component
LM2574HVM-3.3
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-14-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+51@@ -0,0 +1,51 @@+# LM2574HVM-3.3++**Texas Instruments** · DC-DC Converters · SOIC-14-300mil++LM2574HVM-3.3 from Texas Instruments, in a SOIC-14-300mil. 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 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 2 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 3 | FB | input | Feedback sense input: connect to the midpoint of the feedback divider to set VOUT on the ADJ version, or connect directly to the output capacitor on a fixed-output version such as the 3.3 V part. |+| 4 | SIG_GND | power_in | Signal ground reference for the internal references and logic; connect to system ground. |+| 5 | ON/OFF | input | Enable input: high = OFF and low = ON, so connect to GND to enable the regulator; do not leave this pin floating. The datasheet specifies an ON/OFF input voltage of -0.3 V to VIN. |+| 6 | PWR_GND | power_in | Power ground; connect to system ground and to the ground pins of CIN and COUT, keeping the path to CIN as short as possible. |+| 7 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 8 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 9 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 10 | VIN | power_in | Supply input to the collector of the high-side transistor; connect to the supply and the input bypass capacitor CIN with a short path to PWR_GND. Recommended supply for the HV version is up to 60 V, with an absolute maximum of 63 V. |+| 11 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 12 | OUTPUT | output | Emitter of the power transistor and the switching node; connect to the inductor and the cathode of the external catch diode. Steady-state voltage to ground is rated at -1 V minimum. |+| 13 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |+| 14 | NC | unconnected | No internal connection, but must be soldered to the PCB for best heat transfer. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-14-300mil |+| Category | Power Management (PMIC) |+| Pins | 14 |++## CAD (KiCad official)++- Symbol: `LM2574HVM-3.3`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14-300mil (KiCad packages3D, STEP)+- 3D model files: `lm2574hvm-3-3-etched.step` / `lm2574hvm-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2574hvm-3-3.step` / `lm2574hvm-3-3.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/lm2574) (42 pp, sha256 `61a9f44cec6689e8`, retrieved 2026-10-08, 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-5-5` (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/lm2574hvm-3-3-datasheet.pdf)
page.jsonadded+237@@ -0,0 +1,237 @@+{+ "slug": "lm2574hvm-3-3",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments DC-DC Converters, SOIC-14-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm2574hvm-3.3",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm2574hvm-3-3.kicad_sym",+ "lm2574hvm-3-3.kicad_mod",+ "lm2574hvm-3-3.glb",+ "lm2574hvm-3-3.step",+ "lm2574hvm-3-3.lbr",+ "docs/hero.png",+ "docs/lm2574hvm-3-3-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm2574hvm-3-3-hero.glb",+ "lm2574hvm-3-3-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM2574HVM-3.3",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-14-300mil",+ "pin_count": 14,+ "category": "Power Management (PMIC)",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm2574",+ "parts": {+ "symbol": "lm2574hvm-3-3.kicad_sym",+ "footprint": "lm2574hvm-3-3.kicad_mod",+ "model_3d": "lm2574hvm-3-3-hero.glb",+ "model_3d_plain": "lm2574hvm-3-3.glb",+ "model_3d_step": "lm2574hvm-3-3-etched.step",+ "model_3d_step_plain": "lm2574hvm-3-3.step",+ "lbr": "lm2574hvm-3-3.lbr"+ },+ "distributor_links": {+ "lcsc": "C2868482",+ "digikey": "LM2574HVM-3.3-ND",+ "mouser": "926-LM2574HVM-33"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T19:40:32Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LM2574HVM-3.3-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LM2574HVM-33",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "2",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "3",+ "name": "FB",+ "type": "input",+ "description": "Feedback sense input: connect to the midpoint of the feedback divider to set VOUT on the ADJ version, or connect directly to the output capacitor on a fixed-output version such as the 3.3 V part."+ },+ {+ "number": "4",+ "name": "SIG_GND",+ "type": "power_in",+ "description": "Signal ground reference for the internal references and logic; connect to system ground."+ },+ {+ "number": "5",+ "name": "ON/OFF",+ "type": "input",+ "description": "Enable input: high = OFF and low = ON, so connect to GND to enable the regulator; do not leave this pin floating. The datasheet specifies an ON/OFF input voltage of -0.3 V to VIN."+ },+ {+ "number": "6",+ "name": "PWR_GND",+ "type": "power_in",+ "description": "Power ground; connect to system ground and to the ground pins of CIN and COUT, keeping the path to CIN as short as possible."+ },+ {+ "number": "7",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "8",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "9",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "10",+ "name": "VIN",+ "type": "power_in",+ "description": "Supply input to the collector of the high-side transistor; connect to the supply and the input bypass capacitor CIN with a short path to PWR_GND. Recommended supply for the HV version is up to 60 V, with an absolute maximum of 63 V."+ },+ {+ "number": "11",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "12",+ "name": "OUTPUT",+ "type": "output",+ "description": "Emitter of the power transistor and the switching node; connect to the inductor and the cathode of the external catch diode. Steady-state voltage to ground is rated at -1 V minimum."+ },+ {+ "number": "13",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ },+ {+ "number": "14",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection, but must be soldered to the PCB for best heat transfer."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The SOIC-14 pin map on page 3 is garbled in text extraction. Pin numbers were taken from the 14-pin ; The datasheet classifies VIN as I (input). It is typed here as power_in because it is the supply inp; The datasheet's Electrical Characteristics and 3.3 V-specific specs are not in the pages provided, s"+ ],+ "pages_sent": 12,+ "cost_usd": 0.0843,+ "at": "2026-10-08T19:39:46"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm2574",+ "pages": 42,+ "sha256": "61a9f44cec6689e8",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "lm2574hvm-3-3.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 8.7,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm2574hvm-3-3-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 8.7,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "95b0c862713898092b874872cc9d52e0382447cfe13cf13e4b05d59604ac71b4",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}