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L4978, in 3D

L4978

STMicroelectronics

-40℃~+150℃@(TJ) 1 2.5mA 2A 3.3V~50V 300kHz 8V~55V Adjustable Buck Buck Built-in No DIP-8 DC-DC Converters ROHS

Extended
DatasheetJLCPCBLCSCst/L4978
Category
DC DC Converters
Package
DIP-8
Pins
8

Overview

The L4978 is a DC DC Converter made by STMicroelectronics in a DIP-8 package with 8 pins. -40℃~+150℃@(TJ) 1 2.5mA 2A 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 (EasyEDA_Cloud:L4978, from EasyEDA) and its footprint (Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. 106 are in stock at JLCPCB (part C53329). 1 open-source board in 1 repository on GitHub use it.

Symbol

GND1SS_INH2OSC3OUT4VCC5BOOT6COMP7FB8
EasyEDA_Cloud:L4978From EasyEDA

Footprint

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

Parameters

13
Features
Adjustable soft-start
Frequency - Switching
300kHz
Function
Step-down type
Number of Outputs
1
Operating Temperature
-40℃~+150℃@(TJ)
Output Current
2A
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 L4978
PinNameType
1GNDUnspecified
2SS_INHUnspecified
3OSCUnspecified
4OUTUnspecified
5VCCUnspecified
6BOOTUnspecified
7COMPUnspecified
8FBUnspecified

Open-source boards using it

All 1
  • 2 layers142.5 × 110 mmTc2, the printed circuit board in 3D

    Tc2

    mmbln/tc2

    garden lamp controller

    70 parts

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A live frame, for any web page
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A picture
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A picture that opens the part, for a README
[![L4978](https://pcbkit.io/embed/parts/st/L4978.jpg?size=s)](https://pcbkit.io/parts/st/L4978)

Questions

Is there a KiCad symbol and footprint for the L4978?

Yes. The symbol is EasyEDA_Cloud:L4978 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 L4978?

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

Where is the L4978 datasheet?

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

Where can I order the L4978?

JLCPCB lists it as part C53329, with 106 in stock; the sellers' links on this page open their listings.

What can replace the L4978?

Parts like it in the library: the LT1109ACN8#PBF by Analog Devices, the LT1109ACN8-12#PBF by Analog Devices, the LT1302CN8#PBF by Analog Devices and the LT1302CN8-5#PBF by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the L4978?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8