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 1.5A SYNCHRONOUS STEP DOWN REG

SC189HSKTRT
Semtech
1: $1.35
3,787In Stock

Mfr. Part No.
SC189HSKTRT

Mouser Part No
947-SC189HSKTRT

Semtech

Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG

Learn More

Datasheet

3,787In Stock

Cut Tape

$1.35

$0.963

$0.869

$0.764

Reel

$0.598

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 SYNC STEP DOWN REGULATOR

SC189CULTRT
Semtech
1: $1.24
31,303In Stock

Mfr. Part No.
SC189CULTRT

Mouser Part No
947-SC189CULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

31,303In Stock

Cut Tape

$1.24

$0.881

$0.794

$0.699

Reel

$0.554

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

SC189BULTRT
Semtech
1: $1.33
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

$1.33

$0.953

$0.86

$0.756

Reel

$0.612

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 SYNC STEP DOWN REGULATOR

SC189LULTRT
Semtech
1: $1.22
2,705In Stock

Mfr. Part No.
SC189LULTRT

Mouser Part No
947-SC189LULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

2,705In Stock

Cut Tape

$1.22

$0.872

$0.786

$0.69

Reel

$0.566

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 2.5MHz-1.5A SYNC STEP DOWN REG

SC189ZSKTRT
Semtech
1: $1.40
9,358In Stock

Mfr. Part No.
SC189ZSKTRT

Mouser Part No
947-SC189ZSKTRT

Semtech

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

Learn More

Datasheet

9,358In Stock

Cut Tape

$1.40

$1.04

$0.903

$0.796

View

Reel

$0.641

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 2.5MHz-1.5A SYNC STEP DOWN REG

SC189ASKTRT
Semtech
1: $1.22
2,246In Stock
18,000Expected 12/10/2026

Mfr. Part No.
SC189ASKTRT

Mouser Part No
947-SC189ASKTRT

Semtech

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

Learn More

Datasheet

2,246In Stock

18,000Expected 12/10/2026

Cut Tape

$1.22

$0.874

$0.789

$0.694

Reel

$0.568

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 2.5MHZ-1.5A SYNC STEP DOWN REG

SC189BSKTRT
Semtech
1: $1.35
2,995In Stock

Mfr. Part No.
SC189BSKTRT

Mouser Part No
947-SC189BSKTRT

Semtech

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

Learn More

Datasheet

2,995In Stock

Cut Tape

$1.35

$0.963

$0.869

$0.766

Reel

$0.619

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 2.5MHz-1.5A SYNC STEP DOWN REG

SC189LSKTRT
Semtech
1: $1.32
729In Stock
6,000Expected 30/9/2026

Mfr. Part No.
SC189LSKTRT

Mouser Part No
947-SC189LSKTRT

Semtech

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

Learn More

Datasheet

729In Stock

6,000Expected 30/9/2026

Cut Tape

$1.32

$0.949

$0.857

$0.755

Reel

$0.634

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

SC189CSKTRT
Semtech
1: $1.32
1,978In Stock
12,000On Order

Mfr. Part No.
SC189CSKTRT

Mouser Part No
947-SC189CSKTRT

Semtech

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

Learn More

Datasheet

1,978In Stock

12,000On Order

Cut Tape

$1.32

$0.987

$0.854

$0.751

Reel

$0.623

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

SC189YSKTRT
Semtech
1: $1.31
1,109In 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

1,109In Stock

Cut Tape

$1.31

$0.94

$0.847

$0.747

Reel

$0.604

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 SYNC STEP DOWN REGULATOR

SC189AULTRT
Semtech
1: $1.32
5,721On Order

Mfr. Part No.
SC189AULTRT

Mouser Part No
947-SC189AULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

5,721On Order

Cut Tape

$1.32

$0.951

$0.858

$0.755

Reel

$0.62

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 SYNC STEP DOWN REGULATOR

SC189ZULTRT
Semtech
1: $1.36
5,240On Order

Mfr. Part No.
SC189ZULTRT

Mouser Part No
947-SC189ZULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

5,240On Order

Cut Tape

$1.36

$0.972

$0.879

$0.772

Reel

$0.636

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: $0.623
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

$0.623

$0.598

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
1: $1.40
Non-Stocked

Mfr. Part No.
SC189NULTRT

Mouser Part No
947-SC189NULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Cut Tape

$1.40

$1.00

$0.904

$0.797

Reel

$0.658

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SMD/SMT

MLPD-UT-6

Buck

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

SC189TULTRT
Semtech
3,000: $0.684
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

$0.684

$0.645

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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