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INA253A3IPWR
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Texas Instruments Current Sense Amplifiers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# INA253A3IPWR++**Texas Instruments** · Current Sense Amplifiers · TSSOP-20++INA253A3IPWR from Texas Instruments, in a TSSOP-20. 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 | IS- | input | Analog input connected to the load side of the internal shunt; connect to the load. |+| 2 | IS- | input | Analog input connected to the load side of the internal shunt; connect to the load. |+| 3 | IS- | input | Analog input connected to the load side of the internal shunt; connect to the load. |+| 4 | SH- | output | Kelvin connection to the internal shunt; connect to IN- if no filtering is needed. |+| 5 | IN- | input | Voltage input from the load side of the shunt resistor. |+| 6 | GND | power_in | Ground reference for the device. |+| 7 | DNC1 | unconnected | Do not connect this pin to any potential; leave it floating. |+| 8 | NC | unconnected | No connect. |+| 9 | VS | power_in | Analog power supply, 2.7 V to 5.5 V. |+| 10 | REF2 | input | Reference voltage 2 input, 0 V to VS; do not connect to any voltage below GND or above VS. |+| 11 | REF1 | input | Reference voltage 1 input, 0 V to VS; do not connect to any voltage below GND or above VS. |+| 12 | NC | unconnected | No connect. |+| 13 | OUT | output | Analog output voltage. |+| 14 | DNC2 | unconnected | Do not connect this pin to any potential; leave it floating. |+| 15 | NC | unconnected | Reserved analog pin; the datasheet says to connect it to ground. |+| 16 | IN+ | input | Voltage input from the supply side of the shunt resistor. |+| 17 | SH+ | output | Kelvin connection to the internal shunt; connect to IN+ if no filtering is needed. |+| 18 | IS+ | input | Analog input; connect to the supply. |+| 19 | IS+ | input | Analog input; connect to the supply. |+| 20 | IS+ | input | Analog input; connect to the supply. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-20 |+| Category | Amplifiers/Comparators |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `INA253A3IPWR`+- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`+- 3D model: TSSOP-20 (KiCad packages3D, STEP)+- 3D model files: `ina253a3ipwr-etched.step` / `ina253a3ipwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina253a3ipwr.step` / `ina253a3ipwr.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/ina253) (36 pp, sha256 `aac4f0956c4235a7`, 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/ina253a3ipwr-datasheet.pdf)
page.jsonadded+272@@ -0,0 +1,272 @@+{+ "slug": "ina253a3ipwr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Current Sense Amplifiers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "amplifiers-comparators",+ "ina253a3ipwr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "ina253a3ipwr.kicad_sym",+ "ina253a3ipwr.kicad_mod",+ "ina253a3ipwr.glb",+ "ina253a3ipwr.step",+ "ina253a3ipwr.lbr",+ "docs/hero.png",+ "docs/ina253a3ipwr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "ina253a3ipwr-hero.glb",+ "ina253a3ipwr-hero.overlay.json"+ ],+ "component": {+ "mpn": "INA253A3IPWR",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-20",+ "pin_count": 20,+ "category": "Amplifiers/Comparators",+ "subcategory": "Current Sense Amplifiers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/ina253",+ "parts": {+ "symbol": "ina253a3ipwr.kicad_sym",+ "footprint": "ina253a3ipwr.kicad_mod",+ "model_3d": "ina253a3ipwr-hero.glb",+ "model_3d_plain": "ina253a3ipwr.glb",+ "model_3d_step": "ina253a3ipwr-etched.step",+ "model_3d_step_plain": "ina253a3ipwr.step",+ "lbr": "ina253a3ipwr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2862605",+ "digikey": "296-INA253A3IPWRTR-ND",+ "mouser": "595-INA253A3IPWR"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T19:34:43Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-INA253A3IPWRTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-INA253A3IPWR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "IS–",+ "type": "input",+ "description": "Analog input connected to the load side of the internal shunt; connect to the load."+ },+ {+ "number": "2",+ "name": "IS–",+ "type": "input",+ "description": "Analog input connected to the load side of the internal shunt; connect to the load."+ },+ {+ "number": "3",+ "name": "IS–",+ "type": "input",+ "description": "Analog input connected to the load side of the internal shunt; connect to the load."+ },+ {+ "number": "4",+ "name": "SH–",+ "type": "output",+ "description": "Kelvin connection to the internal shunt; connect to IN- if no filtering is needed."+ },+ {+ "number": "5",+ "name": "IN–",+ "type": "input",+ "description": "Voltage input from the load side of the shunt resistor."+ },+ {+ "number": "6",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference for the device."+ },+ {+ "number": "7",+ "name": "DNC1",+ "type": "unconnected",+ "description": "Do not connect this pin to any potential; leave it floating."+ },+ {+ "number": "8",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect."+ },+ {+ "number": "9",+ "name": "VS",+ "type": "power_in",+ "description": "Analog power supply, 2.7 V to 5.5 V."+ },+ {+ "number": "10",+ "name": "REF2",+ "type": "input",+ "description": "Reference voltage 2 input, 0 V to VS; do not connect to any voltage below GND or above VS."+ },+ {+ "number": "11",+ "name": "REF1",+ "type": "input",+ "description": "Reference voltage 1 input, 0 V to VS; do not connect to any voltage below GND or above VS."+ },+ {+ "number": "12",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect."+ },+ {+ "number": "13",+ "name": "OUT",+ "type": "output",+ "description": "Analog output voltage."+ },+ {+ "number": "14",+ "name": "DNC2",+ "type": "unconnected",+ "description": "Do not connect this pin to any potential; leave it floating."+ },+ {+ "number": "15",+ "name": "NC",+ "type": "unconnected",+ "description": "Reserved analog pin; the datasheet says to connect it to ground."+ },+ {+ "number": "16",+ "name": "IN+",+ "type": "input",+ "description": "Voltage input from the supply side of the shunt resistor."+ },+ {+ "number": "17",+ "name": "SH+",+ "type": "output",+ "description": "Kelvin connection to the internal shunt; connect to IN+ if no filtering is needed."+ },+ {+ "number": "18",+ "name": "IS+",+ "type": "input",+ "description": "Analog input; connect to the supply."+ },+ {+ "number": "19",+ "name": "IS+",+ "type": "input",+ "description": "Analog input; connect to the supply."+ },+ {+ "number": "20",+ "name": "IS+",+ "type": "input",+ "description": "Analog input; connect to the supply."+ }+ ],+ "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: Pin 15 is named NC in the table but is listed as an 'Analog' type reserved pin that must be connecte; The pin diagram shows the sense pins as IS± and SH±; the pin table names them IS-/IS+ and SH-/SH+. I; DNC1 and DNC2 are 'do not connect' pins and are mapped to unconnected. Pins 8 and 12 are plain NC an"+ ],+ "pages_sent": 11,+ "cost_usd": 0.0647,+ "at": "2026-10-08T19:34:04"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ina253",+ "pages": 36,+ "sha256": "aac4f0956c4235a7",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 20,+ "described": 20,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "ina253a3ipwr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ina253a3ipwr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.4,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "82079dff02cc8dea960969ff11d22fd11a45fd8b209f7dedbbefaa239fae285f",+ "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]"+ }+}