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L4971 on a board, in 3D

L4971

STMicroelectronics

-40℃~+150℃@(TJ) 1 1.5A 2.5mA 3.3V~50V 300kHz 8V~55V Adjustable Buck Buck Built-in No DIP-8 DC-DC Converters ROHS

Extended
DatasheetJLCPCBLCSCst/L4971
Category
DC DC Converters
Package
DIP-8
Pins
8

Overview

The L4971 is a DC DC Converter made by STMicroelectronics in a DIP-8 package with 8 pins. -40℃~+150℃@(TJ) 1 1.5A 2.5mA 3.3V~50V 300kHz 8V~55V Adjustable Buck Buck Built-in No DIP-8 DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (Regulators:L4971, from CERN's library) and its footprint (Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C361017).

Symbol

VCC5OSC3COMP7SS_INH2OUT4BOOT6FB8GND1
Regulators:L4971From CERN's library

Footprint

12345678
Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPadsFrom KiCad's library

Parameters

13
Features
Adjustable soft-start, Cycle-by-cycle current limiting, Hiccup current limiting
Frequency - Switching
300kHz
Function
Step-down type
Number of Outputs
1
Operating Temperature
-40℃~+150℃@(TJ)
Output Current
1.5A
Output Type
Adjustable
Output Voltage
3.3V~50V
Quiescent Current
2.5mA
Switch tube (built-in/external)
Built-in
Synchronous Rectifier
No
Topology
Buck
Voltage - Supply
8V~55V

Order codes

1

Pinout

8
The pins of the L4971
PinNameType
1GNDPower in
2SS_INHInput
3OSCInput
4OUTOutput
5VCCPower in
6BOOTInput
7COMPOutput
8FBInput

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/st/L4971" title="L4971 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/st/L4971.jpg" alt="L4971" width="1200" height="900">
A picture that opens the part, for a README
[![L4971](https://pcbkit.io/embed/parts/st/L4971.jpg?size=s)](https://pcbkit.io/parts/st/L4971)

Questions

Is there a KiCad symbol and footprint for the L4971?

Yes. The symbol is Regulators:L4971 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 L4971?

DIP-8, with 8 pins. Its footprint is drawn on this page.

Where is the L4971 datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the L4971?

JLCPCB lists it as part C361017, with 0 in stock; the sellers' links on this page open their listings.

What can replace the L4971?

Parts like it in the library: the MC34063ECN by STMicroelectronics, the MC34063EBN by STMicroelectronics, the MC34063N by HGSEMI and the L4978 by STMicroelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8