component
LP3943ISQ
Public Made by Adomby adom
Texas Instruments LED Drivers, WQFN-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 @@+# LP3943ISQ++**Texas Instruments** · LED Drivers · WQFN-24-EP(4x4)++LP3943ISQ from Texas Instruments, in a WQFN-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 | LED0 | output | Output of LED0 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 2 | LED1 | output | Output of LED1 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 3 | LED2 | output | Output of LED2 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 4 | LED3 | output | Output of LED3 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 5 | LED4 | output | Output of LED4 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 6 | LED5 | output | Output of LED5 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 7 | LED6 | output | Output of LED6 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 8 | LED7 | output | Output of LED7 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 9 | GND | power_in | Ground connection; internally tied to exposed thermal pad for mechanical and thermal performance. |+| 10 | LED8 | output | Output of LED8 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 11 | LED9 | output | Output of LED9 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 12 | LED10 | output | Output of LED10 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 13 | LED11 | output | Output of LED11 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 14 | LED12 | output | Output of LED12 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 15 | LED13 | output | Output of LED13 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 16 | LED14 | output | Output of LED14 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 17 | LED15 | output | Output of LED15 Driver; open-drain low-side switch with maximum 25mA sink current per pin. |+| 18 | RST | input | Active-low reset input; minimum 10ns pulse width resets device to default state. |+| 19 | SCL | input | I2C interface clock line input with maximum frequency 400kHz and input voltage range -0.5V to 5.5V. |+| 20 | SDA | bidirectional | I2C interface serial data line, open-drain bidirectional with output voltage 0 to 0.2VDD and sink current 3-6.5mA. |+| 21 | VDD | power_in | Power supply input with recommended operating range 2.3V to 5.5V and quiescent current 350-550µA. |+| 22 | A0 | input | I2C slave address selection input 0; input voltage range -0.5V to 5.5V. |+| 23 | A1 | input | I2C slave address selection input 1; input voltage range -0.5V to 5.5V. |+| 24 | A2 | input | I2C slave address selection input 2; input voltage range -0.5V to 5.5V. |+| 25 | Exposed Pad | power_in | Thermal pad internally tied to GND; must be soldered to printed circuit board for thermal and mechanical performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-24-EP(4x4) |+| Category | LED Drivers |+| Pins | 25 |++## CAD (KiCad official)++- Symbol: `LP3943ISQ`+- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`+- 3D model: WQFN-24-EP(4x4) (KiCad packages3D, STEP)+- 3D model files: `lp3943isq-etched.step` / `lp3943isq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp3943isq.step` / `lp3943isq.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/lp3943) (26 pp, sha256 `d6d0a0999dfdfaff`, retrieved 2026-10-01, 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/lp3943isq-datasheet.pdf)
page.jsonadded+261@@ -0,0 +1,261 @@+{+ "slug": "lp3943isq",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments LED Drivers, WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "led drivers",+ "lp3943isq",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lp3943isq.kicad_sym",+ "lp3943isq.kicad_mod",+ "lp3943isq.glb",+ "lp3943isq.step",+ "lp3943isq.lbr",+ "docs/hero.png",+ "docs/lp3943isq-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LP3943ISQ",+ "manufacturer": "Texas Instruments",+ "package": "WQFN-24-EP(4x4)",+ "pin_count": 25,+ "category": "LED Drivers",+ "subcategory": "LED Drivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lp3943",+ "parts": {+ "symbol": "lp3943isq.kicad_sym",+ "footprint": "lp3943isq.kicad_mod",+ "model_3d": "lp3943isq-etched.glb",+ "model_3d_plain": "lp3943isq.glb",+ "model_3d_step": "lp3943isq-etched.step",+ "model_3d_step_plain": "lp3943isq.step",+ "lbr": "lp3943isq.lbr"+ },+ "distributor_links": {+ "lcsc": "C2679146",+ "digikey": "LP3943ISQTR-ND",+ "mouser": "926-LP3943ISQ"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T01:53:08Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LP3943ISQTR-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LP3943ISQ",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "LED0",+ "type": "output",+ "description": "Output of LED0 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "2",+ "name": "LED1",+ "type": "output",+ "description": "Output of LED1 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "3",+ "name": "LED2",+ "type": "output",+ "description": "Output of LED2 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "4",+ "name": "LED3",+ "type": "output",+ "description": "Output of LED3 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "5",+ "name": "LED4",+ "type": "output",+ "description": "Output of LED4 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "6",+ "name": "LED5",+ "type": "output",+ "description": "Output of LED5 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "7",+ "name": "LED6",+ "type": "output",+ "description": "Output of LED6 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "8",+ "name": "LED7",+ "type": "output",+ "description": "Output of LED7 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection; internally tied to exposed thermal pad for mechanical and thermal performance."+ },+ {+ "number": "10",+ "name": "LED8",+ "type": "output",+ "description": "Output of LED8 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "11",+ "name": "LED9",+ "type": "output",+ "description": "Output of LED9 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "12",+ "name": "LED10",+ "type": "output",+ "description": "Output of LED10 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "13",+ "name": "LED11",+ "type": "output",+ "description": "Output of LED11 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "14",+ "name": "LED12",+ "type": "output",+ "description": "Output of LED12 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "15",+ "name": "LED13",+ "type": "output",+ "description": "Output of LED13 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "16",+ "name": "LED14",+ "type": "output",+ "description": "Output of LED14 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "17",+ "name": "LED15",+ "type": "output",+ "description": "Output of LED15 Driver; open-drain low-side switch with maximum 25mA sink current per pin."+ },+ {+ "number": "18",+ "name": "RST",+ "type": "input",+ "description": "Active-low reset input; minimum 10ns pulse width resets device to default state."+ },+ {+ "number": "19",+ "name": "SCL",+ "type": "input",+ "description": "I2C interface clock line input with maximum frequency 400kHz and input voltage range -0.5V to 5.5V."+ },+ {+ "number": "20",+ "name": "SDA",+ "type": "bidirectional",+ "description": "I2C interface serial data line, open-drain bidirectional with output voltage 0 to 0.2VDD and sink current 3-6.5mA."+ },+ {+ "number": "21",+ "name": "VDD",+ "type": "power_in",+ "description": "Power supply input with recommended operating range 2.3V to 5.5V and quiescent current 350-550µA."+ },+ {+ "number": "22",+ "name": "A0",+ "type": "input",+ "description": "I2C slave address selection input 0; input voltage range -0.5V to 5.5V."+ },+ {+ "number": "23",+ "name": "A1",+ "type": "input",+ "description": "I2C slave address selection input 1; input voltage range -0.5V to 5.5V."+ },+ {+ "number": "24",+ "name": "A2",+ "type": "input",+ "description": "I2C slave address selection input 2; input voltage range -0.5V to 5.5V."+ },+ {+ "number": "25",+ "name": "Exposed Pad",+ "type": "power_in",+ "description": "Thermal pad internally tied to GND; must be soldered to printed circuit board for thermal and mechanical performance."+ }+ ],+ "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: Exposed pad pin number (25) is shown in the package outline diagram on page 23 but not explicitly nu"+ ],+ "pages_sent": 26,+ "cost_usd": 0.1877,+ "at": "2026-10-01T01:52:53"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lp3943",+ "pages": 26,+ "sha256": "d6d0a0999dfdfaff",+ "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"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}