mV to 24 V

15 A

- 40 C

+ 125 C

SMD/SMT

MLF-16

Reel, Cut Tape, MouseReel

Switching Controllers Monolithic High Speed SMPS Controller

MIC38HC43YM-TR
Microchip Technology
1: NT$68.12
1,960In Stock

Mfr. Part #
MIC38HC43YM-TR

Mouser Part #
998-MIC38HC43YMTR

Microchip Technology

Switching Controllers Monolithic High Speed SMPS Controller

Datasheet

1,960In Stock

Cut Tape

NT$68.12

NT$56.64

NT$50.55

Reel

NT$50.55

NT$50.19

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

500 kHz

96 %

5 V

1 A

- 40 C

+ 85 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers COOLSET

ICE5AR3995BZXKLA1
Infineon Technologies
1: NT$59.51
1,680In Stock

Mfr. Part #
ICE5AR3995BZXKLA1

Mouser Part #
726-ICE5AR3995BZXKLA

Infineon Technologies

Switching Controllers COOLSET

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Datasheet

1,680In Stock

NT$59.51

NT$43.74

NT$37.28

NT$35.28

View

Min.: 1
Mult.: 1

Buck, Flyback

1 Output

65 kHz

80 %

15 V

- 40 C

+ 150 C

Through Hole

DIP-7

Tube

Switching Controllers Digitally enhanced power analog buck controller

MCP19122-E/MJ
Microchip Technology
1: NT$198.97
359In Stock

Mfr. Part #
MCP19122-E/MJ

Mouser Part #
579-MCP19122-E/MJ

Microchip Technology

Switching Controllers Digitally enhanced power analog buck controller

Learn More

Datasheet

359In Stock

NT$198.97

NT$176.74

NT$162.76

NT$162.40

Quote

Min.: 1
Mult.: 1

Buck

1 Output

100 kHz to 1.6 MHz

100 %

300 mV to 16 V

4 A

- 40 C

+ 125 C

SMD/SMT

QFN-24

Tube

Switching Controllers 3-20V Wide Input Syn ch Buck Cntrlr A 59 A 595-TPS40304DRCR

TPS40304DRCT
Texas Instruments
1: NT$117.23
4,974In Stock

Mfr. Part #
TPS40304DRCT

Mouser Part #
595-TPS40304DRCT

Texas Instruments

Switching Controllers 3-20V Wide Input Syn ch Buck Cntrlr A 59 A 595-TPS40304DRCR

Datasheet

4,974In Stock

Cut Tape

NT$117.23

NT$88.19

NT$80.66

NT$72.78

Reel

NT$68.47

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

600 kHz

90 %

600 mV to 18 V

25 A

- 40 C

+ 125 C

SMD/SMT

VSON-10

Reel, Cut Tape, MouseReel

Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085AMME/NOPB

LM25085AMM/NOPB
Texas Instruments
1: NT$106.12
920In Stock

Mfr. Part #
LM25085AMM/NOPB

Mouser Part #
926-LM25085AMM/NOPB

Texas Instruments

Switching Controllers 4.5-42V Wide Vin Co nstant On-Time Non-S A 926-LM25085AMME/NOPB

