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L4978D on a board, in 3D

L4978D

STMicroelectronics

-40℃~+150℃@(TJ) 1 2A 300kHz 8V~55V Buck Buck Built-in SOIC-16-300mil DC-DC Converters ROHS

Extended
DatasheetJLCPCBLCSCst/L4978D
Category
DC DC Converters
Package
SOIC-16-300mil
Pins
16

Overview

The L4978D is a DC DC Converter made by STMicroelectronics in a SOIC-16-300mil package with 16 pins. -40℃~+150℃@(TJ) 1 2A 300kHz 8V~55V Buck Buck Built-in SOIC-16-300mil DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:L4978D, from EasyEDA) and its footprint (Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C93521).

Symbol

VCC11FB14COMP13BOOT12OSC4SS_INH3OUT5OUT6GND2NC1NC7NC8NC9NC10NC15NC16
EasyEDA_Cloud:L4978DFrom EasyEDA

Footprint

12345678910111213141516
Package_SO:SOIC-16W_7.5x10.3mm_P1.27mmFrom KiCad's library

Parameters

9
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
2A
Switch tube (built-in/external)
Built-in
Topology
Buck
Voltage - Supply
8V~55V

Order codes

1

Pinout

16
The pins of the L4978D
PinNameType
1NCUnspecified
2GNDUnspecified
3SS_INHUnspecified
4OSCUnspecified
5OUTUnspecified
6OUTUnspecified
7NCUnspecified
8NCUnspecified
9NCUnspecified
10NCUnspecified
11VCCUnspecified
12BOOTUnspecified
13COMPOutput
14FBUnspecified
15NCUnspecified
16NCUnspecified

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A picture
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A picture that opens the part, for a README
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Questions

Is there a KiCad symbol and footprint for the L4978D?

Yes. The symbol is EasyEDA_Cloud:L4978D and the footprint Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the L4978D?

SOIC-16-300mil, with 16 pins. Its footprint is drawn on this page.

Where is the L4978D datasheet?

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

Where can I order the L4978D?

JLCPCB lists it as part C93521, with 0 in stock; the sellers' links on this page open their listings.

What can replace the L4978D?

Parts like it in the library: the LT1054ISW#PBF by Analog Devices, the ADUM5000ARWZ by Analog Devices, the ADUM6000ARWZ by Analog Devices and the LT1054ISW#TRPBF by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

5