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: S/3.85
3,787In Stock

Mfr. Part #
SC189HSKTRT

Mouser Part #
947-SC189HSKTRT

Semtech

Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG

Learn More

Datasheet

3,787In Stock

Cut Tape

S/3.85

S/2.76

S/2.49

S/2.19

Reel

S/1.71

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: S/3.54
31,303In Stock

Mfr. Part #
SC189CULTRT

Mouser Part #
947-SC189CULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

31,303In Stock

Cut Tape

S/3.54

S/2.52

S/2.27

S/2.00

Reel

S/1.58

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: S/3.81
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

S/3.81

S/2.73

S/2.46

S/2.16

Reel

S/1.75

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: S/3.50
2,705In Stock

Mfr. Part #
SC189LULTRT

Mouser Part #
947-SC189LULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

2,705In Stock

Cut Tape

S/3.50

S/2.50

S/2.25

S/1.97

Reel

S/1.62

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: S/4.01
9,208In Stock

Mfr. Part #
SC189ZSKTRT

Mouser Part #
947-SC189ZSKTRT

Semtech

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

Learn More

Datasheet

9,208In Stock

Cut Tape

S/4.01

S/2.99

S/2.58

S/2.28

View

Reel

S/1.83

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: S/3.50
2,246In Stock
18,000Expected 10/12/2026

Mfr. Part #
SC189ASKTRT

Mouser Part #
947-SC189ASKTRT

Semtech

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

Learn More

Datasheet

2,246In Stock

18,000Expected 10/12/2026

Cut Tape

S/3.50

S/2.50

S/2.26

S/1.99

Reel

S/1.63

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: S/3.85
2,995In Stock

Mfr. Part #
SC189BSKTRT

Mouser Part #
947-SC189BSKTRT

Semtech

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

Learn More

Datasheet

2,995In Stock

Cut Tape

S/3.85

S/2.76

S/2.49

S/2.19

Reel

S/1.77

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: S/3.78
729In Stock
6,000Expected 9/30/2026

Mfr. Part #
SC189LSKTRT

Mouser Part #
947-SC189LSKTRT

Semtech

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

Learn More

Datasheet

729In Stock

6,000Expected 9/30/2026

Cut Tape

S/3.78

S/2.72

S/2.45

S/2.16

Reel

S/1.81

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: S/3.78
1,962In Stock
12,000On Order

Mfr. Part #
SC189CSKTRT

Mouser Part #
947-SC189CSKTRT

Semtech

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

Learn More

Datasheet

1,962In Stock

12,000On Order

Cut Tape

S/3.78

S/2.83

S/2.44

S/2.15

Reel

S/1.78

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: S/3.74
1,109In Stock

Mfr. Part #
SC189YSKTRT

Mouser Part #
947-SC189YSKTRT

Semtech

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

Learn More

Datasheet

1,109In Stock

Cut Tape

S/3.74

S/2.69

S/2.43

S/2.14

Reel

S/1.73

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: S/3.78
5,721On Order

Mfr. Part #
SC189AULTRT

Mouser Part #
947-SC189AULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

5,721On Order

Cut Tape

S/3.78

S/2.72

S/2.46

S/2.16

Reel

S/1.77

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: S/3.89
5,240Expected 2/19/2027

Mfr. Part #
SC189ZULTRT

Mouser Part #
947-SC189ZULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

5,240Expected 2/19/2027

Cut Tape

S/3.89

S/2.78

S/2.51

S/2.21

Reel

S/1.82

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: S/1.78
Non-Stocked

Mfr. Part #
SC189HULTRT

Mouser Part #
947-SC189HULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

S/1.78

S/1.71

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: S/4.01
Non-Stocked

Mfr. Part #
SC189NULTRT

Mouser Part #
947-SC189NULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Cut Tape

S/4.01

S/2.87

S/2.59

S/2.28

Reel

S/1.88

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: S/1.96
Non-Stocked

Mfr. Part #
SC189TULTRT

Mouser Part #
947-SC189TULTRT

Semtech

Switching Voltage Regulators SYNC STEP DOWN REGULATOR

Learn More

Datasheet

Non-Stocked

Reel

S/1.96

S/1.85

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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