component
LM3404HVMRX
Public Unreviewedby Ray
Texas Instruments LED Drivers, SO-8-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownLM3404HVMRX
Texas Instruments · LED Drivers · SO-8-EP
LM3404HVMRX from Texas Instruments, in a SO-8-EP. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SW | output | Switch pin. Connect this pin to the output inductor and Schottky recirculating diode. Internal high-side N-channel MOSFET drain; swings between VIN and roughly -1 V during freewheel. Absolute rating -1.5 V to 76 V (LM3404HV). |
| 2 | BOOT | power_in | MOSFET drive bootstrap pin. Connect a 10-nF ceramic capacitor from this pin to SW to develop the gate-drive rail above VIN. Absolute rating BOOT-to-SW 14 V max. |
| 3 | DIM | input | Input for PWM dimming. Connect a logic-level PWM signal to this pin to enable and disable the internal power MOSFET and reduce the average LED array light output. Absolute rating -0.3 V to 7 V. |
| 4 | GND | power_in | Ground pin. Connect this pin to system ground; also serves as the return for internal control circuits. |
| 5 | CS | input | Current sense feedback pin. Set the current through the LED array by connecting a sense resistor from this pin to ground; regulated to 200-mV (typ) threshold. Overvoltage threshold 300 mV. Absolute rating -0.3 V to 7 V. |
| 6 | RON | input | On-time control pin. A resistor connected from this pin to VIN sets the regulator's controlled on-time (hysteretic constant on-time control). Also acts as a low-voltage shutdown when pulled low (VSD-TH ~0.7 V). |
| 7 | VCC | power_out | Output of the internal 7-V linear regulator that supplies gate drive and control circuits. Bypass this pin to ground with a minimum 0.1-µF ceramic capacitor with X5R or X7R dielectric. Absolute rating -0.3 V to 14 V. |
| 8 | VIN | power_in | Input voltage pin. Nominal operating input range is 6 V to 42 V (LM3404) or 6 V to 75 V (LM3404HV). Absolute rating -0.3 V to 76 V (HV). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SO-8-EP |
| Category | LED-drv |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
LM3404HVMRXLM3404HVMRXSDLM3404HVMRXSDX
CAD (KiCad official)
- Symbol:
LM3404HVMRX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8-EP (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (46 pp, sha256
3b94b6631f184de4, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).