Switching Controllers – Mouser Singapore

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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 HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3485MMX/NOPB

LM3485MM/NOPB
Texas Instruments
1: $2.99
10,057In Stock

Mfr. Part No.
LM3485MM/NOPB

Mouser Part No
926-LM3485MM/NOPB

Texas Instruments

Switching Controllers HYSTERETIC PFET BUCK CONTROLLER A 926-LM A 926-LM3485MMX/NOPB

Datasheet

10,057In Stock

Cut Tape

$2.99

$2.22

$2.03

$1.81

Reel

$1.58

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

50 kHz to 1 MHz

100 %

1.242 V to 35 V

4 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers Hysteretic PFET Buck Cntlr w/ Enable Pin A 926-LM3489MM/NOPB

LM3489MMX/NOPB
Texas Instruments
1: $2.24
8,748In Stock

Mfr. Part No.
LM3489MMX/NOPB

Mouser Part No
926-LM3489MMX/NOPB

Texas Instruments

Switching Controllers Hysteretic PFET Buck Cntlr w/ Enable Pin A 926-LM3489MM/NOPB

Datasheet

8,748In Stock

Cut Tape

$2.24

$1.65

$1.50

$1.33

Reel

$1.11

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

Buck

1 Output

1 MHz to 1.4 MHz

100 %

1.239 V to 35 V

4 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers Automotive Grade 4.5 -35V Hysteretic Non A 926-LM3489QMM/NOPB

LM3489QMMX/NOPB
Texas Instruments
1: $2.83
2,803In Stock

Mfr. Part No.
LM3489QMMX/NOPB

Mouser Part No
926-LM3489QMMX/NOPB

Texas Instruments

Switching Controllers Automotive Grade 4.5 -35V Hysteretic Non A 926-LM3489QMM/NOPB

Datasheet

2,803In Stock

Cut Tape

$2.83

$2.09

$1.90

$1.70

Reel

$1.47

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

Buck

1 Output

1 MHz to 1.4 MHz

100 %

1.239 V to 35 V

4 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

AEC-Q100

Reel, Cut Tape, MouseReel

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MME/NOPB

LM5085MM/NOPB
Texas Instruments
1: $4.68
6,532In Stock

Mfr. Part No.
LM5085MM/NOPB

Mouser Part No
926-LM5085MM/NOPB

Texas Instruments

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MME/NOPB

Datasheet

6,532In Stock

Cut Tape

$4.68

$3.50

$3.21

$2.88

Reel

$2.53

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

1 MHz

100 %

1.25 V to 75 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers 75V On-Time PFET Buc k Switching Cntlr A A 926-LM5085MM/NOPB

LM5085MME/NOPB
Texas Instruments
1: $4.50
1,154In Stock

Mfr. Part No.
LM5085MME/NOPB

Mouser Part No
926-LM5085MME/NOPB

Texas Instruments

Switching Controllers 75V On-Time PFET Buc k Switching Cntlr A A 926-LM5085MM/NOPB

Datasheet

1,154In Stock

Cut Tape

$4.50

$3.37

$3.10

$2.79

Reel

$2.62

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

1 MHz

100 %

1.25 V to 75 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MME/NOPB

LM5085MMX/NOPB
Texas Instruments
1: $3.82
2,760In Stock

Mfr. Part No.
LM5085MMX/NOPB

Mouser Part No
926-LM5085MMX/NOPB

Texas Instruments

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MME/NOPB

Datasheet

2,760In Stock

Cut Tape

$3.82

$2.86

$2.61

$2.35

Reel

$1.99

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

Buck

1 Output

1 MHz

100 %

1.25 V to 75 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

VSSOP-8

Reel, Cut Tape, MouseReel

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MYE/NOPB

LM5085MYX/NOPB
Texas Instruments
1: $3.94
3,084In Stock
10,500Expected 21/12/2026

