Switching Controllers – Mouser Japan

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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 AUTO CAT WIDE-INPUT SYNCH BUCK

TPS40051QPWPRQ1
Texas Instruments
1: ¥812.2
5,506In Stock

Mfr. Part #
TPS40051QPWPRQ1

Mouser Part #
595-TPS40051QPWPRQ1

Texas Instruments

Switching Controllers AUTO CAT WIDE-INPUT SYNCH BUCK

Datasheet

5,506In Stock

Cut Tape

¥812.2

¥785.7

¥775.7

¥727.5

View

Reel

¥621.2

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Buck

1 Output

100 kHz to 1 MHz

85 %

700 mV to 35 V

20 A

- 40 C

+ 125 C

SMD/SMT

HTSSOP-16

AEC-Q100

Reel, Cut Tape, MouseReel

Switching Controllers Wide In Non-Sync Buc k DC/DC Cntrlr

TPS40200GDR
Texas Instruments
1: ¥410.3
29,610In Stock

Mfr. Part #
TPS40200GDR

Mouser Part #
595-TPS40200GDR

Texas Instruments

Switching Controllers Wide In Non-Sync Buc k DC/DC Cntrlr

Datasheet

29,610In Stock

Cut Tape

¥410.3

¥305.6

¥279

¥249.2

Reel

¥202.6

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck

1 Output

35 kHz to 500 kHz

95 %

700 mV to 46 V

3 A

- 40 C

+ 85 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7 A IQ and Optional Bypass Mode

MAX25208ATPA/VY+
Analog Devices / Maxim Integrated
1: ¥1,101.2
5,675In Stock

Mfr. Part #
MAX25208ATPA/VY+

Mouser Part #
700-MAX25208ATPA/VY+

Analog Devices / Maxim Integrated

Switching Controllers Versatile Automotive 60V/70V 2.2MHz Buck Controller with 7 A IQ and Optional Bypass Mode

Learn More

Datasheet

5,675In Stock

¥1,101.2

¥930.2

¥828.8

¥803.9

View

Min.: 1
Mult.: 1

Buck

1 Output

220 kHz to 2.2 MHz

99 %

5 V

- 40 C

+ 125 C

SMD/SMT

TQFN-EP-20

Tray

Switching Controllers 150V L IQ, 2x, 2-PhSync Buck DC/DC Cntr

LTC7810HLXE#PBF
Analog Devices
1: ¥3,139.3
2,204In Stock

Mfr. Part #
LTC7810HLXE#PBF

Mouser Part #
584-LTC7810HLXEPBF

Analog Devices

Switching Controllers 150V L IQ, 2x, 2-PhSync Buck DC/DC Cntr

Learn More

Datasheet

2,204In Stock

¥3,139.3

¥2,499.8

¥2,338.7

¥2,162.6

View

Min.: 1
Mult.: 1

Buck

2 Output

50 kHz to 750 kHz

100 %

1 V to 60 V

105 uA

- 40 C

+ 150 C

SMD/SMT

LQFP-48

Tray

Switching Controllers Wide Input Range Syn c Buck Cntlr A 926- A 926-LM5117PMH/NOPB

LM5117PMHE/NOPB
Texas Instruments
1: ¥1,237.4
493In Stock

Mfr. Part #
LM5117PMHE/NOPB

Mouser Part #
595-LM5117PMHE/NOPB

Texas Instruments

Switching Controllers Wide Input Range Syn c Buck Cntlr A 926- A 926-LM5117PMH/NOPB

Datasheet

493In Stock

Cut Tape

¥1,237.4

¥955.1

¥883.7

¥805.6

Reel

¥717.6

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

50 kHz to 750 kHz

98 %

800 mV to 62 V

20 A

- 40 C

+ 125 C

SMD/SMT

HTSSOP-20

Reel, Cut Tape, MouseReel

Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3802D

UCC3802DTR
Texas Instruments
1: ¥418.6
1,515In Stock
2,250Expected 7/30/2026

Mfr. Part #
UCC3802DTR

Mouser Part #
595-UCC3802DTR

Texas Instruments

Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3802D

Datasheet

1,515In Stock

2,250Expected 7/30/2026

Cut Tape

¥418.6

¥310.6

¥284

¥254.1

Reel

¥210.9

View

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

Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTCX/NOPB

LM2737MTC/NOPB
Texas Instruments
1: ¥455.1
1,092In Stock

Mfr. Part #
LM2737MTC/NOPB

Mouser Part #
926-LM2737MTC/NOPB

Texas Instruments

Switching Controllers 2.2-V to 16-V 2-MHz N-channel FET sync A A 926-LM2737MTCX/NOPB

