TM1814

@@ -0,0 +1,44 @@+# TM1814++**TM Shenzhen Titan Micro Elec TM1814 TA2105B** · LED Drivers · SOP-8++TM1814 from TM Shenzhen Titan Micro Elec TM1814 TA2105B, in a SOP-8. 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 | OUTR | output | N-channel open-drain constant-current output for the Red LED channel. Programmable 6.5-38 mA in 64 steps and 256-level PWM. OUT pin withstands up to 32V; recommended operating voltage 1.2-3V when on. |+| 2 | OUTG | output | N-channel open-drain constant-current output for the Green LED channel. Programmable 6.5-38 mA in 64 steps and 256-level PWM. OUT pin withstands up to 32V. |+| 3 | OUTB | output | N-channel open-drain constant-current output for the Blue LED channel. Programmable 6.5-38 mA in 64 steps and 256-level PWM. OUT pin withstands up to 32V. |+| 4 | GND | power_in | Ground reference (电源地). Common return for logic and OUT sink currents. |+| 5 | DO | output | Single-wire cascaded data output to the DIN of the next TM1814 in the chain. Reshaped/regenerated so cascades do not attenuate the signal. Recommended to series a 100Ω protection resistor. |+| 6 | DIN | input | Single-wire serial data input from the controller (or DO of the previous chip). Data rate 800 kHz external / 500 kHz internal mode. VIH ≥ 3.5V @ VDD=5V; recommended to series a 100Ω protection resistor. |+| 7 | VDD | power_in | Logic supply (电源正极). Internal 5V shunt regulator allows operation from a 6-24V rail through a series resistor (e.g. 50Ω @ 6V, 350Ω @ 9V, 650Ω @ 12V, 1.8kΩ @ 24V). Recommended VDD 4.5-6.5V; absolute max 7.0V. Add 104 (100nF) decoupling close to the pin. |+| 8 | OUTW | output | N-channel open-drain constant-current output for the White LED channel. Programmable 6.5-38 mA in 64 steps and 256-level PWM. OUT pin withstands up to 32V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TM Shenzhen Titan Micro Elec TM1814 TA2105B |+| Package | SOP-8 |+| Category | LED-drv |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `TM1814`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [TM Shenzhen Titan Micro Elec TM1814 TA2105B datasheet](docs/tm1814-datasheet.pdf) (10 pp, sha256 `4287ea6b25920461`, 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](docs/tm1814-datasheet.pdf)

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