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LP3943ISQ on a board, in 3D

LP3943ISQ

Texas Instruments

-40℃~+85℃ 16 2.3V~5.5V 25mA Built-in PWM、I2C WQFN-24-EP(4x4) LED Drivers ROHS

Extended
DatasheetJLCPCBLCSCti/LP3943ISQ
Category
LED Drivers
Package
WQFN-24-EP(4x4)
Pins
25

Overview

The LP3943ISQ is a LED Driver made by Texas Instruments in a WQFN-24-EP(4x4) package with 25 pins. -40℃~+85℃ 16 2.3V~5.5V 25mA Built-in PWM、I2C WQFN-24-EP(4x4) LED Drivers ROHS.

PCBKit's library has its KiCad symbol (Celestial_Driver_LED:TI LP3943ISQ, from Altium's library) and its footprint (EasyEDA_Cloud:WQFN-24_L4.0-W4.0-P0.50-BL-EP2.5, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2679146). 1 open-source board in 1 repository on GitHub use it.

Symbol

~RST18A022A123A224LED_01LED_12LED_1012LED_1113LED_1214LED_1315LED_1416LED_1517LED_23LED_34LED_45LED_56LED_67LED_78LED_810LED_911SCL19SDA20VDD21GND9DAP25
Celestial_Driver_LED:TI LP3943ISQFrom Altium's library

Footprint

25
EasyEDA_Cloud:WQFN-24_L4.0-W4.0-P0.50-BL-EP2.5From EasyEDA

Parameters

8
Dimming
PWM
Frequency - Switching
0.625Hz~160Hz
Number of Channels
16
Operating temperature
-40℃~+85℃
Output Current
25mA
Switch Tube (Built-In/External)
Built-in
Type
DC-DC
Voltage - Input(DC)
2.3V~5.5V

Order codes

2

Pinout

25
The pins of the LP3943ISQ
PinNameType
1LED_0Passive
2LED_1Passive
3LED_2Passive
4LED_3Passive
5LED_4Passive
6LED_5Passive
7LED_6Passive
8LED_7Passive
9GNDPassive
10LED_8Passive
11LED_9Passive
12LED_10Passive
13LED_11Passive
14LED_12Passive
15LED_13Passive
16LED_14Passive
17LED_15Passive
18~RSTPassive
19SCLPassive
20SDAPassive
21VDDPassive
22A0Passive
23A1Passive
24A2Passive
25DAPPassive

Open-source boards using it

All 1

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Questions

Is there a KiCad symbol and footprint for the LP3943ISQ?

Yes. The symbol is Celestial_Driver_LED:TI LP3943ISQ and the footprint EasyEDA_Cloud:WQFN-24_L4.0-W4.0-P0.50-BL-EP2.5, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LP3943ISQ?

WQFN-24-EP(4x4), with 25 pins. Its footprint is drawn on this page.

Where is the LP3943ISQ datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LP3943ISQ?

JLCPCB lists it as part C2679146, with 0 in stock; the sellers' links on this page open their listings.

What can replace the LP3943ISQ?

Parts like it in the library: the LP55231SQX by Texas Instruments, the LP3944ISQ by Texas Instruments, the LM27965SQ by Texas Instruments and the LM27965SQ-M by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LP3943ISQ?

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

Parts like it

6