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L4972AD on a board, in 3D

L4972AD

STMicroelectronics

-40℃~+150℃@(TJ) 1 15V~50V 200kHz 2A 5.1V~40V Adjustable Buck Buck Built-in No SO-20-300mil DC-DC Converters ROHS

Extended
DatasheetJLCPCBLCSCst/L4972AD
Category
DC DC Converters
Package
SO-20-300mil
Pins
20

Overview

The L4972AD is a DC DC Converter made by STMicroelectronics in a SO-20-300mil package with 20 pins. -40℃~+150℃@(TJ) 1 15V~50V 200kHz 2A 5.1V~40V Adjustable Buck Buck Built-in No SO-20-300mil DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:L4972AD, from EasyEDA) and its footprint (Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1355804).

Symbol

BOOTSTRAP1RESETDELAY2RESETOUT3P.FAILINPUT4GND5GND6FREQ.COMP.7SOFTSTART8FEEDBACKIN.9SYNCINPUT10Vi11N.C.12Vref13Vstar14GND15GND16ROSC17COSC18N.C.19OUTPUT20
EasyEDA_Cloud:L4972ADFrom EasyEDA

Footprint

1234567891011121314151617181920
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mmFrom KiCad's library

Parameters

13
Features
Overcurrent Protection, Adjustable soft-start, Operating status indication, Cycle-by-cycle current limiting, Frequency synchronization, External compensation
Frequency - Switching
200kHz
Function
Step-down type
Number of Outputs
1
Operating Temperature
-40℃~+150℃@(TJ)
Output Current
2A
Output Type
Adjustable
Output Voltage
5.1V~40V
Quiescent Current
13mA
Switch tube (built-in/external)
Built-in
Synchronous Rectifier
No
Topology
Buck
Voltage - Supply
15V~50V

Order codes

1

Pinout

20
The pins of the L4972AD
PinNameType
1BOOTSTRAPUnspecified
2RESETDELAYUnspecified
3RESETOUTUnspecified
4P.FAILINPUTUnspecified
5GNDUnspecified
6GNDUnspecified
7FREQ.COMP.Unspecified
8SOFTSTARTUnspecified
9FEEDBACKIN.Unspecified
10SYNCINPUTUnspecified
11ViUnspecified
12N.C.Unspecified
13VrefUnspecified
14VstarUnspecified
15GNDUnspecified
16GNDUnspecified
17ROSCUnspecified
18COSCUnspecified
19N.C.Unspecified
20OUTPUTUnspecified

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Questions

Is there a KiCad symbol and footprint for the L4972AD?

Yes. The symbol is EasyEDA_Cloud:L4972AD and the footprint Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the L4972AD?

SO-20-300mil, with 20 pins. Its footprint is drawn on this page.

Where is the L4972AD datasheet?

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

Where can I order the L4972AD?

JLCPCB lists it as part C1355804, with 0 in stock; the sellers' links on this page open their listings.

What can replace the L4972AD?

Parts like it in the library: the L4973D5.1 by STMicroelectronics, the LT1339CSW#PBF by Analog Devices, the L4973D3.3 by STMicroelectronics and the LT1371CSW#TRPBF by Analog Devices. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8