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 Fixed-Freq Notebook Sys Pwr Controller A A 595-TPS51220ARTVR

TPS51220ARTVT
Texas Instruments
1: $6.76
157In Stock

Mfr. Part No.
TPS51220ARTVT

Mouser Part No
595-TPS51220ARTVT

Texas Instruments

Switching Controllers Fixed-Freq Notebook Sys Pwr Controller A A 595-TPS51220ARTVR

Datasheet

157In Stock

Cut Tape

$6.76

$5.15

$4.75

$4.31

Reel

$4.08

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 Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVR

TPS64200DBVT
Texas Instruments
1: $2.87
110In Stock

Mfr. Part No.
TPS64200DBVT

Mouser Part No
595-TPS64200DBVT

Texas Instruments

Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64200DBVR

Datasheet

110In Stock

Cut Tape

$2.87

$2.12

$1.93

$1.73

Reel

$1.54

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

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 Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVR

TPS64201DBVT
Texas Instruments
1: $2.80
238In Stock

Mfr. Part No.
TPS64201DBVT

Mouser Part No
595-TPS64201DBVT

Texas Instruments

Switching Controllers Adj Hi-Efficient Ste p-Dwn 20uA SOT-23 A A 595-TPS64201DBVR

Datasheet

238In Stock

Cut Tape

$2.80

$2.08

$1.89

$1.69

Reel

$1.58

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck

1 Output

450 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 High Speed PWM Contr oller A 595-UC3823D A 595-UC3823DWTR

UC3823DW
Texas Instruments
1: $10.77
121In Stock

Mfr. Part No.
UC3823DW

Mouser Part No
595-UC3823DW

Texas Instruments

Switching Controllers High Speed PWM Contr oller A 595-UC3823D A 595-UC3823DWTR

Datasheet

121In Stock

$10.77

$8.31

$7.70

$7.00

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

5.1 V

2 A

0 C

+ 70 C

SMD/SMT

SOIC-16

Tube

Switching Controllers High Speed PWM Contr oller ALT 595-UC382 ALT 595-UC3823DW

UC3823DWG4
Texas Instruments
1: $10.76
113In Stock

Mfr. Part No.
UC3823DWG4

Mouser Part No
595-UC3823DWG4

Texas Instruments

Switching Controllers High Speed PWM Contr oller ALT 595-UC382 ALT 595-UC3823DW

Datasheet

Product Comments

113In Stock

$10.76

$8.30

$7.68

$7.00

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

5.1 V

2 A

0 C

+ 70 C

SMD/SMT

SOIC-16

Tube

Switching Controllers High Speed PWM Contr oller

UC3823N
Texas Instruments
1: $11.48
153In Stock

Mfr. Part No.
UC3823N

Mouser Part No
595-UC3823N

Texas Instruments

Switching Controllers High Speed PWM Contr oller

Datasheet

153In Stock

$11.48

$8.89

$7.87

$7.26

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

1 MHz

100 %

5.1 V

2 A

0 C

+ 70 C

Through Hole

PDIP-16

Tube

Switching Controllers Current Mode

UC3842AD
Texas Instruments
1: $2.42
155In Stock

Mfr. Part No.
UC3842AD

Mouser Part No
595-UC3842AD

Texas Instruments

Switching Controllers Current Mode

Datasheet

155In Stock

$2.42

$1.77

$1.55

$1.41

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Tube

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD8

UC3842AD8TR
Texas Instruments
1: $1.32
2,066In Stock

Mfr. Part No.
UC3842AD8TR

Mouser Part No
595-UC3842AD8TR

Texas Instruments

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842AD8

Datasheet

2,066In Stock

Cut Tape

$1.32

$0.945

$0.853

$0.751

Reel

$0.622

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Current Mode ALT 595 -UC3842AD ALT 595-U ALT 595-UC3842AD