Mfr. Part No.
LM5085MYX/NOPB

Mouser Part No
926-LM5085MYX/NOPB

Texas Instruments

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085MYE/NOPB

Datasheet

3,084In Stock

10,500Expected 21/12/2026

Cut Tape

$3.94

$2.94

$2.69

$2.41

Reel

$2.05

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

Buck

1 Output

1 MHz

100 %

1.25 V to 75 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

MSOP-PowerPad-8

Reel, Cut Tape, MouseReel

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085SDE/NOPB

LM5085SD/NOPB
Texas Instruments
1: $4.50
2,481In Stock

Mfr. Part No.
LM5085SD/NOPB

Mouser Part No
926-LM5085SD/NOPB

Texas Instruments

Switching Controllers 4.5-75V Wide Vin Co nstant On-Time Non-S A 926-LM5085SDE/NOPB

Datasheet

2,481In Stock

Cut Tape

$4.50

$3.37

$3.10

$2.79

Reel

$2.46

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

1 MHz

100 %

1.25 V to 75 V

1.75 A

- 40 C

+ 125 C

SMD/SMT

LLP-8

Reel, Cut Tape, MouseReel

Switching Controllers Commercial 30-V lo w -power current-mode

UCC38C50DR
Texas Instruments
1: $1.59
1,425In Stock

Mfr. Part No.
UCC38C50DR

Mouser Part No
595-UCC38C50DR

Texas Instruments

Switching Controllers Commercial 30-V lo w -power current-mode

Learn More

Datasheet

1,425In Stock

Cut Tape

$1.59

$1.14

$1.02

$0.902

Reel

$0.741

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck, Flyback

1 Output

110 kHz

100 %

200 mA

0 C

+ 85 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Commercial 30-V lo w -power current-mode

UCC38C52DR
Texas Instruments
1: $1.55
2,470In Stock

Mfr. Part No.
UCC38C52DR

Mouser Part No
595-UCC38C52DR

Texas Instruments

Switching Controllers Commercial 30-V lo w -power current-mode

Learn More

Datasheet

2,470In Stock

Cut Tape

$1.55

$1.12

$1.01

$0.889

Reel

$0.729

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck, Flyback

1 Output

110 kHz

100 %

200 mA

0 C

+ 85 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Synchronous Buck PWM Control 600kHz 12ns

