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Ray Set visibility: public d5c1f78 4d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "tps7a3901dsct",
  "title": "TPS7A3901DSCT",
  "brief": "Texas Instruments Linear Voltage Regulators (LDO), WSON-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power supply chip",
    "tps7a3901dsct",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TPS7A3901DSCT",
    "manufacturer": "Texas Instruments",
    "package": "WSON-10-EP(3x3)",
    "pin_count": 11,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps7a39",
    "parts": {
      "symbol": "tps7a3901dsct.kicad_sym",
      "footprint": "tps7a3901dsct.kicad_mod",
      "model_3d": "tps7a3901dsct-hero.glb",
      "model_3d_plain": "tps7a3901dsct-etched.glb",
      "model_3d_step": "tps7a3901dsct-etched.step",
      "model_3d_step_plain": "tps7a3901dsct.step",
      "lbr": "tps7a3901dsct.lbr"
    },
    "distributor_links": {
      "lcsc": "C2876324"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:39:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 995 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INP",
        "type": "power_in",
        "description": "Positive input supply (3.3V to 33V); requires a 10µF or larger capacitor to ground placed as close to the pin as possible for stability."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable pin: logic high (VEN ≥ VIH(EN)) enables the device and logic low (VEN ≤ VIL(EN)) disables it; tie to INP if unused and VEN must not exceed VINP."
      },
      {
        "number": "3",
        "name": "NR/SS",
        "type": "passive",
        "description": "Noise-reduction and soft-start pin; a capacitor of 10nF or larger to GND reduces reference noise and enables soft start and startup tracking, and it can also be driven externally as a reference."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; must be connected to ground through a low-impedance path and to the thermal pad."
      },
      {
        "number": "5",
        "name": "INN",
        "type": "power_in",
        "description": "Negative input supply (-3.3V to -33V); requires a 10µF or larger capacitor to ground placed as close to the pin as possible for stability."
      },
      {
        "number": "6",
        "name": "OUTN",
        "type": "power_out",
        "description": "Negative output; requires a 10µF or larger capacitor to ground placed as close to the pin as possible for stability."
      },
      {
        "number": "7",
        "name": "FBN",
        "type": "input",
        "description": "Negative output feedback pin that sets the negative output voltage, regulated to VFBN; an optional 10nF feedforward capacitor goes from OUTN to FBN and the pin must never be grounded."
      },
      {
        "number": "8",
        "name": "BUF",
        "type": "output",
        "description": "Buffered reference output connected through R2N to FBN for the negative feedback network; it can drive external circuits with a maximum load of 1mA."
      },
      {
        "number": "9",
        "name": "FBP",
        "type": "input",
        "description": "Positive output feedback pin that sets the positive output voltage, regulated to VFBP; an optional 10nF feedforward capacitor goes from OUTP to FBP and the pin must not be directly grounded."
      },
      {
        "number": "10",
        "name": "OUTP",
        "type": "power_out",
        "description": "Positive output; requires a 10µF or larger capacitor to ground placed as close to the pin as possible for stability."
      },
      {
        "number": "11",
        "name": "Thermal Pad",
        "type": "passive",
        "description": "Thermal pad, internally connected to GND; connect to a large ground plane."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The thermal pad is printed as 'Pad' with no pin number in the datasheet. I assigned it number 11 (pa; The datasheet pin table gives no I/O type for NR/SS (shown as '—'). I chose passive because it conne"
        ],
        "pages_sent": 26,
        "cost_usd": 0.2276,
        "at": "2026-10-22T22:39:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps7a39",
        "pages": 54,
        "sha256": "ed6adf7cb68e7992",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tps7a3901dsct.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          2.98,
          1.02
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1b436233b33ebba84da89538e97b0062d5b95e5ae0b484c46c569cb67274a3a5",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps7a3901dsct-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          2.98,
          1.02
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c30e17ca675fd9851ac5e3eb12ba91aaf79a5077bd7f92ec9bc15963b79530f7",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WSON-10-EP(3x3)",
      "Category": "Power Supply Chip",
      "Pins": "11"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ed6adf7cb68e79922bcbe61954a7ed7fa5f2fd14cc1557b942dcafaf229d9393",
      "rows": [
        {
          "name": "Supply voltage magnitude, either regulator",
          "symbol": "|VINx|",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.3,
          "typ": null,
          "max": 33,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Enable voltage",
          "symbol": "VEN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "max = VINP",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Positive output voltage range",
          "symbol": "VOUTP",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "min = VFBP",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Negative output voltage range",
          "symbol": "VOUTN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "max = VFBN",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output current, either regulator",
          "symbol": "IOUTx",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0.005,
          "typ": null,
          "max": 150,
          "conditions": "min load needed when no feedback resistors used",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "BUF pin output current",
          "symbol": "IBUF",
          "kind": "recommended_operating",
          "unit": "µA",
          "min": 0,
          "typ": 120,
          "max": 1000,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input capacitor",
          "symbol": "CINx",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 4.7,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor",
