

Overview
The SC189ZSKTRT is a DC DC Converter made by SEMTECH in a SOT-23-5 package with 5 pins. -40℃~+125℃@(TJ) 1 1.5A 2.5MHz 2.9V~5.5V 3.3V Buck Buck Built-in Fixed Yes SOT-23-5 DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SC189YSKTRT, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. 183 are in stock at JLCPCB (part C2650317). 7 open-source boards in 6 repositories on GitHub use it.
Symbol
Footprint
Parameters
13- Features
- Overcurrent Protection
- Frequency - Switching
- 2.5MHz
- Function
- Step-down type
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+125℃@(TJ)
- Output Current
- 1.5A
- Output Type
- Fixed
- Output Voltage
- 3.3V
- Quiescent Current
- 7.5mA
- Switch tube (built-in/external)
- Built-in
- Synchronous Rectifier
- Yes
- Topology
- Buck
- Voltage - Supply
- 2.9V~5.5V
Order codes
1- SC189ZSKTRTLCSC C2650317
Pinout
5| Pin | Name | Type |
|---|---|---|
| 1 | VIN | Unspecified |
| 2 | GND | Unspecified |
| 3 | EN | Unspecified |
| 4 | VOUT | Unspecified |
| 5 | LX | Unspecified |
Open-source boards using it
All 7- 4 layers60 × 100 mm

- 8 layers110.3 × 59.1 mm

DFTBoard
SunnyYoshimitsu/CelestiCall
An attempt at making a somewhat modern smartphone with many functions.
313 parts1 - 4 layers65 × 30 mm

VoltaStreamZERO
JulianVolodia/voltastream0-kicad
KiCad PCB files for high quality audio board with NXP i.MX6ULL processor - ARM Cortex-A7 @ 996MHz; 0.5G/1G RAM; TI PCM5121 or PCM5142 DACs; with RTC
128 parts - 2 layers98.9 × 55.2 mm

CamCAD
lxremipsxm/camera
CAD and code for a portable camera with an STM32F407. This is a continuation of a project I had started a long time ago, which I called stmcam, at this repository here: https://github.com/lxremipsxm/stmcam.
70 parts - 2 layers75.6 × 142.2 mm

Device
turtlebasket/pocket-operator
HOPE Fa2024 Project: Pocket Operator (portable audio sequencer / synthesizer)
53 parts - 8 layers120 × 65.6 mm

- 6 layers57.4 × 96 mm

DFTBoard
SunnyYoshimitsu/CelestiCall
An attempt at making a somewhat modern smartphone with many functions.
209 parts1
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<iframe src="https://pcbkit.io/embed/parts/semtech/SC189ZSKTRT" title="SC189ZSKTRT in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/semtech/SC189ZSKTRT.jpg" alt="SC189ZSKTRT" width="1200" height="900">[](https://pcbkit.io/parts/semtech/SC189ZSKTRT)Questions
Is there a KiCad symbol and footprint for the SC189ZSKTRT?
Yes. The symbol is EasyEDA_Cloud:SC189YSKTRT and the footprint Package_TO_SOT_SMD:SOT-23-5, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SC189ZSKTRT?
SOT-23-5, with 5 pins. Its footprint is drawn on this page.
Where is the SC189ZSKTRT datasheet?
SEMTECH publishes it: the Datasheet link on this page opens it.
Where can I order the SC189ZSKTRT?
JLCPCB lists it as part C2650317, with 183 in stock; the sellers' links on this page open their listings.
What can replace the SC189ZSKTRT?
Parts like it in the library: the ETA1036V33S2F by etasolution, the XT1861B332SR-G by NATLINEAR, the H8118A33M5R by Shanghai Siproin Microelectronics and the SK6110CA33M5R by Suntek. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SC189ZSKTRT?
7 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8ETA1036V33S2F
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SOT-23-5L-40℃~+85℃@(TA) 1 15uA 3.3V 300kHz 900mV~6.5V Boost Boost Built-in Yes SOT-23-5L DC-DC Converters ROHSNATLINEARDC-DC ConvertersH8118A33M5R
SOT-23-5-40℃~+85℃ 1 3.3V 300kHz Boost Boost Built-in Yes SOT-23-5 DC-DC Converters ROHSShanghai Siproin MicroelectronicsDC-DC ConvertersSK6110CA33M5R
SOT-23-5-40℃~+85℃ 1 3.3V 300kHz Boost Boost Built-in Yes SOT-23-5 DC-DC Converters ROHSSuntekDC-DC ConvertersS-8352A33MC-K2ST2U
SOT-23-5-40℃~+85℃@(TA) 1 100kHz Boost Boost Built-in No SOT-23-5 DC-DC Converters ROHSABLICDC-DC ConvertersS-8352D33MC-K8ST2U
SOT-23-5-40℃~+85℃@(TA) 1 100kHz Boost Boost Built-in No SOT-23-5 DC-DC Converters ROHSABLICDC-DC ConvertersS-8354A33MC-JQST2U
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SOT-23-5-40℃~+85℃ 1 3.3V 50kHz Boost Boost Built-in Fixed No SOT-23-5 DC-DC Converters ROHSABLICDC-DC Converters