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 High Speed Vltg Mode

UCC35705DGK
Texas Instruments
1: $4.73
2In Stock

Mfr. Part No.
UCC35705DGK

Mouser Part No
595-UCC35705DGK

Texas Instruments

Switching Controllers High Speed Vltg Mode

Datasheet

2In Stock

$4.73

$3.54

$3.03

$2.86

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

4 MHz

93 %

8.8 V

20 mA

0 C

+ 70 C

SMD/SMT

VSSOP-8

Tube

Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-0

UCC3813DTR-0
Texas Instruments
1: $2.46
551In Stock

Mfr. Part No.
UCC3813DTR-0

Mouser Part No
595-UCC3813DTR-0

Texas Instruments

Switching Controllers Low Power Economy Bi CMOS Current Mode A A 595-UCC3813D-0

Datasheet

551In Stock

Cut Tape

$2.46

$1.85

$1.70

$1.59

View

Reel

$1.25

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

7.2 V

1 A

0 C

+ 70 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers LP BiCMOS C Mode

UCC3813PW-2
Texas Instruments
1: $5.15
353In Stock

Mfr. Part No.
UCC3813PW-2

Mouser Part No
595-UCC3813PW-2

Texas Instruments

Switching Controllers LP BiCMOS C Mode

Datasheet

353In Stock

$5.15

$3.84

$3.51

$3.14

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

12.5 V

1 A

0 C

+ 70 C

SMD/SMT

TSSOP-8

Tube

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C42D

UCC38C42DR
Texas Instruments
1: $1.43
2,808In Stock

Mfr. Part No.
UCC38C42DR

Mouser Part No
595-UCC38C42DR

Texas Instruments

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C42D

Learn More

Datasheet

2,808In Stock

Cut Tape

$1.43

$1.03

$0.933

$0.823

Reel

$0.683

View

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 BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43D

UCC38C43DR
Texas Instruments
1: $1.43
1,844In Stock

Mfr. Part No.
UCC38C43DR

Mouser Part No
595-UCC38C43DR

Texas Instruments

Switching Controllers BiCMOS Low-Power Cur rent Mode A 595-UCC A 595-UCC38C43D

Learn More

Datasheet

1,844In Stock

Cut Tape

$1.43

$1.03

$0.962

Reel

$0.658

$0.643

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 Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

RT8230AGQW
Richtek
1: $1.22
1,500In Stock

Mfr. Part No.
RT8230AGQW

Mouser Part No
835-RT8230AGQW

Richtek

Switching Controllers Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

Datasheet

1,500In Stock

Cut Tape

$1.22

$0.879

$0.792

$0.696

Reel

$0.566

View

Min.: 1
Mult.: 1

: 1,500

Buck

2 Output

240 kHz to 430 kHz

96 %

Adjustable

100 mA

- 40 C

+ 85 C

SMD/SMT

WQFN-24

Reel, Cut Tape

Switching Controllers Two-Phase Sync SD Sw itching Cntlr

LM2642MTC/NOPB
Texas Instruments
1: $7.13
378In Stock

Mfr. Part No.
LM2642MTC/NOPB

Mouser Part No
926-LM2642MTC/NOPB

Texas Instruments

Switching Controllers Two-Phase Sync SD Sw itching Cntlr

Datasheet

378In Stock

$7.13

$5.44

$4.72

$4.35

View

Min.: 1
Mult.: 1
Max.: 1,001

Buck

2 Output

300 kHz

98 %

1.3 V to 30 V

20 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-28

Tube

Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTCX/NOPB

LM2745MTC/NOPB
Texas Instruments
1: $4.90
40In Stock
564Expected 10/9/2026

Mfr. Part No.
LM2745MTC/NOPB

Mouser Part No
926-LM2745MTC/NOPB

Texas Instruments

Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2745MTCX/NOPB

Datasheet

40In Stock

564Expected 10/9/2026

$4.90

$3.69

$3.07

$2.92

View

Min.: 1
Mult.: 1

Buck

1 Output

50 kHz to 1 MHz

86 %

600 mV to 13.5 V

20 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-14

Tube

Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2748MTCX/NOPB

LM2748MTC/NOPB
Texas Instruments
1: $5.07
146In Stock

Mfr. Part No.
LM2748MTC/NOPB

Mouser Part No
926-LM2748MTC/NOPB

Texas Instruments

Switching Controllers 1-V to 14-V voltage mode synchronous bu A 926-LM2748MTCX/NOPB

Datasheet

146In Stock

$5.07

$3.78

$3.45

$3.09

View

Min.: 1
Mult.: 1

Buck

1 Output

50 kHz to 1 MHz

86 %

600 mV to 13.5 V

20 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-14

Tube

Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3151MH33NOPB

LM3151MHE-3.3/NOPB
Texas Instruments
1: $7.11
48In Stock

Mfr. Part No.
LM3151MHE-3.3/NOPB

Mouser Part No
926-LM3151MHE33NOPB

Texas Instruments

Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3151MH33NOPB

Learn More

Datasheet

48In Stock

Cut Tape

$7.11

$5.39

$4.95

$4.49

Reel

$4.24

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

250 kHz

90 %

3.3 V

12 A

- 40 C

+ 125 C

SMD/SMT

HTSSOP-14

Reel, Cut Tape, MouseReel

Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3152MH33NOPB

LM3152MHE-3.3/NOPB
Texas Instruments
1: $7.11
7In Stock

Mfr. Part No.
LM3152MHE-3.3/NOPB

Mouser Part No
926-LM3152MHE33NOPB

Texas Instruments

Switching Controllers 42V Synchronous Step -Down Controller wi A 926-LM3152MH33NOPB

Learn More

Datasheet

7In Stock

Cut Tape

$7.11

$5.39

$4.95

$4.49

Reel

$4.24

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

500 kHz

81 %

3.3 V

12 A

- 40 C

+ 125 C

SMD/SMT

HTSSOP-14

Reel, Cut Tape, MouseReel

Switching Controllers Miniature Adjustabl e Step-Down DC-DC C

LM3203TL/NOPB
Texas Instruments
1: $2.19
266In Stock

Mfr. Part No.
LM3203TL/NOPB

Mouser Part No
926-LM3203TL/NOPB

Texas Instruments

Switching Controllers Miniature Adjustabl e Step-Down DC-DC C

Datasheet

266In Stock

Cut Tape

$2.19

$1.60

$1.46

$1.29

Reel

$1.21

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

2 MHz

96 %

800 mV to 3.6 V

500 mA

- 30 C

+ 85 C

SMD/SMT

uSMD

Reel, Cut Tape, MouseReel

Switching Controllers Secondary Side Switc hing Reg A 926-LM51 A 926-LM5115MTCX/NOPB

LM5115MTC/NOPB
Texas Instruments
1: $7.51
134In Stock

Mfr. Part No.
LM5115MTC/NOPB

Mouser Part No
926-LM5115MTC/NOPB

Texas Instruments

Switching Controllers Secondary Side Switc hing Reg A 926-LM51 A 926-LM5115MTCX/NOPB

