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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Topology	Output Voltage	Output Current	Number of Outputs	Switching Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
Switching Voltage Regulators SYNC STEP DOWN REGULATOR SC189CULTRT Semtech 1: $1.31 31,021In Stock	Mfr. Part # SC189CULTRT Mouser Part # 947-SC189CULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	31,021In Stock	Cut Tape $1.31 $0.933 $0.841 $0.74 Reel $0.58 View $0.691 $0.662 $0.638 $0.57 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: $1.41 2,723In Stock	Mfr. Part # SC189BULTRT Mouser Part # 947-SC189BULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	2,723In Stock	Cut Tape $1.41 $1.01 $0.91 $0.801 Reel $0.648 View $0.749 $0.717 $0.696 $0.631 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: $1.30 2,705In Stock	Mfr. Part # SC189LULTRT Mouser Part # 947-SC189LULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	2,705In Stock	Cut Tape $1.30 $0.923 $0.832 $0.73 Reel $0.599 View $0.683 $0.654 $0.632 $0.573 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 SC189ASKTRT Semtech 1: $1.30 15,178In Stock	Mfr. Part # SC189ASKTRT Mouser Part # 947-SC189ASKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	15,178In Stock	Cut Tape $1.30 $0.926 $0.835 $0.734 Reel $0.602 View $0.685 $0.657 $0.635 $0.596 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 SC189LSKTRT Semtech 1: $1.40 3,415In Stock 3,000On Order	Mfr. Part # SC189LSKTRT Mouser Part # 947-SC189LSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	3,415In Stock 3,000On Order	Cut Tape $1.40 $1.01 $0.907 $0.799 Reel $0.651 View $0.746 $0.716 $0.694 $0.648 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: $1.48 8,114In Stock	Mfr. Part # SC189ZSKTRT Mouser Part # 947-SC189ZSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	8,114In Stock	Cut Tape $1.48 $1.10 $0.946 $0.842 View Reel $0.674 $0.788 $0.755 $0.721 $0.674 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 SC189CSKTRT Semtech 1: $1.38 12,982In Stock	Mfr. Part # SC189CSKTRT Mouser Part # 947-SC189CSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	12,982In Stock	Cut Tape $1.38 $1.05 $0.891 $0.795 Reel $0.662 View $0.743 $0.72 $0.697 $0.634 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: $1.47 2,995In Stock	Mfr. Part # SC189BSKTRT Mouser Part # 947-SC189BSKTRT	Semtech	Switching Voltage Regulators 2.5MHZ-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	2,995In Stock	Cut Tape $1.47 $1.05 $0.948 $0.834 View Reel $0.658 $0.779 $0.747 $0.724 $0.658 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 1.5A SYNCHRONOUS STEP DOWN REG SC189HSKTRT Semtech 1: $1.43 2,287In Stock	Mfr. Part # SC189HSKTRT Mouser Part # 947-SC189HSKTRT	Semtech	Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	2,287In Stock	Cut Tape $1.43 $1.02 $0.92 $0.809 View Reel $0.658 $0.757 $0.726 $0.704 $0.658 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 SC189YSKTRT Semtech 1: $1.38 1,009In Stock	Mfr. Part # SC189YSKTRT Mouser Part # 947-SC189YSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	1,009In Stock	Cut Tape $1.38 $0.995 $0.897 $0.791 Reel $0.639 View $0.739 $0.707 $0.685 $0.622 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: $1.40 5,721Expected 2027-09-23	Mfr. Part # SC189AULTRT Mouser Part # 947-SC189AULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	5,721Expected 2027-09-23	Cut Tape $1.40 $1.01 $0.909 $0.799 View Reel $0.648 $0.747 $0.716 $0.694 $0.648 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: $1.45 5,240Expected 2027-02-19	Mfr. Part # SC189ZULTRT Mouser Part # 947-SC189ZULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	5,240Expected 2027-02-19	Cut Tape $1.45 $1.04 $0.935 $0.822 View Reel $0.68 $0.768 $0.736 $0.713 $0.68 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 1: $1.41 Non-Stocked Lead-Time 26 Weeks	Mfr. Part # SC189HULTRT Mouser Part # 947-SC189HULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	Non-Stocked Lead-Time 26 Weeks	Cut Tape $1.41 $1.01 $0.912 $0.802 View Reel $0.66 $0.75 $0.719 $0.697 $0.66 MouseReel Available	Min.: 1 Mult.: 1 : 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, Cut Tape, MouseReel
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 about Semtech sc189 regulators	Datasheet	Non-Stocked	Reel $0.697 $0.664	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 about Semtech sc189 regulators	Datasheet	Non-Stocked	Reel $0.724 $0.683	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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