TLC5973DR

@@ -0,0 +1,47 @@+# TLC5973DR++**Texas Instruments** · LED Drivers · SOIC-8++TLC5973DR from Texas Instruments, in a SOIC-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 | OUT0 | output | Constant sink current driver output 0. Sinks up to 50 mA (VCC > 4.0 V) programmed by RIREF. OUT pins can withstand up to 21 V; multiple outputs may be tied in parallel to increase drive current. |+| 2 | OUT1 | output | Constant sink current driver output 1. Sinks up to 50 mA (VCC > 4.0 V) programmed by RIREF. OUT pins can withstand up to 21 V; multiple outputs may be tied in parallel to increase drive current. |+| 3 | OUT2 | output | Constant sink current driver output 2. Sinks up to 50 mA (VCC > 4.0 V) programmed by RIREF. OUT pins can withstand up to 21 V; multiple outputs may be tied in parallel to increase drive current. |+| 4 | GND | power_in | Power ground / network ground reference for all voltages. |+| 5 | SDO | output | Serial data output for cascading devices. Push-pull CMOS output (VOH = VCC-0.4 V at IOH = -2 mA, VOL = 0.4 V at IOL = 2 mA). Connects to SDI of the next TLC5973 in the daisy chain. |+| 6 | SDI | input | Serial data input for the single-wire EasySet interface (up to 3 Mbps). Internally pulled down to GND via a 1-MOhm (typ) resistor. VIH = 0.7*VCC, VIL = 0.3*VCC. |+| 7 | IREF | bidirectional | Output current programming pin. Connect an external resistor RIREF between IREF and GND to set the constant sink current for OUT0-OUT2 (VIREF = 1.20 V typ; IOUT ≈ 43.4 * 1.20/RIREF mA). Place the resistor close to the device. |+| 8 | VCC | power_in | Power-supply voltage input. 3.0 V to 5.5 V in no-shunt-regulator mode, up to 6.0 V with the integrated shunt regulator (IREG up to 20 mA). Absolute maximum 7.0 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | LED-drv |+| Pins | 8 |++## Ordering variants++- `TLC5973DR`++## CAD (KiCad official)++- Symbol: `TLC5973DR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tlc5973.pdf) (37 pp, sha256 `8b8bccb8e27ddc91`, 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).++[Datasheet PDF](docs/tlc5973dr-datasheet.pdf)

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