TM1809 from TM Shenzhen Titan Micro Elec, in a SOP-14. 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	VDD	power_in	Logic supply, DC 5 V +/-10%. Internal 5 V Zener shunt regulator allows 6-24 V raw supply through an external series resistor (330 Ω @ 6 V, 1.2 kΩ @ 9 V, 2.4 kΩ @ 12 V, 6.8 kΩ @ 24 V). Absolute max -0.5 to +7.0 V at the pin.
2	SET	input	Data rate select. Tie to VDD for low-speed mode (400 kbps / fosc 400 kHz); leave floating for high-speed mode (800 kbps / fosc 800 kHz).
3	DO	output	Cascaded serial data output. After receiving 3x24 bit for this chip, subsequent 72-bit frames are reshaped and forwarded to the next TM1809's DIN. VOH >= VDD-0.5 V at IOH=-6 mA, VOL <= 0.5 V at IOL=10 mA.
4	3OUTR	output	Channel 3 Red PWM open-drain output. Sinks LED current with 256-level PWM (1.3 ms typical period). RON ~13-14 Ω @ VDD=5 V, IOLC 40-45 mA @ VOUT=0.5 V, IOUT(DC) max 60 mA, VOUT rated to 24 V (abs max 30 V).
5	3OUTG	output	Channel 3 Green PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
6	3OUTB	output	Channel 3 Blue PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
7	GND	power_in	System ground reference for logic and LED return currents.
8	2OUTB	output	Channel 2 Blue PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
9	2OUTG	output	Channel 2 Green PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
10	2OUTR	output	Channel 2 Red PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
11	1OUTB	output	Channel 1 Blue PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
12	1OUTG	output	Channel 1 Green PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
13	1OUTR	output	Channel 1 Red PWM open-drain output. Same electrical spec as other OUT channels (RON ~13-14 Ω, 40-45 mA sink @ 0.5 V, 24 V rated).
14	DIN	input	Single-wire serial data input using return-to-zero encoding. Accepts 72-bit RGB frames (3 pixels x 24 bit, MSB first). Max clock 800 kHz; VIH >= 3.8 V, VIL <= 1.5 V; input current +/-1 uA; CI ~15 pF.

Key specifications

Parameter	Value
Manufacturer	TM Shenzhen Titan Micro Elec
Package	SOP-14
Category	LED-drv
Pins	14

CAD (KiCad official)

Symbol: TM1809
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tm1809.step`	195 KB	You want the bare part, or you mark your own boards.
`tm1809-etched.step`	1.8 MB	You want the part with `TM1809` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 460 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: TM Shenzhen Titan Micro Elec datasheet (10 pp, sha256 104725a73d23dff1, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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).

Datasheet PDF