UC3842ADG4
Texas Instruments
1: $2.35
387In Stock

Mfr. Part No.
UC3842ADG4

Mouser Part No
595-UC3842ADG4

Texas Instruments

Switching Controllers Current Mode ALT 595 -UC3842AD ALT 595-U ALT 595-UC3842AD

Datasheet

Product Comments

387In Stock

$2.35

$1.77

$1.50

$1.39

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Tube

Switching Controllers Current Mode

UC3842D
Texas Instruments
1: $2.43
611In Stock

Mfr. Part No.
UC3842D

Mouser Part No
595-UC3842D

Texas Instruments

Switching Controllers Current Mode

Datasheet

611In Stock

$2.43

$1.84

$1.63

$1.51

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Tube

Switching Controllers Current Mode

UC3842D8
Texas Instruments
1: $2.68
451In Stock

Mfr. Part No.
UC3842D8

Mouser Part No
595-UC3842D8

Texas Instruments

Switching Controllers Current Mode

Datasheet

451In Stock

$2.68

$1.96

$1.44

$1.20

$1.19

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-8

Tube

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D8

UC3842D8TR
Texas Instruments
1: $2.05
600In Stock

Mfr. Part No.
UC3842D8TR

Mouser Part No
595-UC3842D8TR

Texas Instruments

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3842D8

Datasheet

600In Stock

Cut Tape

$2.05

$1.50

$1.36

$1.26

Reel

$1.26

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Current Mode

UC3842N
Texas Instruments
1: $2.96
342In Stock

Mfr. Part No.
UC3842N

Mouser Part No
595-UC3842N

Texas Instruments

Switching Controllers Current Mode

Datasheet

342In Stock

$2.96

$2.19

$1.92

$1.82

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

Through Hole

PDIP-8

Tube

Switching Controllers Current Mode

UC3843AD
Texas Instruments
1: $2.34
163In Stock
1,000Expected 27/8/2026

Mfr. Part No.
UC3843AD

Mouser Part No
595-UC3843AD

Texas Instruments

Switching Controllers Current Mode

Datasheet

163In Stock

1,000Expected 27/8/2026

$2.34

$1.73

$1.46

$1.39

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Tube

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AD

UC3843ADG4
Texas Instruments
1: $2.34
106In Stock

Mfr. Part No.
UC3843ADG4

Mouser Part No
595-UC3843ADG4

Texas Instruments

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AD

Datasheet

Product Comments

106In Stock

$2.34

$1.73

$1.46

$1.39

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Tube

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD

UC3843ADTR
Texas Instruments
1: $1.35
2,706In Stock

Mfr. Part No.
UC3843ADTR

Mouser Part No
595-UC3843ADTR

Texas Instruments

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843AD

Datasheet

2,706In Stock

Cut Tape

$1.35

$0.964

$0.869

$0.766

Reel

$0.626

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Reel, Cut Tape, MouseReel

Switching Controllers Current Mode

UC3843AN
Texas Instruments
1: $2.43
1,221In Stock

Mfr. Part No.
UC3843AN

Mouser Part No
595-UC3843AN

Texas Instruments

Switching Controllers Current Mode

Datasheet

1,221In Stock

$2.43

$1.80

$1.52

$1.43

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

Through Hole

PDIP-8

Tube

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AN

UC3843ANG4
Texas Instruments
1: $2.45
373In Stock

Mfr. Part No.
UC3843ANG4

Mouser Part No
595-UC3843ANG4

Texas Instruments

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843AN

Datasheet

Product Comments

373In Stock

$2.45

$1.85

$1.56

$1.44

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

Through Hole

PDIP-8

Tube

Switching Controllers Current Mode A 595-U C3843D8TR A 595-UC3 A 595-UC3843D8TR

UC3843D8
Texas Instruments
1: $2.62
120In Stock

Mfr. Part No.
UC3843D8

Mouser Part No
595-UC3843D8

Texas Instruments

Switching Controllers Current Mode A 595-U C3843D8TR A 595-UC3 A 595-UC3843D8TR

Datasheet

120In Stock

$2.62

$1.94

$1.60

$1.50

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-8

Tube

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843D8

UC3843D8TR
Texas Instruments
1: $1.37
2,071In Stock

Mfr. Part No.
UC3843D8TR

Mouser Part No
595-UC3843D8TR

Texas Instruments

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843D8

Datasheet

2,071In Stock

Cut Tape

$1.37

$0.957

$0.86

$0.751

Reel

$0.613

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-8

Reel, Cut Tape, MouseReel

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843D

UC3843DG4
Texas Instruments
1: $2.27
198In Stock

Mfr. Part No.
UC3843DG4

Mouser Part No
595-UC3843DG4

Texas Instruments

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843D

Datasheet

Product Comments

198In Stock

$2.27

$1.71

$1.44

$1.33

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Tube

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843D

UC3843DTR
Texas Instruments
1: $1.43
963In Stock

Mfr. Part No.
UC3843DTR

Mouser Part No
595-UC3843DTR

Texas Instruments

Switching Controllers Current-Mode PWM Con troller A 595-UC384 A 595-UC3843D

Datasheet

963In Stock

Cut Tape

$1.43

$1.03

$0.926

$0.816

Reel

$0.605

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

SMD/SMT

SOIC-14

Reel, Cut Tape, MouseReel

Switching Controllers Current Mode

UC3843N
Texas Instruments
1: $2.99
512In Stock

Mfr. Part No.
UC3843N

Mouser Part No
595-UC3843N

Texas Instruments

Switching Controllers Current Mode

Datasheet

512In Stock

$2.99

$2.20

$2.00

$1.78

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

Through Hole

PDIP-8

Tube

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843N

UC3843NG4
Texas Instruments
1: $3.01
497In Stock

Mfr. Part No.
UC3843NG4

Mouser Part No
595-UC3843NG4

Texas Instruments

Switching Controllers Current-Mode PWM Con troller ALT 595-UC3 ALT 595-UC3843N

Datasheet

Product Comments

497In Stock

$3.01

$2.28

$1.93

$1.78

View

Min.: 1
Mult.: 1

Boost, Buck, Flyback, Forward

1 Output

500 kHz

100 %

5 V

200 mA

0 C

+ 70 C

Through Hole

PDIP-8

Tube

Switching Controllers CVCC Flyback Cntlr w / Primary-Side Reg A 595-UCC28722DBVR

UCC28722DBVT
Texas Instruments
1: $1.60
453In Stock

Mfr. Part No.
UCC28722DBVT

Mouser Part No
595-UCC28722DBVT

Texas Instruments

Switching Controllers CVCC Flyback Cntlr w / Primary-Side Reg A 595-UCC28722DBVR

Datasheet

453In Stock

Cut Tape

$1.60

$1.16

$1.04

$0.923

Reel

$0.864

View

MouseReel Available

Min.: 1
Mult.: 1

: 250

Buck, Flyback

1 Output

650 Hz to 80 kHz

99 %

21 V

37 mA

- 40 C

+ 125 C

SMD/SMT

SOT-23-6

Reel, Cut Tape, MouseReel

Buck Converters for Power Over Ethernet

Customer Service Office

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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