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SC189ZSKTRT SC189ZSKTRT is a synchronous step-down regulator from Semtech. It provides a fixed 3.3V output at 1.5A from 2.9V to 5.5V input, switching at 2.5MHz, in SOT23-5 package.
Mfr Part #:

SC189ZSKTRT

Available from 2 distributors
Mfr Name: Semtech
Semtech
SC189ZSKTRT is a synchronous step-down regulator from Semtech. It provides a fixed 3.3V output at 1.5A from 2.9V to 5.5V input, switching at 2.5MHz, in SOT23-5 package.
✓ Total Stock: 4,000 pcs
$ Price Range: $1.08

SC189ZSKTRT Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Risen Electronics ✓
Non-Authorised Inventory information
3,000 pcs
On Request
3000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Xingangxin ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SC189ZSKTRT Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Function
Input Voltage
Mounting Style
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Type
Output Voltage
Supplier Device Package
Supply Voltage
Synchronous Rectifier
Topology
Type
Voltage
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SC189ZSKTRT Description

Short technical summary and product information.

The SC189ZSKTRT is a synchronous step-down (buck) switching regulator from Semtech. It delivers a fixed 3.3V output voltage at a maximum output current of 1.5A. The device operates from an input voltage range of 2.9V to 5.5V, making it suitable for a variety of low-voltage power rails. Its 2.5MHz switching frequency allows the use of small external inductors and capacitors, reducing overall solution footprint. The regulator features a synchronous topology, which improves efficiency by replacing the external catch diode with an internal low-resistance MOSFET. Load regulation is specified at 1%.

 

The SC189ZSKTRT is housed in a compact SOT23-5 package and supports surface-mount assembly. It operates over a temperature range of -40°C to +85°C, accommodating industrial and consumer applications. Typical applications include portable devices, point-of-load regulation, embedded systems requiring a 3.3V rail, and battery-powered equipment.

SC189ZSKTRT Quick Information

Product Type: DC-DC Switching Regulator
Canonical Name: SC189ZSKTRT Synchronous Step-Down Regulator 3.3V 1.5A
Subcategory: Buck Regulator

SC189ZSKTRT Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SC189ZSKTRT Estimated Pricing

Qty Low High
1+ $1.08 $1.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

SC189ZSKTRT Features

  • Fixed 3.3V output voltage at 1.5A.
  • Synchronous buck topology for efficiency.
  • 2.5MHz switching frequency reduces external components.
  • Wide input range from 2.9V to 5.5V.
  • Operating temperature range -40°C to +85°C.

SC189ZSKTRT Applications

  • Used in portable and battery-powered devices.
  • Suitable for point-of-load regulation.
  • Ideal for embedded systems requiring 3.3V rail.
  • Applicable in industrial and consumer electronics.

SC189ZSKTRT FAQs

6 frequently asked questions generated from this part’s specifications.
What is the output voltage of the SC189ZSKTRT?

The SC189ZSKTRT provides a fixed 3.3V output voltage.

What is the package type for SC189ZSKTRT?

The SC189ZSKTRT is housed in a SOT23-5 package.

What is the operating temperature range of the SC189ZSKTRT?

The operating temperature range is -40°C to +85°C.

What is the input voltage range for the SC189ZSKTRT?

The input voltage range is 2.9V to 5.5V.

What is the switching frequency of the SC189ZSKTRT?

The switching frequency is 2.5 MHz.

What is the load regulation of the SC189ZSKTRT?

Load regulation is 1%.

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