MCP19035-BAAAE/MF
Microchip Technology
1: $2.83
431In Stock

Mfr. Part No.
MCP19035-BAAAE/MF

Mouser Part No
579-MCP19035BAAAE/MF

Microchip Technology

Switching Controllers Synchronous Buck PWM Control 600kHz 12ns

Learn More

Datasheet

431In Stock

$2.83

Min.: 1
Mult.: 1

Buck

1 Output

600 kHz

85 %

5 V

50 mA

- 40 C

+ 125 C

SMD/SMT

DFN-10

AEC-Q100

Tube

Switching Controllers Synchronous Buck PWM Control 600kHz 12ns

MCP19035-BAABE/MF
Microchip Technology
1: $2.83
182In Stock

Mfr. Part No.
MCP19035-BAABE/MF

Mouser Part No
579-MCP19035BAABE/MF

Microchip Technology

Switching Controllers Synchronous Buck PWM Control 600kHz 12ns

Learn More

Datasheet

182In Stock

$2.83

Min.: 1
Mult.: 1

Buck

1 Output

600 kHz

85 %

5 V

50 mA

- 40 C

+ 125 C

SMD/SMT

DFN-10

AEC-Q100

Tube

Switching Controllers Sync Buck PWM Controller

MCP19111-E/MQ
Microchip Technology
1: $7.10
25In Stock

Mfr. Part No.
MCP19111-E/MQ

Mouser Part No
579-MCP19111-E/MQ

Microchip Technology

Switching Controllers Sync Buck PWM Controller

Learn More

Datasheet

25In Stock

$7.10

Min.: 1
Mult.: 1

Boost, Buck

1 Output

100 kHz

100 %

500 mV to 3.6 V

30 mA

- 40 C

+ 125 C

SMD/SMT

QFN-28

Tube

Switching Controllers 3.5-V to 65-V low Iq dual 2-phase sync

LM5143QRWGRQ1
Texas Instruments
1: $21.91
14In Stock
5,000Expected 5/11/2026

Mfr. Part No.
LM5143QRWGRQ1

Mouser Part No
595-LM5143QRWGRQ1

Texas Instruments

Switching Controllers 3.5-V to 65-V low Iq dual 2-phase sync

Learn More

Datasheet

14In Stock

5,000Expected 5/11/2026

Cut Tape

$21.91

$17.35

$16.21

$15.11

View

Reel

$13.48

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck

2 Output

100 kHz to 2.2 MHz

99 %

600 mV to 55 V

100 A

- 40 C

+ 150 C

SMD/SMT

VQFNP-40

AEC-Q100

Reel, Cut Tape, MouseReel

Switching Controllers Low Vin Synch Buck D C/DC Controller A 5 A 595-TPS40041DRBT

TPS40041DRBR
Texas Instruments
1: $2.80
19In Stock

Mfr. Part No.
TPS40041DRBR

Mouser Part No
595-TPS40041DRBR

Texas Instruments

Switching Controllers Low Vin Synch Buck D C/DC Controller A 5 A 595-TPS40041DRBT

Datasheet

19In Stock

Cut Tape

$2.80

$2.07

$1.88

$1.67

Reel

$1.35

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

600 kHz

88 %

600 mV to 4.95 V

15 A

- 40 C

+ 85 C

SMD/SMT

SON-8

Reel, Cut Tape, MouseReel

Switching Controllers Lo Vin Synch Buck DC /DC Cntrlr A 595-TP A 595-TPS40041DRBR

TPS40041DRBT
Texas Instruments
1: $3.20
453In Stock

Mfr. Part No.
TPS40041DRBT

Mouser Part No
595-TPS40041DRBT

Texas Instruments

Switching Controllers Lo Vin Synch Buck DC /DC Cntrlr A 595-TP A 595-TPS40041DRBR

Datasheet

453In Stock

Cut Tape

$3.20

$2.38

$2.16

$2.04

Reel

$1.75

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

600 kHz

88 %

600 mV to 4.95 V

15 A

- 40 C

+ 85 C

SMD/SMT

SON-8

Reel, Cut Tape, MouseReel

Switching Controllers Lo Vin Synch Buck DC /DC Cntrlr ALT 595- ALT 595-TPS40041DRBT

TPS40041DRBTG4
Texas Instruments
1: $3.21
225In Stock

Mfr. Part No.
TPS40041DRBTG4

Mouser Part No
595-TPS40041DRBTG4

Texas Instruments

Switching Controllers Lo Vin Synch Buck DC /DC Cntrlr ALT 595- ALT 595-TPS40041DRBT

Datasheet

Product Comments

225In Stock

Cut Tape

$3.21

$2.37

$2.16

$1.93

Reel

$1.82

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

600 kHz

88 %

600 mV to 4.95 V

15 A

- 40 C

+ 85 C

SMD/SMT

SON-8

Reel, Cut Tape, MouseReel

Switching Controllers Low Pin Ct Low Vin S ynch Buck DCDC A 59 A 595-TPS40042DRCR

TPS40042DRCT
Texas Instruments
1: $4.09
30In Stock

Mfr. Part No.
TPS40042DRCT

Mouser Part No
595-TPS40042DRCT

Texas Instruments

Switching Controllers Low Pin Ct Low Vin S ynch Buck DCDC A 59 A 595-TPS40042DRCR

Datasheet

30In Stock

Cut Tape

$4.09

$3.06

$2.80

$2.52

Reel

$2.37

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

600 kHz

95 %

600 mV

- 40 C

+ 85 C

SMD/SMT

VSON-10

Reel, Cut Tape, MouseReel

Switching Controllers Wide Input Synch Buc k Controller A 595- A 595-TPS40060PWPR

TPS40060PWP
Texas Instruments
1: $9.22
268In Stock

Mfr. Part No.
TPS40060PWP

Mouser Part No
595-TPS40060PWP

Texas Instruments

Switching Controllers Wide Input Synch Buc k Controller A 595- A 595-TPS40060PWPR

