Overview
The LM3431AMH is a LED Driver made by Texas Instruments in a HTSSOP-28-EP package with 29 pins. -40℃~+125℃ 200kHz~1MHz 200mA 3 5V~36V Analog、PWM Boost HTSSOP-28-EP LED Drivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM3431AQMH_NOPB, from EasyEDA) and its footprint (EasyEDA_Cloud:HTSSOP-28_L9.7-W4.4-P0.65-LS6.4-BL-EP-4, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C1554267).
Symbol
Footprint
Parameters
10- Dimming
- Analog, PWM
- Features
- Short Circuit Protection, Over Voltage Protection, Over-Temperature Protection (OTP), LED open-circuit protection, Built-in soft-start
- Frequency - Switching
- 200kHz~1MHz
- Number of Channels
- 3
- Operating temperature
- -40℃~+125℃
- Output Current
- 200mA
- Switch Tube (Built-In/External)
- External
- Topology
- Boost
- Type
- DC-DC
- Voltage - Input(DC)
- 5V~36V
Order codes
1- LM3431AMH/NOPBLCSC C1554267
Pinout
29| Pin | Name | Type |
|---|---|---|
| 1 | VIN | Unspecified |
| 2 | PGND | Unspecified |
| 3 | VCC | Unspecified |
| 4 | LG | Unspecified |
| 5 | CS | Unspecified |
| 6 | ILIM | Unspecified |
| 7 | MODE/F | Unspecified |
| 8 | FF | Unspecified |
| 9 | RT | Unspecified |
| 10 | REF | Unspecified |
| 11 | REFIN | Unspecified |
| 12 | COMP | Unspecified |
| 13 | SGND | Unspecified |
| 14 | AFB | Unspecified |
| 15 | SS/SH | Unspecified |
| 16 | DLY | Unspecified |
| 17 | CFB | Unspecified |
| 18 | SC | Unspecified |
| 19 | LEDOFF | Unspecified |
| 20 | SNS3 | Unspecified |
| 21 | NDRV3 | Unspecified |
| 22 | SNS2 | Unspecified |
| 23 | NDRV2 | Unspecified |
| 24 | SNS1 | Unspecified |
| 25 | NDRV1 | Unspecified |
| 26 | THM | Unspecified |
| 27 | DIM | Unspecified |
| 28 | EN | Unspecified |
| 29 | SGND | Unspecified |
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Is there a KiCad symbol and footprint for the LM3431AMH?
Yes. The symbol is EasyEDA_Cloud:LM3431AQMH_NOPB and the footprint EasyEDA_Cloud:HTSSOP-28_L9.7-W4.4-P0.65-LS6.4-BL-EP-4, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM3431AMH?
HTSSOP-28-EP, with 29 pins. Its footprint is drawn on this page.
Where is the LM3431AMH datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM3431AMH?
JLCPCB lists it as part C1554267, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM3431AMH?
Parts like it in the library: the LM3431MH by Texas Instruments and the LM3464AMH by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
