component
LM3404MA
Public Made by Adomby adom
Texas Instruments LED Drivers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM3404MA
Texas Instruments · LED Drivers · SOIC-8
LM3404MA from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SW | output | Switch pin that connects to the output inductor and Schottky diode. |
| 2 | BOOT | output | MOSFET drive bootstrap pin; connect a 10-nF ceramic capacitor from this pin to SW. |
| 3 | DIM | input | PWM dimming input; a logic-level PWM signal on this pin enables and disables the power MOSFET to reduce the average LED light output. |
| 4 | GND | power_in | Ground pin; connect to system ground. |
| 5 | CS | input | Current sense feedback pin; a resistor from this pin to ground sets the LED array current. |
| 6 | RON | input | On-time control pin; a resistor from this pin to VIN sets the regulator controlled on-time. |
| 7 | VCC | power_in | Output of the internal 7-V linear regulator; bypass to ground with a minimum 0.1-µF ceramic capacitor with X5R or X7R dielectric. |
| 8 | VIN | power_in | Input voltage pin; nominal operating input range is 6 V to 42 V for the LM3404 (6 V to 75 V for the LM3404HV). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | LED Drivers |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM3404MA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm3404ma-etched.step/lm3404ma-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm3404ma.step/lm3404ma.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (47 pp, sha256
c30b6b258c57c07a, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).