2 layers100 × 100 mm
Overview
The L5973AD is a DC DC Converter made by STMicroelectronics in a SOP-8-EP package with 9 pins. -40℃~+150℃@(TJ) 1 1.235V~35V 2.7mA 2A 4V~36V 500kHz Adjustable Buck Buck Built-in No SOP-8-EP DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:L5973AD, from EasyEDA) and its footprint (EasyEDA_Cloud:SOP-8_L4.9-W3.9-P1.27-LS6.0-TL-EP-1, from EasyEDA), ready for a KiCad board. 10 are in stock at JLCPCB (part C1355773). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
13- Features
- Overcurrent Protection
- Frequency - Switching
- 500kHz
- Function
- Step-down type
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+150℃@(TJ)
- Output Current
- 2A
- Output Type
- Adjustable
- Output Voltage
- 1.235V~35V
- Quiescent Current
- 2.7mA
- Switch tube (built-in/external)
- Built-in
- Synchronous Rectifier
- No
- Topology
- Buck
- Voltage - Supply
- 4V~36V
Order codes
1- L5973ADLCSC C1355773
Pinout
9| Pin | Name | Type |
|---|---|---|
| 1 | OUT | Unspecified |
| 2 | SYNC | Unspecified |
| 3 | INH | Unspecified |
| 4 | COMP | Unspecified |
| 5 | FB | Unspecified |
| 6 | VREF | Unspecified |
| 7 | GND | Unspecified |
| 8 | VCC | Unspecified |
| 9 | EP | Unspecified |
Open-source boards using it
All 1Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/st/L5973AD" title="L5973AD in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/L5973AD.jpg" alt="L5973AD" width="1200" height="900">[](https://pcbkit.io/parts/st/L5973AD)Questions
Is there a KiCad symbol and footprint for the L5973AD?
Yes. The symbol is EasyEDA_Cloud:L5973AD and the footprint EasyEDA_Cloud:SOP-8_L4.9-W3.9-P1.27-LS6.0-TL-EP-1, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the L5973AD?
SOP-8-EP, with 9 pins. Its footprint is drawn on this page.
Where is the L5973AD datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the L5973AD?
JLCPCB lists it as part C1355773, with 10 in stock; the sellers' links on this page open their listings.
What can replace the L5973AD?
Parts like it in the library: the TPS5450DDA by Texas Instruments and the AAP6040ASW8 by SG Micro. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the L5973AD?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
2
TPS5450DDA
SOP-8-EP-40℃~+125℃@(TJ) 1 1.22V~36V 18uA 5.5V~36V 500kHz 5A Adjustable Buck Built-in Overcurrent Protection、Cycle-by-cycle current limiting、Hiccup current limiting Step-down type Yes SOP-8-EP DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersAAP6040ASW8
SOP-8-EPSOP-8-EP DC-DC Converters ROHSSG MicroDC-DC Converters