Datasheet

134In Stock

$7.51

$5.86

$5.26

$5.00

View

Min.: 1
Mult.: 1

Buck

1 Output

1 MHz

85 %

750 mV to 13.5 V

2.5 A

- 40 C

+ 125 C

SMD/SMT

TSSOP-16

Tube

Switching Controllers High Efficiency Synchronous Buck Controller

MIC2182-3.3YM
Microchip Technology
1: $6.30
96In Stock

Mfr. Part No.
MIC2182-3.3YM

Mouser Part No
998-MIC2182-3.3YM

Microchip Technology

Switching Controllers High Efficiency Synchronous Buck Controller

Datasheet

96In Stock

$6.30

Min.: 1
Mult.: 1

Buck

5 Output

330 kHz

86 %

3.3 V

20 A

- 40 C

+ 85 C

SMD/SMT

SOP-16

Tube

Switching Controllers High Efficiency Synchronous Buck Controller

MIC2182-5.0YM
Microchip Technology
1: $6.30
66In Stock

Mfr. Part No.
MIC2182-5.0YM

Mouser Part No
998-MIC2182-5.0YM

Microchip Technology

Switching Controllers High Efficiency Synchronous Buck Controller

Datasheet

66In Stock

$6.30

Min.: 1
Mult.: 1

Buck

5 Output

330 kHz

86 %

5 V

20 A

- 40 C

+ 85 C

SMD/SMT

SOP-16

Tube

Switching Controllers High Efficiency Synchronous Buck Controller

MIC2182YM
Microchip Technology
1: $6.30
53In Stock
96Expected 8/10/2026

Mfr. Part No.
MIC2182YM

Mouser Part No
998-MIC2182YM

Microchip Technology

Switching Controllers High Efficiency Synchronous Buck Controller

Datasheet

53In Stock

96Expected 8/10/2026

$6.30

Min.: 1
Mult.: 1

Buck

1 Output

300 kHz

86 %

1.25 V to 6 V

20 A

- 40 C

+ 85 C

SMD/SMT

SOP-16

Tube

Switching Controllers Monolithic SMPS Controller

MIC38C42YM
Microchip Technology
1: $3.35
120In Stock

Mfr. Part No.
MIC38C42YM

Mouser Part No
998-MIC38C42YM

Microchip Technology

Switching Controllers Monolithic SMPS Controller

Datasheet

120In Stock

$3.35

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

Switching Controllers Monolithic SMPS Controller

MIC38C43YMM
Microchip Technology
1: $2.67
137In Stock

Mfr. Part No.
MIC38C43YMM

Mouser Part No
998-MIC38C43YMM

Microchip Technology

Switching Controllers Monolithic SMPS Controller

Datasheet

137In Stock

$2.67

$2.65

$2.61

$2.35

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

96 %

5 V

500 mA

- 40 C

+ 85 C

SMD/SMT

MSOP-8

Tube

Switching Controllers Monolithic SMPS Controller

MIC38HC42YM
Microchip Technology
1: $2.22
475In Stock

Mfr. Part No.
MIC38HC42YM

Mouser Part No
998-MIC38HC42YM

Microchip Technology

Switching Controllers Monolithic SMPS Controller

Datasheet

475In Stock

$2.22

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

96 %

5 V

1 A

- 40 C

+ 85 C

SMD/SMT

SOIC-8

Tube

Switching Controllers 60V Low IQ Buck Ctlr

LTC3372IUK#PBF
Analog Devices
1: $25.76
35In Stock

Mfr. Part No.
LTC3372IUK#PBF

Mouser Part No
584-3372IUKPB

Analog Devices

Switching Controllers 60V Low IQ Buck Ctlr

Learn More

Datasheet

35In Stock

$25.76

$20.51

$18.36

$17.31

View

Min.: 1
Mult.: 1

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 150V L IQ, Sync Buck DC/DC Cntr

LTC7801EUFD#TRPBF
Analog Devices
1: $17.88
141In Stock
2,500Expected 12/9/2026

Mfr. Part No.
LTC7801EUFD#TRPBF

Mouser Part No
584-7801EUFDTRPBF

Analog Devices

Switching Controllers 150V L IQ, Sync Buck DC/DC Cntr

Datasheet

141In Stock

2,500Expected 12/9/2026

Cut Tape

$17.88

$14.08

$13.11

$12.06

View

Reel

$10.74

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Buck

1 Output

50 kHz to 900 kHz

100 %

800 mV to 60 V

10 A

- 40 C

+ 125 C

SMD/SMT

QFN-24

Reel, Cut Tape, MouseReel

Switching Controllers 40V, Low Iq Dual Phse Sych Stp-Dwn Cntlr

LTC7802IUFDM#WPBF
Analog Devices
1: $10.57
20In Stock

Mfr. Part No.
LTC7802IUFDM#WPBF

Mouser Part No
584-7802IUFDM#WPBF

Analog Devices

Switching Controllers 40V, Low Iq Dual Phse Sych Stp-Dwn Cntlr

Learn More

Datasheet

20In Stock

$10.57

$8.17

$7.04

$6.76

View

Min.: 1
Mult.: 1

Buck

1 Output

100 kHz to 3 MHz

99 %

800 mV to 40 V

5 A

- 40 C

+ 125 C

SMD/SMT

AEC-Q100

Tube

Switching Controllers 40V, Low Iq Dual Phse Sych Stp-Dwn Cntlr

LTC7802JUFDM#WPBF
Analog Devices
1: $11.36
13In Stock
365On Order

Mfr. Part No.
LTC7802JUFDM#WPBF

Mouser Part No
584-7802JUFDM#WPBF

Analog Devices

Switching Controllers 40V, Low Iq Dual Phse Sych Stp-Dwn Cntlr

Learn More

Datasheet

13In Stock

365On Order

$11.36

$8.80

$7.60

$7.30

View

Min.: 1
Mult.: 1

Buck

1 Output

100 kHz to 3 MHz

99 %

800 mV to 40 V

5 A

- 40 C

+ 150 C

SMD/SMT

AEC-Q100

Tube

Switching Controllers 03-5 Amp non synchronous buck controller

ADP1864AUJZ-R7
Analog Devices
1: $5.51
155In Stock
3,000Expected 9/9/2026

Mfr. Part No.
ADP1864AUJZ-R7

Mouser Part No
584-ADP1864AUJZ-R7

Analog Devices

Switching Controllers 03-5 Amp non synchronous buck controller

Datasheet

155In Stock

3,000Expected 9/9/2026

Cut Tape

$5.51

$4.18

$3.84

$3.47

View

Reel

$3.05

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Buck

1 Output

580 kHz

100 %

800 mV to 14 V

5 A

- 40 C

+ 125 C

SMD/SMT

TSOT-6

Reel, Cut Tape, MouseReel

Switching Controllers 600kHz, Light Load Eff Enabled

ADP1870ARMZ-0.6-R7
Analog Devices
1: $5.17
5In Stock

Mfr. Part No.
ADP1870ARMZ-0.6-R7

Mouser Part No
584-ADP1870ARMZ0.6R7

Analog Devices

Switching Controllers 600kHz, Light Load Eff Enabled

Datasheet

5In Stock

Cut Tape

$5.17

$3.90

$3.59

$3.24

Reel

$2.82

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

Buck

1 Output

300 kHz, 600 kHz, 1 MHz

84 %

600 mV

25 A

- 40 C

+ 125 C

SMD/SMT

MSOP-10

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