component

TLC5973DR

Public Made by Adom

by adom

Texas Instruments LED Drivers, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs tlc5973dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers tlc5973dr: viewers · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md tlc5973dr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 15d ago
tlc5973dr-etched.fit.json tlc5973dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
tlc5973dr-etched.glb tlc5973dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
tlc5973dr-etched.step tlc5973dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
tlc5973dr.glb Publish 0.1.0 · Ray 1mo ago
tlc5973dr.kicad_mod Publish 0.1.0 · Ray 1mo ago
tlc5973dr.kicad_sym Publish 0.1.0 · Ray 1mo ago
tlc5973dr.lbr Publish 0.1.0 · Ray 1mo ago
tlc5973dr.step Publish 0.1.0 · Ray 1mo ago

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 = 0.7VCC, 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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlc5973dr.step / tlc5973dr.glb are 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).

Datasheet PDF