component
LM2670SX-3.3
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TO-263-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# LM2670SX-3.3++**Texas Instruments** · DC-DC Converters · TO-263-7++LM2670SX-3.3 from Texas Instruments, in a TO-263-7. 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 | Switch_output | output | Source of the internal high-side FET and the switch node; connect to the inductor and the external Schottky diode cathode, with the ground-switch voltage limited to -1 V DC (short negative excursions to -10 V for 20 ns are allowed) and an absolute maximum of VIN. |+| 2 | Input | input | Supply input connected to the high-side FET drain, which must be kept within 8 V to 40 V (absolute maximum 45 V) and bypassed by a capacitor placed close to this pin. |+| 3 | CBOOST/CB | input | Bootstrap capacitor connection that is wired between this pin and the Switch_output pin to drive the internal MOSFET gate above VIN; the BOOST pin voltage is limited to VSW + 8 V. |+| 4 | GND | power_in | Power ground pin connected to system ground, which must be kept as close as practical to the CIN and COUT ground returns. |+| 5 | SYNC | input | Synchronization input for an external clock that must be higher than the internal oscillator frequency and lie in the 280 kHz to 400 kHz range; when left open the regulator switches at its internal 225 kHz to 280 kHz oscillator frequency. |+| 6 | Feedback/FB | input | Feedback sense input that connects to the output for the fixed-output versions or to the midpoint of the feedback divider for the ADJ version, and it must be shielded from inductor flux coupling. |+| 7 | ON/OFF | input | Enable input where a level above 1.4 V turns the regulator on and a level below 0.8 V shuts it down to a standby current of 50 µA, with a driven high level not to exceed the 6 V absolute maximum and the pin left open when unused. |+| 8 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TO-263-7 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LM2670SX-3.3`+- Footprint: `Package_TO_SOT_SMD:TO-263-7_TabPin8`+- 3D model: TO-263-7 (KiCad packages3D, STEP)+- 3D model files: `lm2670sx-3-3-etched.step` / `lm2670sx-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2670sx-3-3.step` / `lm2670sx-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/lm2670) (42 pp, sha256 `0dc7dd45c243f2c8`, 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/lm2670sx-3-3-datasheet.pdf)
page.jsonadded+202@@ -0,0 +1,202 @@+{+ "slug": "lm2670sx-3-3",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments DC-DC Converters, TO-263-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm2670sx-3.3",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm2670sx-3-3.kicad_sym",+ "lm2670sx-3-3.kicad_mod",+ "lm2670sx-3-3.glb",+ "lm2670sx-3-3.step",+ "lm2670sx-3-3.lbr",+ "docs/hero.png",+ "docs/lm2670sx-3-3-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm2670sx-3-3-hero.glb",+ "lm2670sx-3-3-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM2670SX-3.3",+ "manufacturer": "Texas Instruments",+ "package": "TO-263-7",+ "pin_count": 8,+ "category": "Power Management (PMIC)",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm2670",+ "parts": {+ "symbol": "lm2670sx-3-3.kicad_sym",+ "footprint": "lm2670sx-3-3.kicad_mod",+ "model_3d": "lm2670sx-3-3-hero.glb",+ "model_3d_plain": "lm2670sx-3-3.glb",+ "model_3d_step": "lm2670sx-3-3-etched.step",+ "model_3d_step_plain": "lm2670sx-3-3.step",+ "lbr": "lm2670sx-3-3.lbr"+ },+ "distributor_links": {+ "lcsc": "C2868446",+ "digikey": "LM2670SX-3.3-ND",+ "mouser": "926-LM2670SX-33"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T16:47:55Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LM2670SX-3.3-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LM2670SX-33",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "Switch_output",+ "type": "output",+ "description": "Source of the internal high-side FET and the switch node; connect to the inductor and the external Schottky diode cathode, with the ground-switch voltage limited to -1 V DC (short negative excursions to -10 V for 20 ns are allowed) and an absolute maximum of VIN."+ },+ {+ "number": "2",+ "name": "Input",+ "type": "input",+ "description": "Supply input connected to the high-side FET drain, which must be kept within 8 V to 40 V (absolute maximum 45 V) and bypassed by a capacitor placed close to this pin."+ },+ {+ "number": "3",+ "name": "CBOOST/CB",+ "type": "input",+ "description": "Bootstrap capacitor connection that is wired between this pin and the Switch_output pin to drive the internal MOSFET gate above VIN; the BOOST pin voltage is limited to VSW + 8 V."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Power ground pin connected to system ground, which must be kept as close as practical to the CIN and COUT ground returns."+ },+ {+ "number": "5",+ "name": "SYNC",+ "type": "input",+ "description": "Synchronization input for an external clock that must be higher than the internal oscillator frequency and lie in the 280 kHz to 400 kHz range; when left open the regulator switches at its internal 225 kHz to 280 kHz oscillator frequency."+ },+ {+ "number": "6",+ "name": "Feedback/FB",+ "type": "input",+ "description": "Feedback sense input that connects to the output for the fixed-output versions or to the midpoint of the feedback divider for the ADJ version, and it must be shielded from inductor flux coupling."+ },+ {+ "number": "7",+ "name": "ON/OFF",+ "type": "input",+ "description": "Enable input where a level above 1.4 V turns the regulator on and a level below 0.8 V shuts it down to a standby current of 50 µA, with a driven high level not to exceed the 6 V absolute maximum and the pin left open when unused."+ },+ {+ "number": "8",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "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: Conflicting bootstrap capacitor value: Section 4 (Table 4-1) specifies a 100 nF capacitor between CB; The KTW (TO-263) drawing shows a thermal pad/tab that is not assigned a pin number. Table 4-1 states",+ "exposed pad 8 added from the footprint"+ ],+ "pages_sent": 20,+ "cost_usd": 0.1119,+ "at": "2026-10-08T16:47:37"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm2670",+ "pages": 42,+ "sha256": "0dc7dd45c243f2c8",+ "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": "lm2670sx-3-3.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 15,+ 10,+ 4.42+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "34b8121b216e7b6490402befe573a69b06919acafd33d6e8da88bd238574da52",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm2670sx-3-3-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 15,+ 10,+ 4.42+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "a4ac6f19e938ad97d194194b05dcd586dbcb3c618db0d355a2e747b683d7cfad",+ "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]"+ }+}