Datasheet

1,092In Stock

¥455.1

¥338.8

¥280.7

¥265.8

View

Min.: 1
Mult.: 1

Buck

1 Output

2 MHz

90 %

600 mV to 5 V

20 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-14

Tube

Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3800D

UCC3800DTR
Texas Instruments
1: ¥418.6
1,482In Stock

Mfr. Part #
UCC3800DTR

Mouser Part #
595-UCC3800DTR

Texas Instruments

Switching Controllers Low-Power BiCMOS Cur rent-Mode PWM A 595 A 595-UCC3800D

Datasheet

1,482In Stock

Cut Tape

¥418.6

¥310.6

¥284

¥254.1

Reel

¥215.9

View

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

Switching Controllers Buck DC/DC Controller

R1224N102M-TR-FE
Nisshinbo
1: ¥255.8
3,093In Stock

Mfr. Part #
R1224N102M-TR-FE

Mouser Part #
848-R1224N102MTRFE

Nisshinbo

Switching Controllers Buck DC/DC Controller

Datasheet

3,093In Stock

Cut Tape

¥255.8

¥187.7

¥171.1

¥150.5

Reel

¥117.3

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

180 kHz

100 %

1 V to 18.5 V

- 40 C

+ 85 C

SMD/SMT

SOT-23-5

Reel, Cut Tape, MouseReel

Switching Controllers Digitally enhanced power analog buck controller

MCP19123T-E/MQ
Microchip Technology
1: ¥991.6
3,299In Stock

Mfr. Part #
MCP19123T-E/MQ

Mouser Part #
579-MCP19123T-E/MQ

Microchip Technology

Switching Controllers Digitally enhanced power analog buck controller

Learn More

Datasheet

3,299In Stock

Cut Tape

¥991.6

Reel

¥830.5

Min.: 1
Mult.: 1

: 3,300

Buck

1 Output

100 kHz to 1.6 MHz

100 %

300 mV to 16 V

4 A

- 40 C

+ 125 C

SMD/SMT

QFN-28

Reel, Cut Tape

Switching Controllers Fixed-Freq Notebook Sys Pwr Cntrlr A 595 A 595-TPS51222RTVR

TPS51222RTVT
Texas Instruments
1: ¥1,862
318In Stock

Mfr. Part #
TPS51222RTVT

Mouser Part #
595-TPS51222RTVT

Texas Instruments

Switching Controllers Fixed-Freq Notebook Sys Pwr Cntrlr A 595 A 595-TPS51222RTVR

Datasheet

318In Stock

Cut Tape

¥1,862

¥1,458.4

¥1,357

¥1,245.8

Reel

¥1,124.5

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

2 Output

200 kHz to 1 MHz

99 %

1 V to 12 V

20 A

- 40 C

+ 85 C

SMD/SMT

WQFN-32

Reel, Cut Tape, MouseReel

Switching Controllers 3-V to 20-V voltage mode synchronous bu A 926-LM27402SQX/NOPB

LM27402SQ/NOPB
Texas Instruments
1: ¥722.5
1,189In Stock

Mfr. Part #
LM27402SQ/NOPB

Mouser Part #
926-LM27402SQ/NOPB

Texas Instruments

Switching Controllers 3-V to 20-V voltage mode synchronous bu A 926-LM27402SQX/NOPB

