component
TLC5945PWPR
Public Made by Adomby adom
Texas Instruments LED Drivers, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+65@@ -0,0 +1,65 @@+# TLC5945PWPR++**Texas Instruments** · LED Drivers · TSSOP-28-EP++TLC5945PWPR from Texas Instruments, in a TSSOP-28-EP. 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 | GND | power_in | Ground. |+| 2 | BLANK | input | Active-high blanking input; forces all OUTn outputs off and resets GS counter when high. |+| 3 | XLAT | input | Level-triggered latch input; writes data from input shift register to GS or DC register when high, holds data when low. |+| 4 | SCLK | input | Serial data shift clock. |+| 5 | SIN | input | Serial data input. |+| 6 | MODE | input | Mode select input; low for grayscale mode, high for dot correction mode. |+| 7 | OUT0 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 8 | OUT1 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 9 | OUT2 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 10 | OUT3 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 11 | OUT4 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 12 | OUT5 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 13 | OUT6 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 14 | OUT7 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 15 | OUT8 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 16 | OUT9 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 17 | OUT10 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 18 | OUT11 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 19 | OUT12 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 20 | OUT13 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 21 | OUT14 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 22 | OUT15 | output | LED constant-current sink output; 0 mA to 80 mA. |+| 23 | XERR | tri_state | Open-drain error output; goes low when LED open detection (LOD) or thermal error flag (TEF) is detected. |+| 24 | SOUT | output | Serial data output. |+| 25 | GSCLK | input | Reference clock for grayscale PWM control. |+| 26 | TEST | input | Test pin; must be connected to VCC. |+| 27 | IREF | bidirectional | Reference current input terminal; external resistor sets maximum output current for all 16 channels. |+| 28 | VCC | power_in | Power supply voltage input; 3.0 V to 5.5 V. |+| 29 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-28-EP |+| Category | LED Drivers |+| Pins | 29 |++## CAD (KiCad official)++- Symbol: `TLC5945PWPR`+- Footprint: `Package_SO:TSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP2.85x6.7mm`+- 3D model: TSSOP-28-EP (KiCad packages3D, STEP)+- 3D model files: `tlc5945pwpr-etched.step` / `tlc5945pwpr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlc5945pwpr.step` / `tlc5945pwpr.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/tlc5945) (32 pp, sha256 `0172ff7c48182b94`, retrieved 2026-10-07, tier: lcsc)+- **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/tlc5945pwpr-datasheet.pdf)
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forces all OUTn outputs off and resets GS counter when high."+ },+ {+ "number": "3",+ "name": "XLAT",+ "type": "input",+ "description": "Level-triggered latch input; writes data from input shift register to GS or DC register when high, holds data when low."+ },+ {+ "number": "4",+ "name": "SCLK",+ "type": "input",+ "description": "Serial data shift clock."+ },+ {+ "number": "5",+ "name": "SIN",+ "type": "input",+ "description": "Serial data input."+ },+ {+ "number": "6",+ "name": "MODE",+ "type": "input",+ "description": "Mode select input; low for grayscale mode, high for dot correction mode."+ },+ {+ "number": "7",+ "name": "OUT0",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "8",+ "name": "OUT1",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "9",+ "name": "OUT2",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "10",+ "name": "OUT3",+ "type": "output",+ "description": "LED constant-current sink output; 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0 mA to 80 mA."+ },+ {+ "number": "19",+ "name": "OUT12",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "20",+ "name": "OUT13",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "21",+ "name": "OUT14",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "22",+ "name": "OUT15",+ "type": "output",+ "description": "LED constant-current sink output; 0 mA to 80 mA."+ },+ {+ "number": "23",+ "name": "XERR",+ "type": "tri_state",+ "description": "Open-drain error output; goes low when LED open detection (LOD) or thermal error flag (TEF) is detected."+ },+ {+ "number": "24",+ "name": "SOUT",+ "type": "output",+ "description": "Serial data output."+ },+ {+ "number": "25",+ "name": "GSCLK",+ "type": "input",+ "description": "Reference clock for grayscale PWM control."+ },+ {+ "number": "26",+ "name": "TEST",+ "type": "input",+ "description": "Test pin; must be connected to VCC."+ },+ {+ "number": "27",+ "name": "IREF",+ "type": "bidirectional",+ "description": "Reference current input terminal; external resistor sets maximum output current for all 16 channels."+ },+ {+ "number": "28",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply voltage input; 3.0 V to 5.5 V."+ },+ {+ "number": "29",+ "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": [+ "extractor flagged: Thermal pad (exposed die pad) shown in package diagram is not assigned a pin number; its electrical ",+ "exposed pad 29 added from the footprint"+ ],+ "pages_sent": 9,+ "cost_usd": 0.1318,+ "at": "2026-10-07T02:25:01"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tlc5945",+ "pages": 32,+ "sha256": "0172ff7c48182b94",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 29,+ "described": 29,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "tlc5945pwpr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.2,+ 9.7,+ 1.05+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tlc5945pwpr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.2,+ 9.7,+ 1.05+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "0f82144adf3258b8e5387ddaff2168efc645615841e7c5f9e312be6c68cc0b4d",+ "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]"+ }+}