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TLC6946RGER
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Texas Instruments LED Drivers, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+62@@ -0,0 +1,62 @@+# TLC6946RGER++**Texas Instruments** · LED Drivers · VQFN-24-EP(4x4)++TLC6946RGER from Texas Instruments, in a VQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | LAT | input | Data latch input; the falling edge of LAT latches data from the common shift register into the GS data memory or the function control register. |+| 2 | OUT0 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 3 | OUT1 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 4 | OUT2 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 5 | OUT3 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 6 | OUT4 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 7 | OUT5 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 8 | OUT6 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 9 | OUT7 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 10 | GND | power_in | Power-ground reference; must be connected together with the thermal pad on the board. |+| 11 | OUT8 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 12 | OUT9 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 13 | OUT10 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 14 | OUT11 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 15 | OUT12 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 16 | OUT13 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 17 | OUT14 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 18 | OUT15 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |+| 19 | SOUT | output | Serial data output of the internal 16-bit common shift register; the MSB of the shift register appears on SOUT. |+| 20 | GCLK | input | Grayscale PWM reference clock input (max 33 MHz, 25 MHz in dual-edge operation); each rising edge increments the GS counter in default mode, and dual-edge operation is supported. |+| 21 | IREF | input | Sets the maximum constant-current value via an external resistor to GND placed close to the device; connecting it directly to GND forces all outputs off. |+| 22 | VCC | power_in | Power supply pin, 3 V to 5.5 V recommended operating range. |+| 23 | SIN | input | Serial data input of the internal 16-bit common shift register; the LSB is set to the SIN level on each SCLK rising edge. |+| 24 | SCLK | input | Serial clock input (max 33 MHz); SIN data is shifted into the LSB of the 16-bit common shift register on each rising edge, shifting existing data toward the MSB. |+| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-24-EP(4x4) |+| Category | LED Drivers |+| Pins | 25 |++## CAD (KiCad official)++- Symbol: `TLC6946RGER`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`+- 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)+- 3D model files: `tlc6946rger-etched.step` / `tlc6946rger-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlc6946rger.step` / `tlc6946rger.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tlc6946) (35 pp, sha256 `e4d3df4565501ba1`, retrieved 2026-10-07, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tlc6946rger-datasheet.pdf)
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the falling edge of LAT latches data from the common shift register into the GS data memory or the function control register."+ },+ {+ "number": "2",+ "name": "OUT0",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "3",+ "name": "OUT1",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "4",+ "name": "OUT2",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "5",+ "name": "OUT3",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "6",+ "name": "OUT4",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "7",+ "name": "OUT5",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "8",+ "name": "OUT6",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "9",+ "name": "OUT7",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Power-ground reference; must be connected together with the thermal pad on the board."+ },+ {+ "number": "11",+ "name": "OUT8",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "12",+ "name": "OUT9",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "13",+ "name": "OUT10",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "14",+ "name": "OUT11",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "15",+ "name": "OUT12",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "16",+ "name": "OUT13",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "17",+ "name": "OUT14",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "18",+ "name": "OUT15",+ "type": "output",+ "description": "Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output."+ },+ {+ "number": "19",+ "name": "SOUT",+ "type": "output",+ "description": "Serial data output of the internal 16-bit common shift register; the MSB of the shift register appears on SOUT."+ },+ {+ "number": "20",+ "name": "GCLK",+ "type": "input",+ "description": "Grayscale PWM reference clock input (max 33 MHz, 25 MHz in dual-edge operation); each rising edge increments the GS counter in default mode, and dual-edge operation is supported."+ },+ {+ "number": "21",+ "name": "IREF",+ "type": "input",+ "description": "Sets the maximum constant-current value via an external resistor to GND placed close to the device; connecting it directly to GND forces all outputs off."+ },+ {+ "number": "22",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply pin, 3 V to 5.5 V recommended operating range."+ },+ {+ "number": "23",+ "name": "SIN",+ "type": "input",+ "description": "Serial data input of the internal 16-bit common shift register; the LSB is set to the SIN level on each SCLK rising edge."+ },+ {+ "number": "24",+ "name": "SCLK",+ "type": "input",+ "description": "Serial clock input (max 33 MHz); SIN data is shifted into the LSB of the 16-bit common shift register on each rising edge, shifting existing data toward the MSB."+ },+ {+ "number": "25",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "exposed pad 25 added from the footprint"+ ],+ "pages_sent": 9,+ "cost_usd": 0.1491,+ "at": "2026-10-07T01:50:58"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tlc6946",+ "pages": 35,+ "sha256": "e4d3df4565501ba1",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 25,+ "described": 25,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "tlc6946rger.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4,+ 4,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tlc6946rger-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4,+ 4,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "cf8faa21c447a439ee73c089a818345af7592260fea01f1050855f57284fc303",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}