

Overview
The ETA3409S2F is a DC DC Converter made by etasolution in a SOT23-5 package with 5 pins. -40℃~+85℃ 1 1MHz 2.4V~7.3V 3A 600mV~7.3V Adjustable Buck Buck Built-in Yes SOT23-5 DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:AME5253A-AEVADJ, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. 89,690 are in stock at JLCPCB (part C7465553). 2 open-source boards in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
13- Features
- Overcurrent Protection
- Frequency - Switching
- 1MHz
- Function
- Step-down type
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+85℃
- Output Current
- 3A
- Output Type
- Adjustable
- Output Voltage
- 600mV~7.3V
- Quiescent Current
- 42uA
- Switch tube (built-in/external)
- Built-in
- Synchronous Rectifier
- Yes
- Topology
- Buck
- Voltage - Supply
- 2.4V~7.3V
Order codes
1- ETA3409S2FLCSC C7465553
Pinout
5| Pin | Name | Type |
|---|---|---|
| 1 | EN | Unspecified |
| 2 | GND | Unspecified |
| 3 | SW | Unspecified |
| 4 | IN | Unspecified |
| 5 | FB | Unspecified |
Open-source boards using it
All 2- 2 layers94 × 105.8 mm

- 2 layers31.3 × 26.4 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/etasolution/ETA3409S2F" title="ETA3409S2F in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/etasolution/ETA3409S2F.jpg" alt="ETA3409S2F" width="1200" height="900">[](https://pcbkit.io/parts/etasolution/ETA3409S2F)Questions
Is there a KiCad symbol and footprint for the ETA3409S2F?
Yes. The symbol is EasyEDA_Cloud:AME5253A-AEVADJ 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 ETA3409S2F?
SOT23-5, with 5 pins. Its footprint is drawn on this page.
Where is the ETA3409S2F datasheet?
etasolution publishes it: the Datasheet link on this page opens it.
Where can I order the ETA3409S2F?
JLCPCB lists it as part C7465553, with 89,690 in stock; the sellers' links on this page open their listings.
What can replace the ETA3409S2F?
Parts like it in the library: the RY3430 by RYCHIP Semiconductor Inc., the TMI3113B by TMI, the ETA3448S2F by etasolution and the HT8089ARTZ by HTCSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the ETA3409S2F?
2 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8RY3430
SOT-23-5-40℃~+85℃ 1 1.2MHz 2.5V~5.5V 3A 40uA Adjustable Buck Buck Built-in Yes SOT-23-5 DC-DC Converters ROHSRYCHIP Semiconductor Inc.DC-DC ConvertersTMI3113B
SOT-23-5-40℃~+85℃@(TA) 1 1MHz 2.7V~5.5V 3A 50uA Adjustable Buck Buck Built-in Yes SOT-23-5 DC-DC Converters ROHSTMIDC-DC ConvertersETA3448S2F
SOT23-5-40℃~+85℃ 1 1.5MHz~2.5MHz 2.5V~5.5V 3A 50uA 600mV~5.5V Adjustable Buck Buck Built-in Yes SOT23-5 DC-DC Converters ROHSetasolutionDC-DC ConvertersHT8089ARTZ
SOT-23-5-40℃~+85℃ 1 1.2MHz 2.5V~5.5V 3A 40uA Adjustable Buck Buck Built-in Yes SOT-23-5 DC-DC Converters ROHSHTCSEMIDC-DC ConvertersSK6613A
SOT-23-5-40℃~+125℃@(TJ) 1 1.2MHz 2.7V~5.5V 3A 40uA Adjustable Buck Buck Built-in Yes SOT-23-5 DC-DC Converters ROHSSuntekDC-DC ConvertersXC9221C09AMR-G
SOT-25-40℃~+85℃@(TA) 1 1MHz 2.8V~16V 3A 40uA Adjustable Buck Buck External No SOT-25 DC-DC Converters ROHSTorex SemiconductorDC-DC ConvertersXC9220A095MR-G
SOT-25-5-40℃~+85℃@(TA) 1 2.8V~16V 500kHz Buck Buck External No SOT-25-5 DC-DC Converters ROHSTorex SemiconductorDC-DC ConvertersXC9220A09AMR-G
SOT-25-5-40℃~+85℃@(TA) 1 1MHz 2.8V~16V 3A Buck Buck External No SOT-25-5 DC-DC Converters ROHSTorex SemiconductorDC-DC Converters