Datasheet

1,189In Stock

Cut Tape

¥722.5

¥548.1

¥504.9

¥456.8

View

Reel

¥372.1

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

200 kHz to 1.2 MHz

95 %

600 mV to 18.6 V

30 A

- 40 C

+ 125 C

SMD/SMT

WQFN-16

Reel, Cut Tape, MouseReel

Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40193DRCT

TPS40193DRCR
Texas Instruments
1: ¥559.8
1,198In Stock

Mfr. Part #
TPS40193DRCR

Mouser Part #
595-TPS40193DRCR

Texas Instruments

Switching Controllers 4.5V-8V Input Synch Buck Contr A 595-TPS A 595-TPS40193DRCT

Datasheet

1,198In Stock

Cut Tape

¥559.8

¥421.9

¥387

¥348.8

View

Reel

¥289

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

300 kHz

85 %

591 mV to 14.4 V

20 A

- 40 C

+ 85 C

SMD/SMT

VSON-10

Reel, Cut Tape, MouseReel

Switching Controllers 3-28V In 20A Synch S tep Down Cntrlr A 5 A 595-TPS51218DSCT

TPS51218DSCR
Texas Instruments
1: ¥420.2
2,888In Stock

Mfr. Part #
TPS51218DSCR

Mouser Part #
595-TPS51218DSCR

Texas Instruments

Switching Controllers 3-28V In 20A Synch S tep Down Cntrlr A 5 A 595-TPS51218DSCT

Datasheet

2,888In Stock

Cut Tape

¥420.2

¥312.3

¥284

¥255.8

Reel

¥209.3

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

465 kHz

91 %

700 mV to 2.6 V

20 A

- 40 C

+ 85 C

SMD/SMT

WSON-10

Reel, Cut Tape, MouseReel

Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT

TPS51220RHBR
Texas Instruments
1: ¥581.4
2,251In Stock

Mfr. Part #
TPS51220RHBR

Mouser Part #
595-TPS51220RHBR

Texas Instruments

Switching Controllers Fixed Freq 99% Duty Cycle Peak Current A A 595-TPS51220RHBT

Datasheet

2,251In Stock

Cut Tape

¥581.4

¥544.8

¥500

¥451.8

View

Reel

¥388.7

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

2 Output

200 kHz to 1 MHz

99 %

1 V to 12 V

20 A

- 40 C

+ 85 C

SMD/SMT

VQFN-32

Reel, Cut Tape, MouseReel

Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVT

TPS64200DBVR
Texas Instruments
1: ¥290.7
2,830In Stock

Mfr. Part #
TPS64200DBVR

Mouser Part #
595-TPS64200DBVR

Texas Instruments

Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVT

Datasheet

2,830In Stock

Cut Tape

¥290.7

¥212.6

¥194.3

¥172.7

Reel

¥142.5

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

350 kHz

100 %

1.2 V to 6.5 V

3 A

- 40 C

+ 85 C

SMD/SMT

SOT-23-6

Reel, Cut Tape, MouseReel

Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQ/NOPB

LM5117PSQE/NOPB
Texas Instruments
1: ¥1,237.4
341In Stock

Mfr. Part #
LM5117PSQE/NOPB

Mouser Part #
595-LM5117PSQE/NOPB

Texas Instruments

Switching Controllers Wide Input Range Syn c Buck Cntlr A 595- A 595-LM5117PSQ/NOPB

Datasheet

341In Stock

Cut Tape

¥1,237.4

¥955.1

¥883.7

¥805.6

Reel

¥735.8

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

50 kHz to 750 kHz

98 %

800 mV to 62 V

20 A

- 40 C

+ 125 C

SMD/SMT

WQFN-24

Reel, Cut Tape, MouseReel

Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP

TPS40077PWPR
Texas Instruments
1: ¥686
2,400In Stock

Mfr. Part #
TPS40077PWPR

Mouser Part #
595-TPS40077PWPR

Texas Instruments

Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWP

Datasheet

2,400In Stock

Cut Tape

¥686

¥519.9

¥476.7

¥431.9

Reel

¥373.7

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Buck

1 Output

1 MHz

93 %

700 mV

20 A

- 40 C

+ 85 C

SMD/SMT

HTSSOP-16

Reel, Cut Tape, MouseReel

Switching Controllers 3V-20V Wide Inp Sync Buck Controller A 5 A 595-TPS40304ADRCT