Datasheet

268In Stock

$9.22

$7.28

$6.51

$6.26

View

Min.: 1
Mult.: 1

Buck

1 Output

100 kHz to 1 MHz

98 %

700 mV to 45 V

10 A

- 40 C

+ 85 C

SMD/SMT

HTSSOP-16

Tube

Switching Controllers Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWPR

TPS40061PWP
Texas Instruments
1: $8.53
107In Stock

Mfr. Part No.
TPS40061PWP

Mouser Part No
595-TPS40061PWP

Texas Instruments

Switching Controllers Wide Input Sync Buck Cntrlr source/sink A 595-TPS40061PWPR

Datasheet

107In Stock

$8.53

$6.54

$5.97

$5.70

View

Min.: 1
Mult.: 1

Buck

1 Output

100 kHz to 1 MHz

98 %

700 mV to 45 V

10 A

- 40 C

+ 85 C

SMD/SMT

HTSSOP-16

Tube

Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR

TPS40077PWP
Texas Instruments
1: $6.61
379In Stock

Mfr. Part No.
TPS40077PWP

Mouser Part No
595-TPS40077PWP

Texas Instruments

Switching Controllers Synchronous Buck Con troller A 595-TPS40 A 595-TPS40077PWPR

Datasheet

379In Stock

$6.61

$5.03

$4.23

$4.05

View

Min.: 1
Mult.: 1

Buck

1 Output

1 MHz

93 %

700 mV

20 A

- 40 C

+ 85 C

SMD/SMT

HTSSOP-16

Tube

Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PWR A 59 A 595-TPS40195PWR

TPS40195PW
Texas Instruments
1: $6.13
102In Stock

Mfr. Part No.
TPS40195PW

Mouser Part No
595-TPS40195PW

Texas Instruments

Switching Controllers 4.5V to 20V Buck A 5 95-TPS40195PWR A 59 A 595-TPS40195PWR

Datasheet

102In Stock

$6.13

$4.62

$4.24

$3.84

View

Min.: 1
Mult.: 1

Buck

1 Output

600 kHz

85 %

591 mV

20 A

- 40 C

+ 85 C

SMD/SMT

TSSOP-16

Tube

Switching Controllers Wide Inp Non-Synch B uck DC/DC Cntrlr A A 595-TPS40200DRBR

TPS40200DRBT
Texas Instruments
1: $3.93
153In Stock

Mfr. Part No.
TPS40200DRBT

Mouser Part No
595-TPS40200DRBT

Texas Instruments

Switching Controllers Wide Inp Non-Synch B uck DC/DC Cntrlr A A 595-TPS40200DRBR

Datasheet

153In Stock

Cut Tape

$3.93

$2.94

$2.69

$2.42

Reel

$2.27

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

35 kHz to 500 kHz

95 %

700 mV to 46 V

3 A

- 40 C

+ 85 C

SMD/SMT

SON-8

Reel, Cut Tape, MouseReel

Switching Controllers Dual DDR selectable Sync buck Controller A 595-TPS51020DBTR

TPS51020DBT
Texas Instruments
1: $10.23
19In Stock

Mfr. Part No.
TPS51020DBT

Mouser Part No
595-TPS51020DBT

Texas Instruments

Switching Controllers Dual DDR selectable Sync buck Controller A 595-TPS51020DBTR

Datasheet

19In Stock

$10.23

$7.33

$6.64

$6.62

View

Min.: 1
Mult.: 1

Buck

2 Output

450 kHz

88 %

900 mV

15 A

- 40 C

+ 85 C

SMD/SMT

TSSOP-30

Tube

Switching Controllers Dual Output 2Phase S ynch Buck Cntrlr A A 595-TPS5120DBTR

TPS5120DBT
Texas Instruments
1: $16.77
144In Stock

Mfr. Part No.
TPS5120DBT

Mouser Part No
595-TPS5120DBT

Texas Instruments

Switching Controllers Dual Output 2Phase S ynch Buck Cntrlr A A 595-TPS5120DBTR

Datasheet

144In Stock

$16.77

$13.18

$11.60

$11.17

View

Min.: 1
Mult.: 1

Buck

2 Output

100 kHz to 500 kHz

83 %

900 mV to 26 V

20 A

- 40 C

+ 85 C

SMD/SMT

TSSOP-30

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