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LGS4056HEP
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Legend Si Battery Management, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# LGS4056HEP++**Legend Si** · Battery Management · ESOP-8++LGS4056HEP from Legend Si, in a ESOP-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 | TEMP | input | Battery temperature detection input; charging pauses if voltage is below 45% VCC (over-temperature) or above 80% VCC (under-temperature); ground to disable monitoring. |+| 2 | PROG | input | Charging current programming input; set charging current with external 1% precision resistor to ground where I_BAT = 1000/R_PROG above 300mA or I_BAT = 900/R_PROG below 300mA. |+| 3 | GND | power_in | Chip ground. |+| 4 | VCC | power_in | Power supply input rated 5V nominal; requires minimum 10µF ceramic bypass capacitor to GND; withstands surge voltage up to 28V with internal 24V MOSFET. |+| 5 | BAT | power_out | Battery charging output with maximum programmable charging current to 1A; requires minimum 10µF capacitor to ground. |+| 6 | DONE | tri_state | Charging complete indicator; open-drain output pulls low when battery reaches full charge voltage of 4.2V. |+| 7 | CHRG | tri_state | Charging in progress indicator; open-drain output pulls low during constant current and constant voltage charging phases. |+| 8 | CE | input | Charging enable control input; high level enables charging, low level disables charging and reduces quiescent current to ≤40µA. |+| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Legend Si |+| Package | ESOP-8 |+| Category | Power Management (PMIC) |+| Pins | 9 |++## CAD (KiCad official)++- Symbol: `LGS4056HEP`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`+- 3D model: ESOP-8 (KiCad packages3D, STEP)+- 3D model files: `lgs4056hep-etched.step` / `lgs4056hep-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lgs4056hep.step` / `lgs4056hep.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Legend Si datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398710047678464) (16 pp, sha256 `ca42b5598b7bb228`, 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/lgs4056hep-datasheet.pdf)
page.jsonadded+150@@ -0,0 +1,150 @@+{+ "slug": "lgs4056hep",+ "version": "0.1.0",+ "type": "component",+ "description": "Legend Si Battery Management, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lgs4056hep",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lgs4056hep.kicad_sym",+ "lgs4056hep.kicad_mod",+ "lgs4056hep.glb",+ "lgs4056hep.step",+ "lgs4056hep.lbr",+ "docs/hero.png",+ "docs/lgs4056hep-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LGS4056HEP",+ "manufacturer": "Legend Si",+ "package": "ESOP-8",+ "pin_count": 9,+ "category": "Power Management (PMIC)",+ "subcategory": "Battery Management",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398710047678464",+ "parts": {+ "symbol": "lgs4056hep.kicad_sym",+ "footprint": "lgs4056hep.kicad_mod",+ "model_3d": "lgs4056hep-etched.glb",+ "model_3d_plain": "lgs4056hep.glb",+ "model_3d_step": "lgs4056hep-etched.step",+ "model_3d_step_plain": "lgs4056hep.step",+ "lbr": "lgs4056hep.lbr"+ },+ "distributor_links": {+ "lcsc": "C5123970"+ },+ "pins": [+ {+ "number": "1",+ "name": "TEMP",+ "type": "input",+ "description": "Battery temperature detection input; charging pauses if voltage is below 45% VCC (over-temperature) or above 80% VCC (under-temperature); ground to disable monitoring."+ },+ {+ "number": "2",+ "name": "PROG",+ "type": "input",+ "description": "Charging current programming input; set charging current with external 1% precision resistor to ground where I_BAT = 1000/R_PROG above 300mA or I_BAT = 900/R_PROG below 300mA."+ },+ {+ "number": "3",+ "name": "GND",+ "type": "power_in",+ "description": "Chip ground."+ },+ {+ "number": "4",+ "name": "VCC",+ "type": "power_in",+ "description": "Power supply input rated 5V nominal; requires minimum 10µF ceramic bypass capacitor to GND; withstands surge voltage up to 28V with internal 24V MOSFET."+ },+ {+ "number": "5",+ "name": "BAT",+ "type": "power_out",+ "description": "Battery charging output with maximum programmable charging current to 1A; requires minimum 10µF capacitor to ground."+ },+ {+ "number": "6",+ "name": "DONE",+ "type": "tri_state",+ "description": "Charging complete indicator; open-drain output pulls low when battery reaches full charge voltage of 4.2V."+ },+ {+ "number": "7",+ "name": "CHRG",+ "type": "tri_state",+ "description": "Charging in progress indicator; open-drain output pulls low during constant current and constant voltage charging phases."+ },+ {+ "number": "8",+ "name": "CE",+ "type": "input",+ "description": "Charging enable control input; high level enables charging, low level disables charging and reduces quiescent current to ≤40µA."+ },+ {+ "number": "9",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "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": [+ "exposed pad 9 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 16,+ "cost_usd": 0.2426,+ "at": "2026-09-18T05:08:48"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398710047678464",+ "pages": 16,+ "sha256": "ca42b5598b7bb228",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 9,+ "described": 9,+ "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]"+ }+}