TPS3851G33SQDRBRQ1

{
  "slug": "tps3851g33sqdrbrq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Monitors & Reset Circuits, SON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "tps3851g33sqdrbrq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tps3851g33sqdrbrq1.kicad_sym",
    "tps3851g33sqdrbrq1.kicad_mod",
    "tps3851g33sqdrbrq1.glb",
    "tps3851g33sqdrbrq1.step",
    "tps3851g33sqdrbrq1.lbr",
    "docs/hero.png",
    "docs/tps3851g33sqdrbrq1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tps3851g33sqdrbrq1-hero.glb",
    "tps3851g33sqdrbrq1-hero.overlay.json"
  ],
  "component": {
    "mpn": "TPS3851G33SQDRBRQ1",
    "manufacturer": "Texas Instruments",
    "package": "SON-8-EP(3x3)",
    "pin_count": 9,
    "category": "Power Supply Chip",
    "subcategory": "Monitors & Reset Circuits",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps3851-q1",
    "parts": {
      "symbol": "tps3851g33sqdrbrq1.kicad_sym",
      "footprint": "tps3851g33sqdrbrq1.kicad_mod",
      "model_3d": "tps3851g33sqdrbrq1-hero.glb",
      "model_3d_plain": "tps3851g33sqdrbrq1.glb",
      "model_3d_step": "tps3851g33sqdrbrq1-etched.step",
      "model_3d_step_plain": "tps3851g33sqdrbrq1.step",
      "lbr": "tps3851g33sqdrbrq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2066732",
      "digikey": "296-51954-2-ND",
      "mouser": "595-S3851G33SQDRBRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T01:56:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-51954-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-S3851G33SQDRBRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply voltage pin; operating range VDD = 1.6V to 6.5V with recommended 0.1μF bypass capacitor for noisy systems"
      },
      {
        "number": "2",
        "name": "CWD",
        "type": "input",
        "description": "Programmable watchdog timeout input; connect capacitor between this pin and ground to set watchdog timeout, or connect 10kΩ resistor to VDD for preset watchdog timeout selection"
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Manual reset input with internal pull-up; logic low level triggers RESET; RESET held low for fixed reset delay tRST after MR returns to logic high"
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin; internally connects thermal pad to large ground plane"
      },
      {
        "number": "5",
        "name": "SET1",
        "type": "input",
        "description": "Logic input to enable/disable watchdog timer; logic low disables watchdog, logic high enables normal watchdog operation with 150µs setup time after transition"
      },
      {
        "number": "6",
        "name": "WDI",
        "type": "input",
        "description": "Watchdog input triggered by falling edge; falling edge must occur before watchdog timeout (tWD) ends to prevent WDO trigger; must be driven to VDD or GND when watchdog disabled"
      },
      {
        "number": "7",
        "name": "WDO",
        "type": "output",
        "description": "Watchdog output (open-drain); driven low after watchdog timeout for duration tRST; high-impedance state when RESET is low; requires 1kΩ to 100kΩ pull-up resistor to VPU"
      },
      {
        "number": "8",
        "name": "RESET",
        "type": "output",
        "description": "Reset output (open-drain); driven low when VDD falls below undervoltage threshold VITN; held low for delay tRST after recovery to VITN + VHYST; requires 1kΩ to 100kΩ pull-up resistor to VPU"
      },
      {
        "number": "9",
        "name": "Thermal Pad",
        "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-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 23,
        "cost_usd": 0.1697,
        "at": "2026-10-07T01:56:29"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps3851-q1",
        "pages": 39,
        "sha256": "187a2d3c4a847f7d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tps3851g33sqdrbrq1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          0.82
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cbee016fb8ee69c44b13d8818fcf65dcf240f5fdca70b22700521eb617c5311a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps3851g33sqdrbrq1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          0.82
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "38b75bc649bf692b40e0e734e648d364b895b413e3451f38d79436db76ecb8c5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}