Voltage Regulators - Switching Regulators

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SC189 Step Down Regulators

Semtech SC189 Step Down Regulators deliver up to 1.5A output current in either an ultra-small 2mm x 2mm, low profile package, or a low-cost SOT23-5 package. With only three external filter components, the SC189 is a complete step-down regulator solution. The SC189 Regulators feature an input voltage range of 2.9V to 5.5V with either factory-programmed outputs from 1.0V to 3.3V or adjustable output via an external resistor divider.

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Part #

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189CULTRT
Semtech
1: $1.57
32,584In Stock

Mfr. Part No.
SC189CULTRT

Mouser Part No
947-SC189CULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

32,584In Stock

Cut Tape

$1.57

$1.18

$1.01

$0.935

Reel

$0.753

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

MLPD-UT-6

Buck

1.2 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189LULTRT
Semtech
1: $1.64
2,905In Stock

Mfr. Part No.
SC189LULTRT

Mouser Part No
947-SC189LULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

2,905In Stock

Cut Tape

$1.64

$1.17

$1.05

$0.923

Reel

$0.757

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

MLPD-UT-6

Buck

1.8 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189BULTRT
Semtech
1: $1.78
2,733In Stock

Mfr. Part No.
SC189BULTRT

Mouser Part No
947-SC189BULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

2,733In Stock

Cut Tape

$1.78

$1.28

$1.15

$1.01

Reel

$0.834

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

MLPD-UT-6

Buck

1.1 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

SC189ASKTRT
Semtech
1: $1.64
7,300In Stock

Mfr. Part No.
SC189ASKTRT

Mouser Part No
947-SC189ASKTRT

Semtech

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

Learn More

Datasheet

7,300In Stock

Cut Tape

$1.64

$1.17

$1.06

$0.928

Reel

$0.761

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

1 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG

SC189HSKTRT
Semtech
1: $1.80
3,792In Stock

Mfr. Part No.
SC189HSKTRT

Mouser Part No
947-SC189HSKTRT

Semtech

Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG

Learn More

Datasheet

3,792In Stock

Cut Tape

$1.80

$1.29

$1.16

$1.02

Reel

$0.843

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

1.5 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

SC189LSKTRT
Semtech
1: $1.77
4,209In Stock

Mfr. Part No.
SC189LSKTRT

Mouser Part No
947-SC189LSKTRT

Semtech

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

Learn More

Datasheet

4,209In Stock

Cut Tape

$1.77

$1.27

$1.15

$1.01

Reel

$0.848

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

1.8 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

SC189ZSKTRT
Semtech
1: $1.80
731In Stock
9,000Expected 21/08/2026

Mfr. Part No.
SC189ZSKTRT

Mouser Part No
947-SC189ZSKTRT

Semtech

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

Learn More

Datasheet

731In Stock

9,000Expected 21/08/2026

Cut Tape

$1.80

$1.32

$1.16

$1.05

Reel

$0.846

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

3.3 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189AULTRT
Semtech
1: $1.77
257In Stock

Mfr. Part No.
SC189AULTRT

Mouser Part No
947-SC189AULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

257In Stock

Cut Tape

$1.77

$1.27

$1.15

$1.01

Reel

$0.83

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

MLPD-UT-6

Buck

1 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

SC189YSKTRT
Semtech
1: $1.75
1,159In Stock

Mfr. Part No.
SC189YSKTRT

Mouser Part No
947-SC189YSKTRT

Semtech

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

Learn More

Datasheet

1,159In Stock

Cut Tape

$1.75

$1.26

$1.13

$0.999

Reel

$0.808

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

2.5 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

SC189CSKTRT
Semtech
1: $1.69
11,903Expected 19/08/2026

Mfr. Part No.
SC189CSKTRT

Mouser Part No
947-SC189CSKTRT

Semtech

Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG

Learn More

Datasheet

11,903Expected 19/08/2026

Cut Tape

$1.69

$1.25

$1.10

$0.988

Reel

$0.814

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

1.2 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators 2.5MHZ-1.5A SYNC STEP DOWN REG

SC189BSKTRT
Semtech
1: $1.80
2,995Expected 19/08/2026

Mfr. Part No.
SC189BSKTRT

Mouser Part No
947-SC189BSKTRT

Semtech

Switching Voltage Regulators 2.5MHZ-1.5A SYNC STEP DOWN REG

Learn More

Datasheet

2,995Expected 19/08/2026

Cut Tape

$1.80

$1.29

$1.16

$1.02

Reel

$0.821

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

SOT-23-5

Buck

1.1 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189ZULTRT
Semtech
1: $1.82
1,990Expected 14/08/2026

Mfr. Part No.
SC189ZULTRT

Mouser Part No
947-SC189ZULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

1,990Expected 14/08/2026

Cut Tape

$1.82

$1.30

$1.18

$1.03

Reel

$0.852

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

MLPD-UT-6

Buck

3.3 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 85 C

SC189

Reel, Cut Tape, MouseReel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189HULTRT
Semtech
3,000: $0.834
Non-Stocked

Mfr. Part No.
SC189HULTRT

Mouser Part No
947-SC189HULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

$0.834

$0.814

Min.: 3,000
Mult.: 3,000

: 3,000

SMD/SMT

MLPD-UT-6

Buck

1.5 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189NULTRT
Semtech
3,000: $0.881
Non-Stocked

Mfr. Part No.
SC189NULTRT

Mouser Part No
947-SC189NULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

$0.881

$0.834

Min.: 3,000
Mult.: 3,000

: 3,000

SMD/SMT

MLPD-UT-6

Buck

2 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189TULTRT
Semtech
3,000: $0.915
Non-Stocked

Mfr. Part No.
SC189TULTRT

Mouser Part No
947-SC189TULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

$0.915

$0.863

Min.: 3,000
Mult.: 3,000

: 3,000

SMD/SMT

MLPD-UT-6

Buck

2.5 V

1.5 A

1 Output

2.5 MHz

- 40 C

+ 125 C

SC189

Reel

SC189 Step Down Regulators

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