Datasheet

920In Stock

Cut Tape

NT$106.12

NT$79.59

NT$72.78

NT$65.25

Reel

NT$56.28

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

1 MHz

100 %

900 mV to 42 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTC/NOPB

LM2737MTCX/NOPB
Texas Instruments
1: NT$83.53
3,093In Stock

Mfr. Part #
LM2737MTCX/NOPB

Mouser Part #
926-LM2737MTCX/NOPB

Texas Instruments

Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTC/NOPB

Datasheet

3,093In Stock

Cut Tape

NT$83.53

NT$62.02

NT$56.64

NT$50.55

Reel

NT$43.02

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck

1 Output

600 kHz

90 %

600 mV to 5 V

20 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-14

Reel, Cut Tape, MouseReel

Switching Controllers 60V Low IQ Buck Ctlr

LTC3372EUK#PBF
Analog Devices
1: NT$625.58
619In Stock

Mfr. Part #
LTC3372EUK#PBF

Mouser Part #
584-3372EUKPB

Analog Devices

Switching Controllers 60V Low IQ Buck Ctlr

Learn More

Datasheet

619In Stock

NT$625.58

NT$496.52

NT$465.33

NT$430.92

View

Min.: 1
Mult.: 1
Max.: 639

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

Switching Controllers L IQ, 38V Sync Boost+Buck Cntr

LTC7812IUH#PBF
Analog Devices
1: NT$481.11
477In Stock

Mfr. Part #
LTC7812IUH#PBF

Mouser Part #
584-LTC7812IUH#PBF

Analog Devices

Switching Controllers L IQ, 38V Sync Boost+Buck Cntr

Learn More

Datasheet

477In Stock

NT$481.11

NT$378.58

NT$330.54

NT$318.71

NT$309.39

Min.: 1
Mult.: 1
Max.: 479

Boost, Buck

2 Output

850 kHz

100 %

800 mV to 60 V

20 A

- 40 C

+ 125 C

SMD/SMT

QFN-32

Tube

Switching Controllers 3-V to 36-V 4-A lo w -noise synchronous

LM61440AANRJRR
Texas Instruments
1: NT$153.80
4,647In Stock

Mfr. Part #
LM61440AANRJRR

Mouser Part #
595-LM61440AANRJRR

Texas Instruments

Switching Controllers 3-V to 36-V 4-A lo w -noise synchronous

Learn More

Datasheet

4,647In Stock

Cut Tape

NT$153.80

NT$116.51

NT$107.19

NT$97.15

View

Reel

NT$81.02

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

Switching Controllers Monolithic SMPS Controller

MIC38C43YN
Microchip Technology
1: NT$57.72
323In Stock

Mfr. Part #
MIC38C43YN

Mouser Part #
998-MIC38C43YN

Microchip Technology

Switching Controllers Monolithic SMPS Controller

Datasheet

323In Stock

NT$57.72

NT$57.36

NT$48.40

NT$47.68

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

96 %

5 V

500 mA

- 40 C

+ 85 C

Through Hole

DIP-8

Tube

Switching Controllers 500KHz Synchronous Buck Controller

MIC2169AYMM
Microchip Technology
1: NT$99.66
89In Stock

Mfr. Part #
MIC2169AYMM

Mouser Part #
998-MIC2169AYMM

Microchip Technology

Switching Controllers 500KHz Synchronous Buck Controller

Datasheet

89In Stock

NT$99.66

NT$93.93

NT$92.49

NT$92.13

View

Min.: 1
Mult.: 1

Buck

1 Output

500 kHz

92 %

800 mV

- 40 C

+ 125 C

SMD/SMT

MSOP-10

Tube

Switching Controllers Monolithic SMPS Controller

MIC38C42-1YM
Microchip Technology
1: NT$129.42
196In Stock

Mfr. Part #
MIC38C42-1YM

Mouser Part #
998-MIC38C42-1YM

Microchip Technology

Switching Controllers Monolithic SMPS Controller

Datasheet

196In Stock

NT$129.42

NT$118.31

NT$98.59

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

Switching Controllers Monolithic SMPS Controller

MIC38C42AYM
Microchip Technology
1: NT$93.21
87In Stock

Mfr. Part #
MIC38C42AYM

Mouser Part #
998-MIC38C42AYM

Microchip Technology

Switching Controllers Monolithic SMPS Controller

Datasheet

87In Stock

NT$93.21

NT$78.87

NT$68.83

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

Buck Converters for Power Over Ethernet

Customer Service Office

Company

Resources

Support

650 Hz to 80 kHz
35 kHz to 500 kHz
50 kHz to 1 MHz
50 kHz to 300 kHz
50 kHz to 500 kHz
50 kHz to 750 kHz
50 kHz to 850 kHz
50 kHz to 900 kHz
60 kHz
65 kHz
70 kHz
70 kHz to 130 kHz
80 kHz to 600 kHz
100 kHz
100 kHz to 1 MHz
100 kHz to 1.6 MHz
100 kHz to 2.2 MHz
100 kHz to 2.5 MHz
100 kHz to 2.64 MHz
100 kHz to 3 MHz

80 %
81 %
82 %
83 %
84 %
85 %
86 %
87.5 %
88 %
89 %
90 %
91 %
92 %
93 %
95 %
96 %
97 %
98 %
98.75 %
99 %

0 V to 60 V
100 mV to 100 V
300 mV to 16 V
400 mV to 2.5 V
400 mV to 4.73 V
500 mV
500 mV to 1.27 V
500 mV to 3.6 V
500 mV to 5.25 V
500 mV to 5.5 V
591 mV
591 mV to 14.4 V
591 mV to 17 V
600 mV
600 mV to 12.75 V
600 mV to 13.5 V
600 mV to 17 V
600 mV to 18 V
600 mV to 18.6 V
600 mV to 19 V

1 uA
13.2 uA
52.5 uA
65 uA
105 uA
130 uA
180 uA
200 uA
800 uA
1 mA
2 mA
4 mA
5 mA
6 mA
8 mA
20 mA
25 mA
30 mA
37 mA
40 mA

CFP-8
CPAK-20
DFN-10
DFNW-10
DIP-7
DIP-8
GQFN-48
HTQFP-48
HTSSOP-14
HTSSOP-16
HTSSOP-20
HTSSOP-38
LFCSP-20
LFCSP-32
LLP-8
LQFP-48
MLF-12
MLF-16
MLF-32
MSOP-10