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 (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
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Topology
Output Voltage
Output Current
Number of Outputs
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
Semtech Switching Voltage Regulators 1.5A SYNCHRONOUS STEP DOWN REG
Datasheet
3,787In 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 SYNC STEP DOWN REGULATOR
Datasheet
31,303In 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
2,705In 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
9,358In Stock
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 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
2,246In Stock
18,000Expected 12/10/2026
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 2.5MHZ-1.5A SYNC STEP DOWN REG
Datasheet
2,995In Stock
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 2.5MHz-1.5A SYNC STEP DOWN REG
Datasheet
729In Stock
6,000Expected 30/09/2026
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
1,977In Stock
12,000On Order
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
1,109In 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 SYNC STEP DOWN REGULATOR
Datasheet
5,721On Order
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 SYNC STEP DOWN REGULATOR
Datasheet
5,240On Order
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
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
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