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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Description Datasheet Availability Pricing (THB) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
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Output Voltage
Output Current
Number of Outputs
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
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Packaging
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
33,733In Stock
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
2,733In Stock
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
2,905In Stock
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
Semtech Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
7,390In Stock
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
Semtech Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG
Datasheet
3,792In Stock
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
Semtech Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
4,300In Stock
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
Semtech Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
923In Stock
9,000Expected 8/11/2026
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
257In Stock
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
Semtech Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
1,159In Stock
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
Semtech Switching Voltage Regulators 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
11,903Expected 8/10/2026
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
Semtech Switching Voltage Regulators 2.5MHZ-1.5A SYNC STEP DOWN REG
Datasheet
2,995Expected 8/10/2026
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
3,000Expected 8/14/2026
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
Non-Stocked
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
Non-Stocked
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
Semtech Switching Voltage Regulators SYNC STEP DOWN REGULATOR
Datasheet
Non-Stocked
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