Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

main

Generated by kicad-footprint-generator · KiCad file format 20260206

Name	Last commit message	Last updated
docs	Publish 0.1.0 · Ray	1d ago
viewers	lm3409qmyx: viewers · Ray	1d ago
lm3409qmyx-etched.glb	lm3409qmyx: factory component page (tier=lcsc) · Ray	1d ago
lm3409qmyx-etched.step	lm3409qmyx: factory component page (tier=lcsc) · Ray	1d ago
lm3409qmyx-hero.glb	lm3409qmyx: hero GLB from the etched model (keeps the MPN mark) · Ray	11h ago
lm3409qmyx-hero.overlay.json	Publish 0.1.0 · Ray	1d ago
lm3409qmyx.glb	Publish 0.1.0 · Ray	1d ago
lm3409qmyx.kicad_mod	Publish 0.1.0 · Ray	1d ago
lm3409qmyx.kicad_sym	Publish 0.1.0 · Ray	1d ago
lm3409qmyx.lbr	Publish 0.1.0 · Ray	1d ago
lm3409qmyx.step	Publish 0.1.0 · Ray	1d ago
package.json	Publish 0.1.0 · Ray	1d ago
page.json	Set visibility: public · Ray	1d ago
README.md	Initial commit: component/lm3409qmyx · Ray	1d ago

LM3409QMYX

Texas Instruments · LED Drivers · HVSSOP-10-EP-0.5mm

LM3409QMYX from Texas Instruments, in a HVSSOP-10-EP-0.5mm. 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	UVLO	input	Input undervoltage lockout pin: connect to a resistor divider from VIN and GND; turn-on threshold is 1.24 V and turn-off hysteresis is provided by a 22 µA current source.
2	IADJ	input	Analog LED current adjust: apply 0 to 1.24 V, connect a resistor to GND, or leave open to set the current sense threshold voltage (IADJ current limited to ±5 mA continuous).
3	EN	input	Logic-level enable and PWM dimming input: a voltage above 1.74 V enables the device, a PWM signal dims it, and a voltage below 0.5 V selects low-power shutdown.
4	COFF	passive	Off-time programming pin: connect a resistor from VO and a capacitor to GND to set the off-time; COFF is rated -0.3 V to 4 V to GND with ±1 mA continuous current.
5	GND	power_in	System ground; connect to system ground.
6	PGATE	output	Gate drive output: connect to the gate of the external P-channel MOSFET; VIN to PGATE is rated -0.3 V to 7 V (9.5 V maximum for 100 ns).
7	CSN	input	Negative current sense input: connect to the negative side of the sense resistor, with VIN to CSN limited to -0.3 V to 0.3 V.
8	CSP	input	Positive current sense input: connect to the positive side of the sense resistor and also to VIN, with VIN to CSP limited to -0.3 V to 0.3 V.
9	VCC	power_out	VIN-referenced linear regulator output providing P-channel MOSFET drive power: connect at least a 1 µF ceramic capacitor to VIN; VIN to VCC is rated -0.3 V to 7 V.
10	VIN	power_in	Input voltage: connect to the input supply; for the LM3409-Q1 this is rated 6 V to 42 V.
11	DAP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	HVSSOP-10-EP-0.5mm
Category	LED Drivers
Pins	11

CAD (KiCad official)

Symbol: LM3409QMYX
Footprint: Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm
3D model: HVSSOP-10-EP-0.5mm (KiCad packages3D, STEP)
3D model files: lm3409qmyx-etched.step / lm3409qmyx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm3409qmyx.step / lm3409qmyx.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (47 pp, sha256 7745578a43302ee7, retrieved 2026-10-08, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF