Overview
The LM2574-3.3YN is a DC DC Converter made by Microchip Technology in a PDIP-8 package with 8 pins. -40℃~+125℃@(TJ) 1 3.3V 40V 500mA 52kHz Buck Buck Built-in Fixed No PDIP-8 DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM2574-3.3YN, from EasyEDA) and its footprint (Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C641089).
Symbol
Footprint
Parameters
13- Features
- Overcurrent Protection, Cycle-by-cycle current limiting
- Frequency - Switching
- 52kHz
- Function
- Step-down type
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+125℃@(TJ)
- Output Current
- 500mA
- Output Type
- Fixed
- Output Voltage
- 3.3V
- Quiescent Current
- 5mA
- Switch tube (built-in/external)
- Built-in
- Synchronous Rectifier
- No
- Topology
- Buck
- Voltage - Supply
- 40V
Order codes
1- LM2574-3.3YNLCSC C641089
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | FB | Unspecified |
| 2 | SIG GND | Unspecified |
| 3 | ON/OFF | Unspecified |
| 4 | PWR GND | Unspecified |
| 5 | VIN | Unspecified |
| 6 | NC | Unspecified |
| 7 | OUTPUT | Unspecified |
| 8 | NC | Unspecified |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/microchip/LM2574-3.3YN" title="LM2574-3.3YN in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/microchip/LM2574-3.3YN.jpg" alt="LM2574-3.3YN" width="1200" height="900">[](https://pcbkit.io/parts/microchip/LM2574-3.3YN)Questions
Is there a KiCad symbol and footprint for the LM2574-3.3YN?
Yes. The symbol is EasyEDA_Cloud:LM2574-3.3YN and the footprint Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM2574-3.3YN?
PDIP-8, with 8 pins. Its footprint is drawn on this page.
Where is the LM2574-3.3YN datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the LM2574-3.3YN?
JLCPCB lists it as part C641089, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM2574-3.3YN?
Parts like it in the library: the LM2674N-3.3 by Texas Instruments, the LT1507CN8-3.3#PBF by Analog Devices, the LT1507IN8#PBF by Analog Devices and the LT1507IN8-3.3#PBF by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8
LM2674N-3.3
PDIP-8-40℃~+125℃@(TJ) 1 260kHz 3.3V 500mA 6.5V~40V Buck Buck Built-in Fixed No PDIP-8 DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersLT1507CN8-3.3#PBF
PDIP-80℃~+70℃@(TA) 1 1.5A 3.3V 4V~16V 500kHz Buck Buck Built-in Fixed No PDIP-8 DC-DC Converters ROHSAnalog DevicesDC-DC ConvertersLT1507IN8#PBF
PDIP-8-40℃~+85℃@(TA) 1 1.5A 4V~16V 500kHz Adjustable Buck Buck Built-in No PDIP-8 DC-DC Converters ROHSAnalog DevicesDC-DC ConvertersLT1507IN8-3.3#PBF
PDIP-8-40℃~+85℃@(TA) 1 1.5A 3.3V 4V~16V 500kHz Buck Buck Built-in Fixed No PDIP-8 DC-DC Converters ROHSAnalog DevicesDC-DC ConvertersMAX5033AUPA+
PDIP-80℃~+85℃@(TA) 1 125kHz 270uA 3.3V 500mA 7.5V~76V Buck Built-in Fixed No Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting Step-down type PDIP-8 DC-DC Converters ROHSMaxim Integrated (Analog Devices)DC-DC ConvertersMAX5035AUPA+
PDIP-80℃~+85℃@(TA) 1 125kHz 1A 3.3V 7.5V~76V Buck Buck Built-in Fixed No PDIP-8 DC-DC Converters ROHSMaxim Integrated (Analog Devices)DC-DC ConvertersMAX748ACPA+
PDIP-80℃~+70℃@(TA) 1 180kHz 3.3V 3.3V~16V 500mA Buck Built-in Fixed No Overcurrent Protection、Adjustable soft-start、Cycle-by-cycle current limiting、External compensation Step-down type PDIP-8 DC-DC Converters ROHSMaxim Integrated (Analog Devices)DC-DC ConvertersMIC4574-3.3YN
DIP-8-40℃~+85℃@(TA) 1 200kHz 3.3V 4V~24V 500mA Buck Buck Built-in Fixed No DIP-8 DC-DC Converters ROHSMicrochip TechnologyDC-DC Converters