component
LM74502DDFR
Public Made by Adomby adom
Texas Instruments Power Distribution Switches, TSOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+45@@ -0,0 +1,45 @@+# LM74502DDFR++**Texas Instruments** · Power Distribution Switches · TSOT-23-8++LM74502DDFR from Texas Instruments, in a TSOT-23-8. 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 | EN/UVLO | input | Enable/UVLO input; voltage above 1.24V (typical rising threshold) enables gate driver and charge pump; pulling below 0.64V (typical) enters low-IQ shutdown mode drawing 1µA. |+| 2 | GND | power_in | Ground reference pin. |+| 3 | N.C | unconnected | No connection pin. |+| 4 | VCAP | output | Charge pump output for external gate drive; connect 0.1-0.22µF external capacitor; provides approximately 13V above VS with hysteresis between 11.6V and 12.4V. |+| 5 | VS | power_in | Input power supply to controller; operates 3.2V to 65V with 3.9V power-on-reset rising threshold and -65V reverse voltage withstanding; requires 100nF bypass capacitor to GND. |+| 6 | GATE | output | Gate drive output for external N-channel MOSFET; 60µA peak source current (LM74502) or 11mA (LM74502H), 2.37A peak sink current, 0-15V gate-to-source voltage rating. |+| 7 | OV | input | Overvoltage protection threshold input; connect resistor divider from input supply to OV to ground to set threshold; rising comparator reference 1.25V, falling reference 1.14V. |+| 8 | SRC | input | Source reference point for external back-to-back N-channel MOSFETs or high-side MOSFET source; withstands -65V to +65V voltage excursions for reverse polarity protection. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSOT-23-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LM74502DDFR`+- Footprint: `Package_TO_SOT_SMD:TSOT-23-8`+- 3D model: TSOT-23-8 (KiCad packages3D, STEP)+- 3D model files: `lm74502ddfr-etched.step` / `lm74502ddfr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm74502ddfr.step` / `lm74502ddfr.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/ds/symlink/lm74502.pdf) (30 pp, sha256 `32a78dac63f4406b`, retrieved 2026-09-18, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/lm74502ddfr-datasheet.pdf)
page.jsonadded+141@@ -0,0 +1,141 @@+{+ "slug": "lm74502ddfr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Power Distribution Switches, TSOT-23-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm74502ddfr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm74502ddfr.kicad_sym",+ "lm74502ddfr.kicad_mod",+ "lm74502ddfr.glb",+ "lm74502ddfr.step",+ "lm74502ddfr.lbr",+ "docs/hero.png",+ "docs/lm74502ddfr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM74502DDFR",+ "manufacturer": "Texas Instruments",+ "package": "TSOT-23-8",+ "pin_count": 8,+ "category": "Power Management (PMIC)",+ "subcategory": "Power Distribution Switches",+ "datasheet": "https://www.ti.com/cn/lit/ds/symlink/lm74502.pdf",+ "parts": {+ "symbol": "lm74502ddfr.kicad_sym",+ "footprint": "lm74502ddfr.kicad_mod",+ "model_3d": "lm74502ddfr-etched.glb",+ "model_3d_plain": "lm74502ddfr.glb",+ "model_3d_step": "lm74502ddfr-etched.step",+ "model_3d_step_plain": "lm74502ddfr.step",+ "lbr": "lm74502ddfr.lbr"+ },+ "distributor_links": {+ "lcsc": "C3236215"+ },+ "pins": [+ {+ "number": "1",+ "name": "EN/UVLO",+ "type": "input",+ "description": "Enable/UVLO input; voltage above 1.24V (typical rising threshold) enables gate driver and charge pump; pulling below 0.64V (typical) enters low-IQ shutdown mode drawing 1µA."+ },+ {+ "number": "2",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference pin."+ },+ {+ "number": "3",+ "name": "N.C",+ "type": "unconnected",+ "description": "No connection pin."+ },+ {+ "number": "4",+ "name": "VCAP",+ "type": "output",+ "description": "Charge pump output for external gate drive; connect 0.1-0.22µF external capacitor; provides approximately 13V above VS with hysteresis between 11.6V and 12.4V."+ },+ {+ "number": "5",+ "name": "VS",+ "type": "power_in",+ "description": "Input power supply to controller; operates 3.2V to 65V with 3.9V power-on-reset rising threshold and -65V reverse voltage withstanding; requires 100nF bypass capacitor to GND."+ },+ {+ "number": "6",+ "name": "GATE",+ "type": "output",+ "description": "Gate drive output for external N-channel MOSFET; 60µA peak source current (LM74502) or 11mA (LM74502H), 2.37A peak sink current, 0-15V gate-to-source voltage rating."+ },+ {+ "number": "7",+ "name": "OV",+ "type": "input",+ "description": "Overvoltage protection threshold input; connect resistor divider from input supply to OV to ground to set threshold; rising comparator reference 1.25V, falling reference 1.14V."+ },+ {+ "number": "8",+ "name": "SRC",+ "type": "input",+ "description": "Source reference point for external back-to-back N-channel MOSFETs or high-side MOSFET source; withstands -65V to +65V voltage excursions for reverse polarity protection."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 30,+ "cost_usd": 0.2479,+ "at": "2026-09-18T02:33:57"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/ds/symlink/lm74502.pdf",+ "pages": 30,+ "sha256": "32a78dac63f4406b",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "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]"+ }+}