component
TLC5973DR
Public Made by Adomby adom
Texas Instruments LED Drivers, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTLC5973DR
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 = 0.7VCC, VIL = 0.3VCC. |
| 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
Same part, different packaging or reel option.
TLC5973DR
CAD (KiCad official)
- Symbol:
TLC5973DR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tlc5973dr-etched.step/tlc5973dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tlc5973dr.step/tlc5973dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (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).