TPS40304ADRCR
Texas Instruments
1: ¥202.6
2,963In Stock

Mfr. Part #
TPS40304ADRCR

Mouser Part #
595-TPS40304ADRCR

Texas Instruments

Switching Controllers 3V-20V Wide Inp Sync Buck Controller A 5 A 595-TPS40304ADRCT

Datasheet

2,963In Stock

Cut Tape

¥202.6

¥184.4

¥167.8

¥148.3

Reel

¥124.9

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

600 kHz

90 %

600 mV to 18 V

25 A

- 40 C

+ 145 C

SMD/SMT

VSON-10

Reel, Cut Tape, MouseReel

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK

UCC38C43DGKR
Texas Instruments
1: ¥252.5
4,015In Stock

Mfr. Part #
UCC38C43DGKR

Mouser Part #
595-UCC38C43DGKR

Texas Instruments

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43DGK

Learn More

Datasheet

4,015In Stock

Cut Tape

¥252.5

¥217.6

Reel

¥184.4

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

18 V

1 A

0 C

+ 70 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWP

TPS40061PWPR
Texas Instruments
1: ¥671
1,877In Stock

Mfr. Part #
TPS40061PWPR

Mouser Part #
595-TPS40061PWPR

Texas Instruments

Switching Controllers Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWP

Datasheet

1,877In Stock

Cut Tape

¥671

¥543.1

¥509.9

¥471.7

¥448.5

Reel

¥446.8

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Buck

1 Output

100 kHz to 1 MHz

98 %

700 mV to 45 V

10 A

- 40 C

+ 85 C

SMD/SMT

HTSSOP-16

Reel, Cut Tape, MouseReel

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40D

UCC38C40DR
Texas Instruments
1: ¥151.2
4,003In Stock

Mfr. Part #
UCC38C40DR

Mouser Part #
595-UCC38C40DR

Texas Instruments

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C40D

Learn More

Datasheet

4,003In Stock

Cut Tape

¥151.2

¥107.8

¥97.2

¥85.4

View

Reel

¥68.9

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

18 V

1 A

0 C

+ 70 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Two-Phase Sync SD Sw itching Cntlr A 926 A 926-LM2642MTC/NOPB

LM2642MTCX/NOPB
Texas Instruments
1: ¥677.7
2,193In Stock

Mfr. Part #
LM2642MTCX/NOPB

Mouser Part #
926-LM2642MTCX/NOPB

Texas Instruments

Switching Controllers Two-Phase Sync SD Sw itching Cntlr A 926 A 926-LM2642MTC/NOPB

Datasheet

2,193In Stock

Cut Tape

¥677.7

¥513.2

¥471.7

¥426.9

Reel

¥362.1

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck

2 Output

60 kHz

98 %

1.3 V to 30 V

6 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-28

Reel, Cut Tape, MouseReel

Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1

LM25141QRGETQ1
Texas Instruments
1: ¥1,313.9
2,966In Stock

Mfr. Part #
LM25141QRGETQ1

Mouser Part #
595-LM25141QRGETQ1

Texas Instruments

Switching Controllers 2.2MHz Low Iq Sync B uck Controller A 59 A 595-LM25141QRGERQ1

Learn More

Datasheet

2,966In Stock

Cut Tape

¥1,313.9

¥1,016.5

¥941.8

¥860.4

Reel

¥757.4

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

2.2 MHz

99 %

1.5 V to 15 V

20 A

- 40 C

+ 150 C

SMD/SMT

VQFN-24

AEC-Q100

Reel, Cut Tape, MouseReel

Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PW A 595 A 595-TPS40195PW

TPS40195PWR
Texas Instruments
1: ¥581.4
2,344In Stock

Mfr. Part #
TPS40195PWR

Mouser Part #
595-TPS40195PWR

Texas Instruments

Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PW A 595 A 595-TPS40195PW

Datasheet

2,344In Stock

Cut Tape

¥581.4

¥438.5

¥402

¥362.1

View

Reel

¥295.7

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Buck

1 Output

600 kHz

85 %

591 mV

20 A

- 40 C

+ 85 C

SMD/SMT

TSSOP-16

Reel, Cut Tape, MouseReel

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