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 (CHF) 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: CHF 0.733 30’996In Stock	Mfr. Part No. SC189CULTRT Mouser Part No 947-SC189CULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	30’996In Stock	Cut Tape CHF 0.733 CHF 0.521 CHF 0.47 CHF 0.414 Reel CHF 0.325 View CHF 0.387 CHF 0.371 CHF 0.357 CHF 0.319 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: CHF 0.724 2’705In Stock	Mfr. Part No. SC189LULTRT Mouser Part No 947-SC189LULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	2’705In Stock	Cut Tape CHF 0.724 CHF 0.516 CHF 0.465 CHF 0.408 Reel CHF 0.335 View CHF 0.382 CHF 0.365 CHF 0.354 CHF 0.32 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: CHF 0.789 2’723In Stock	Mfr. Part No. SC189BULTRT Mouser Part No 947-SC189BULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	2’723In Stock	Cut Tape CHF 0.789 CHF 0.564 CHF 0.509 CHF 0.447 Reel CHF 0.362 View CHF 0.418 CHF 0.401 CHF 0.388 CHF 0.353 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: CHF 0.724 15’174In Stock	Mfr. Part No. SC189ASKTRT Mouser Part No 947-SC189ASKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	15’174In Stock	Cut Tape CHF 0.724 CHF 0.518 CHF 0.467 CHF 0.411 Reel CHF 0.336 View CHF 0.383 CHF 0.367 CHF 0.355 CHF 0.333 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: CHF 0.781 3’411In Stock 3’000Expected 11/11/2026	Mfr. Part No. SC189LSKTRT Mouser Part No 947-SC189LSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	3’411In Stock 3’000Expected 11/11/2026	Cut Tape CHF 0.781 CHF 0.562 CHF 0.507 CHF 0.446 Reel CHF 0.364 View CHF 0.417 CHF 0.40 CHF 0.388 CHF 0.362 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: CHF 0.829 8’079In Stock	Mfr. Part No. SC189ZSKTRT Mouser Part No 947-SC189ZSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	8’079In Stock	Cut Tape CHF 0.829 CHF 0.618 CHF 0.529 CHF 0.471 View Reel CHF 0.376 CHF 0.44 CHF 0.422 CHF 0.403 CHF 0.376 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: CHF 0.773 12’890In Stock	Mfr. Part No. SC189CSKTRT Mouser Part No 947-SC189CSKTRT	Semtech	Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	12’890In Stock	Cut Tape CHF 0.773 CHF 0.584 CHF 0.498 CHF 0.445 Reel CHF 0.371 View CHF 0.416 CHF 0.402 CHF 0.389 CHF 0.354 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: CHF 0.821 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 about Semtech sc189 regulators	Datasheet	2’995In Stock	Cut Tape CHF 0.821 CHF 0.588 CHF 0.53 CHF 0.466 View Reel CHF 0.368 CHF 0.435 CHF 0.417 CHF 0.405 CHF 0.368 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: CHF 0.797 2’287In Stock	Mfr. Part No. SC189HSKTRT Mouser Part No 947-SC189HSKTRT	Semtech	Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG Learn More about Semtech sc189 regulators	Datasheet	2’287In Stock	Cut Tape CHF 0.797 CHF 0.57 CHF 0.515 CHF 0.452 View Reel CHF 0.368 CHF 0.423 CHF 0.405 CHF 0.394 CHF 0.368 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: CHF 0.773 1’009In Stock	Mfr. Part No. SC189YSKTRT Mouser Part No 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 CHF 0.773 CHF 0.556 CHF 0.502 CHF 0.442 Reel CHF 0.358 View CHF 0.413 CHF 0.395 CHF 0.383 CHF 0.348 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: CHF 0.781 5’721Expected 9/23/2027	Mfr. Part No. SC189AULTRT Mouser Part No 947-SC189AULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	5’721Expected 9/23/2027	Cut Tape CHF 0.781 CHF 0.563 CHF 0.508 CHF 0.446 View Reel CHF 0.362 CHF 0.417 CHF 0.40 CHF 0.388 CHF 0.362 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: CHF 0.813 5’240Expected 2/19/2027	Mfr. Part No. SC189ZULTRT Mouser Part No 947-SC189ZULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	5’240Expected 2/19/2027	Cut Tape CHF 0.813 CHF 0.58 CHF 0.522 CHF 0.46 View Reel CHF 0.38 CHF 0.429 CHF 0.411 CHF 0.399 CHF 0.38 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: CHF 0.789 Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. SC189HULTRT Mouser Part No 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 CHF 0.789 CHF 0.564 CHF 0.509 CHF 0.448 View Reel CHF 0.369 CHF 0.419 CHF 0.402 CHF 0.389 CHF 0.369 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: CHF 0.389 Non-Stocked	Mfr. Part No. SC189NULTRT Mouser Part No 947-SC189NULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	Non-Stocked	Reel CHF 0.389 CHF 0.371	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: CHF 0.405 Non-Stocked	Mfr. Part No. SC189TULTRT Mouser Part No 947-SC189TULTRT	Semtech	Switching Voltage Regulators SYNC STEP DOWN REGULATOR Learn More about Semtech sc189 regulators	Datasheet	Non-Stocked	Reel CHF 0.405 CHF 0.382	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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SC189 Step Down Regulators

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