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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Results: 15

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Part #

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

SC189CULTRT
Semtech
1: $1.25
34,144In Stock

Mfr. Part #
SC189CULTRT

Mouser Part #
947-SC189CULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

34,144In Stock

Cut Tape

$1.25

$0.933

$0.841

$0.74

Reel

$0.606

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: $1.30
2,905In Stock

Mfr. Part #
SC189LULTRT

Mouser Part #
947-SC189LULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

2,905In Stock

Cut Tape

$1.30

$0.923

$0.832

$0.73

View

Reel

$0.585

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: $1.41
2,733In Stock

Mfr. Part #
SC189BULTRT

Mouser Part #
947-SC189BULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

2,733In Stock

Cut Tape

$1.41

$1.01

$0.91

$0.801

Reel

$0.66

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 1.5A SYNCHRONOUS STEP DOWN REG

SC189HSKTRT
Semtech
1: $1.43
3,797In Stock

Mfr. Part #
SC189HSKTRT

Mouser Part #
947-SC189HSKTRT

Semtech

Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG

Learn More

Datasheet

3,797In Stock

Cut Tape

$1.43

$1.02

$0.92

$0.809

Reel

$0.667

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: $1.40
5,010In Stock

Mfr. Part #
SC189LSKTRT

Mouser Part #
947-SC189LSKTRT

Semtech

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

Learn More

Datasheet

5,010In Stock

Cut Tape

$1.40

$1.01

$0.907

$0.799

Reel

$0.652

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

SC189ASKTRT
Semtech
1: $1.30
1,824In Stock
9,000Expected 2026-06-18

Mfr. Part #
SC189ASKTRT

Mouser Part #
947-SC189ASKTRT

Semtech

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

Learn More

Datasheet

1,824In Stock

9,000Expected 2026-06-18

Cut Tape

$1.30

$0.926

$0.835

$0.734

Reel

$0.602

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

SC189CSKTRT
Semtech
1: $1.37
117In Stock
12,000Expected 2026-06-12

Mfr. Part #
SC189CSKTRT

Mouser Part #
947-SC189CSKTRT

Semtech

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

Learn More

Datasheet

117In Stock

12,000Expected 2026-06-12

Cut Tape

$1.37

$0.986

$0.868

$0.776

Reel

$0.639

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

SC189ZSKTRT
Semtech
1: $1.43
1,436In Stock
9,000Expected 2026-06-16

Mfr. Part #
SC189ZSKTRT

Mouser Part #
947-SC189ZSKTRT

Semtech

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

Learn More

Datasheet

1,436In Stock

9,000Expected 2026-06-16

Cut Tape

$1.43

$1.04

$0.937

$0.828

Reel

$0.681

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: $1.40
1,257In Stock

Mfr. Part #
SC189AULTRT

Mouser Part #
947-SC189AULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

1,257In Stock

Cut Tape

$1.40

$1.01

$0.909

$0.799

Reel

$0.657

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: $1.38
1,159In Stock

Mfr. Part #
SC189YSKTRT

Mouser Part #
947-SC189YSKTRT

Semtech

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

Learn More

Datasheet

1,159In Stock

Cut Tape

$1.38

$0.995

$0.897

$0.791

Reel

$0.649

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

SC189ZULTRT
Semtech
1: $1.44
3,300On Order

Mfr. Part #
SC189ZULTRT

Mouser Part #
947-SC189ZULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

3,300On Order

Cut Tape

$1.44

$1.03

$0.93

$0.818

Reel

$0.674

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 2.5MHZ-1.5A SYNC STEP DOWN REG

SC189BSKTRT
Semtech
1: $1.43
2,995On Order

Mfr. Part #
SC189BSKTRT

Mouser Part #
947-SC189BSKTRT

Semtech

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

Learn More

Datasheet

2,995On Order

Cut Tape

$1.43

$1.02

$0.92

$0.811

Reel

$0.658

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

SC189HULTRT
Semtech
3,000: $0.66
Non-Stocked

Mfr. Part #
SC189HULTRT

Mouser Part #
947-SC189HULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

$0.66

$0.644

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: $0.697
Non-Stocked

Mfr. Part #
SC189NULTRT

Mouser Part #
947-SC189NULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

$0.697

$0.691

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: $0.724
Non-Stocked

Mfr. Part #
SC189TULTRT

Mouser Part #
947-SC189TULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

$0.724

$0.684

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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