          "symbol": "COUTx",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 4.7,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Noise-reduction/soft-start capacitor",
          "symbol": "CNR/SS",
          "kind": "recommended_operating",
          "unit": "nF",
          "min": 0,
          "typ": 10,
          "max": 1000,
          "conditions": "at least 4.7 nF needed for startup tracking",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Positive feed-forward capacitor",
          "symbol": "CFFP",
          "kind": "recommended_operating",
          "unit": "nF",
          "min": 0,
          "typ": 10,
          "max": 100,
          "conditions": "VOUTP to FBP",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Negative feed-forward capacitor",
          "symbol": "CFFN",
          "kind": "recommended_operating",
          "unit": "nF",
          "min": 0,
          "typ": 10,
          "max": 100,
          "conditions": "VOUTN to FBN",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Lower positive feedback resistor",
          "symbol": "R2P",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 10,
          "typ": 240,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Lower negative feedback resistor",
          "symbol": "R2N",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 10,
          "typ": 240,
          "max": null,
          "conditions": "FBN to BUF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 44.4,
          "max": null,
          "conditions": "DSC (WSON) 10-pin",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 33.7,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 19.4,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter",
          "symbol": "ψJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board characterization parameter",
          "symbol": "ψJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 19.5,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (bottom) thermal resistance",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 2.9,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input voltage range, positive channel",
          "symbol": "VINP",
          "kind": "electrical",
          "unit": "V",
          "min": 3.3,
          "typ": null,
          "max": 33,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input voltage range, negative channel",
          "symbol": "VINN",
          "kind": "electrical",
          "unit": "V",
          "min": -33,
          "typ": null,
          "max": -3.3,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "UVLO threshold, positive channel",
          "symbol": "VUVLOP(rising)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": 3.1,
          "conditions": "VINP rising, VINN = –3.3V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis, positive channel",
          "symbol": "VUVLOP(hys)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "VINP falling, VINN = –3.3V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "UVLO threshold, negative channel",
          "symbol": "VUVLON(falling)",
          "kind": "electrical",
          "unit": "V",
          "min": -3.1,
          "typ": null,
          "max": -1.4,
          "conditions": "VINN falling, VINP = 3.3V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis, negative channel",
          "symbol": "VUVLON(hys)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "VINN rising, VINP = 3.3V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Internal reference voltage",
          "symbol": "VNR/SS",
          "kind": "electrical",
          "unit": "V",
          "min": 1.172,
          "typ": 1.19,
          "max": 1.208,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Positive feedback voltage",
          "symbol": "VFBP",
          "kind": "electrical",
          "unit": "V",
          "min": 1.17,
          "typ": 1.188,
          "max": 1.206,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Negative feedback voltage",
          "symbol": "VFBN",
          "kind": "electrical",
          "unit": "mV",
          "min": -10,
          "typ": 3.7,
          "max": 10,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VOUTP accuracy",
          "symbol": "VOUTP",
          "kind": "electrical",
          "unit": "%VOUT",
          "min": -1.5,
          "typ": null,
          "max": 1.5,
          "conditions": "VINP(nom) ≤ VINP ≤ 33V, 1mA ≤ IOUTP ≤ 150mA, 1.2V ≤ VOUTP(nom) ≤ 30V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VOUTN accuracy",
          "symbol": "VOUTN",
          "kind": "electrical",
          "unit": "%VOUT",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "–33V ≤ VINN ≤ VINN(nom), –150mA ≤ IOUTN ≤ –1mA, –30V ≤ VOUTN(nom) ≤ –1.2V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Negative VOUT channel accuracy, VOUTN(nom) between -1.2V and 0V",
          "symbol": "VOUTN",
          "kind": "electrical",
          "unit": "mV",
          "min": -36,
          "typ": null,
          "max": 36,
          "conditions": "–33V ≤ VINN ≤ VINN(nom), –150mA ≤ IOUTN ≤ 1mA, –1.2 V < VOUTN(nom) < 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Negative VOUT channel accuracy, VOUTN(nom) = 0V",
          "symbol": "VOUTN",
          "kind": "electrical",
          "unit": "mV",
          "min": -12,
          "typ": null,
          "max": 12,
          "conditions": "–33V ≤ VINN ≤ VINN(nom), –150mA ≤ IOUTN ≤ 1mA, VOUTN(nom) = 0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line regulation, positive channel",
          "symbol": "ΔVOUT(ΔVIN)/VOUT(NOM)",
          "kind": "electrical",
          "unit": "%VOUT",
          "min": null,
          "typ": 0.035,
          "max": null,
          "conditions": "VINP(nom) ≤ VINP ≤ 33V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line regulation, negative channel",
          "symbol": "ΔVOUT(ΔVIN)/VOUT(NOM)",
          "kind": "electrical",
          "unit": "%VOUT",
          "min": null,
          "typ": 0.125,
          "max": null,
          "conditions": "–33V ≤ VINN ≤ VOUT(nom) + 1V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load regulation, positive channel",
          "symbol": "ΔVOUT(ΔIOUT)/VOUT(NOM)",
          "kind": "electrical",
          "unit": "%VOUT",
          "min": null,
          "typ": -0.09,
          "max": null,
          "conditions": "1mA ≤ IOUTP ≤ 150mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
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