component
LM2578AN
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Texas Instruments DC-DC Converters, PDIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# LM2578AN++**Texas Instruments** · DC-DC Converters · PDIP-8++LM2578AN from Texas Instruments, in a PDIP-8. 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 | -INPUT | input | Inverting comparator input with an internal 1.0V reference; the feedback input used for buck, boost and inverting configurations. |+| 2 | +INPUT | input | Non-inverting comparator input with an internal 1.0V reference; any external voltage applied above the reference must be limited to less than 5 mA. |+| 3 | OSC | passive | Oscillator pin where a single external timing capacitor sets the switching frequency from <1 Hz to 100 kHz, fOSC = 8x10^-5/C1. |+| 4 | GND | power_in | Ground; the emitter must not be pulled more than 1V below this pin (0.6V for TJ >= 100°C). |+| 5 | EMITTER | output | Emitter of the 750 mA output transistor, which must not be driven more than 1V below ground and is rated -1V to +50V. |+| 6 | COLLECTOR | output | Collector of the 750 mA output transistor, rated -0.3V to +50V with saturation voltage under 0.9V. |+| 7 | CURRENT LIMIT | input | Cycle-by-cycle current limit terminal referenced to either VIN or ground, activating when pulled 110 mV away from either. |+| 8 | VIN | power_in | Supply input operating from 2V to 40V, with total supply voltage rated at 50V maximum. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | PDIP-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LM2578AN`+- Footprint: `Package_DIP:DIP-8_W7.62mm`+- 3D model: PDIP-8 (KiCad packages3D, STEP)+- 3D model files: `lm2578an-etched.step` / `lm2578an-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2578an.step` / `lm2578an.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/lm2578a) (33 pp, sha256 `6b628780505f380b`, retrieved 2026-10-07, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/lm2578an-datasheet.pdf)
page.jsonadded+202@@ -0,0 +1,202 @@+{+ "slug": "lm2578an",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments DC-DC Converters, PDIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm2578an",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm2578an.kicad_sym",+ "lm2578an.kicad_mod",+ "lm2578an.glb",+ "lm2578an.step",+ "lm2578an.lbr",+ "docs/hero.png",+ "docs/lm2578an-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm2578an-hero.glb",+ "lm2578an-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM2578AN",+ "manufacturer": "Texas Instruments",+ "package": "PDIP-8",+ "pin_count": 8,+ "category": "Power Management (PMIC)",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm2578a",+ "parts": {+ "symbol": "lm2578an.kicad_sym",+ "footprint": "lm2578an.kicad_mod",+ "model_3d": "lm2578an-hero.glb",+ "model_3d_plain": "lm2578an.glb",+ "model_3d_step": "lm2578an-etched.step",+ "model_3d_step_plain": "lm2578an.step",+ "lbr": "lm2578an.lbr"+ },+ "distributor_links": {+ "lcsc": "C1355530",+ "digikey": "2156-LM2578AN-ND",+ "mouser": "926-LM2578AN"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T21:55:35Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "2156-LM2578AN-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "926-LM2578AN",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "-INPUT",+ "type": "input",+ "description": "Inverting comparator input with an internal 1.0V reference; the feedback input used for buck, boost and inverting configurations."+ },+ {+ "number": "2",+ "name": "+INPUT",+ "type": "input",+ "description": "Non-inverting comparator input with an internal 1.0V reference; any external voltage applied above the reference must be limited to less than 5 mA."+ },+ {+ "number": "3",+ "name": "OSC",+ "type": "passive",+ "description": "Oscillator pin where a single external timing capacitor sets the switching frequency from <1 Hz to 100 kHz, fOSC = 8x10^-5/C1."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Ground; the emitter must not be pulled more than 1V below this pin (0.6V for TJ >= 100°C)."+ },+ {+ "number": "5",+ "name": "EMITTER",+ "type": "output",+ "description": "Emitter of the 750 mA output transistor, which must not be driven more than 1V below ground and is rated -1V to +50V."+ },+ {+ "number": "6",+ "name": "COLLECTOR",+ "type": "output",+ "description": "Collector of the 750 mA output transistor, rated -0.3V to +50V with saturation voltage under 0.9V."+ },+ {+ "number": "7",+ "name": "CURRENT LIMIT",+ "type": "input",+ "description": "Cycle-by-cycle current limit terminal referenced to either VIN or ground, activating when pulled 110 mV away from either."+ },+ {+ "number": "8",+ "name": "VIN",+ "type": "power_in",+ "description": "Supply input operating from 2V to 40V, with total supply voltage rated at 50V maximum."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-sonnet-5-5",+ "primary_mode": "text+vision",+ "consensus_model": "claude-opus-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The datasheet gives no pin types. They were assigned from pin functions: OSC as passive, and EMITTER",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 33,+ "cost_usd": 0.6721,+ "at": "2026-10-07T21:55:19"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm2578a",+ "pages": 33,+ "sha256": "6b628780505f380b",+ "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"+ },+ "models_3d": [+ {+ "file": "lm2578an.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "body on z = 0, through-hole leads below",+ "extents_mm": [+ 7.874,+ 9.27,+ 6.98+ ],+ "zmin_mm": -3.3,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm2578an-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "body on z = 0, through-hole leads below",+ "extents_mm": [+ 7.874,+ 9.27,+ 6.98+ ],+ "zmin_mm": -3.3,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "ab890eb00676eba64e5d24005edabd5a2ebc3043d05bc79e1fea85d2714e829a",+ "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]"+ }+}