TPS65257RHAR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tps65257rhar",
  "title": "TPS65257RHAR",
  "brief": "Texas Instruments DC-DC Converters, VQFN-40-EP(6x6). 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 management (pmic)",
    "tps65257rhar",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TPS65257RHAR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-40-EP(6x6)",
    "pin_count": 41,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps65257",
    "parts": {
      "symbol": "tps65257rhar.kicad_sym",
      "footprint": "tps65257rhar.kicad_mod",
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      "model_3d_plain": "tps65257rhar.glb",
      "model_3d_step": "tps65257rhar-etched.step",
      "model_3d_step_plain": "tps65257rhar.step",
      "lbr": "tps65257rhar.lbr"
    },
    "distributor_links": {
      "lcsc": "C2861617",
      "digikey": "296-29653-2-ND",
      "mouser": "595-TPS65257RHAR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T09:36:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-29653-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS65257RHAR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RLIM3",
        "type": "input",
        "description": "Current limit setting for Buck3; a resistor from this pin to ground sets the peak current limit on the output inductor."
      },
      {
        "number": "2",
        "name": "SS3",
        "type": "input",
        "description": "Soft start pin for Buck3; a small ceramic capacitor on this pin sets the converter soft start time."
      },
      {
        "number": "3",
        "name": "COMP3",
        "type": "output",
        "description": "Compensation for Buck3; a series RC circuit on this pin completes the converter compensation."
      },
      {
        "number": "4",
        "name": "FB3",
        "type": "input",
        "description": "Feedback pin for Buck3; connect a divider set to 0.8 V from the converter output to ground."
      },
      {
        "number": "5",
        "name": "PB_IN",
        "type": "input",
        "description": "Push button input (active low); rated 10 kV HBM ESD."
      },
      {
        "number": "6",
        "name": "ROSC",
        "type": "input",
        "description": "Oscillator set; an external resistor (50 kΩ to 600 kΩ) sets the frequency of the internal clock (0.3 to 2.2 MHz)."
      },
      {
        "number": "7",
        "name": "FB1",
        "type": "input",
        "description": "Feedback pin for Buck1; connect a divider set to 0.8 V from the converter output to ground."
      },
      {
        "number": "8",
        "name": "COMP1",
        "type": "output",
        "description": "Compensation pin for Buck1; a series RC circuit on this pin completes the converter compensation."
      },
      {
        "number": "9",
        "name": "SS1",
        "type": "input",
        "description": "Soft-start pin for Buck1; a small ceramic capacitor on this pin sets the converter soft-start time."
      },
      {
        "number": "10",
        "name": "RLIM1",
        "type": "input",
        "description": "Current limit setting pin for Buck1; a resistor from this pin to ground sets the peak current limit on the output inductor."
      },
      {
        "number": "11",
        "name": "EN1",
        "type": "input",
        "description": "Enable pin for Buck1; a high signal enables the regulator, and a small capacitor to ground delays start-up."
      },
      {
        "number": "12",
        "name": "BST1",
        "type": "passive",
        "description": "Bootstrap capacitor for Buck1; fit a 47-nF ceramic capacitor from this pin to the switching node."
      },
      {
        "number": "13",
        "name": "VIN1",
        "type": "power_in",
        "description": "Input supply for Buck1 (4.5 V to 16 V); fit a 10-µF ceramic capacitor close to this pin."
      },
      {
        "number": "14",
        "name": "LX1",
        "type": "output",
        "description": "Switching node for Buck1 (pins 14 and 15 are the same net)."
      },
      {
        "number": "15",
        "name": "LX1",
        "type": "output",
        "description": "Switching node for Buck1 (pins 14 and 15 are the same net)."
      },
      {
        "number": "16",
        "name": "LX2",
        "type": "output",
        "description": "Switching node for Buck2 (pins 16 and 17 are the same net)."
      },
      {
        "number": "17",
        "name": "LX2",
        "type": "output",
        "description": "Switching node for Buck2 (pins 16 and 17 are the same net)."
      },
      {
        "number": "18",
        "name": "VIN2",
        "type": "power_in",
        "description": "Input supply for Buck2 (4.5 V to 16 V); fit a 10-µF ceramic capacitor close to this pin."
      },
      {
        "number": "19",
        "name": "BST2",
        "type": "passive",
        "description": "Bootstrap capacitor for Buck2; fit a 47-nF ceramic capacitor from this pin to the switching node."
      },
      {
        "number": "20",
        "name": "EN2",
        "type": "input",
        "description": "Enable pin for Buck2; a high signal enables the regulator, and a small capacitor to ground delays start-up."
      },
      {
        "number": "21",
        "name": "RLIM2",
        "type": "input",
        "description": "Current limit setting pin for Buck2; a resistor from this pin to ground sets the peak current limit on the output inductor."
      },
      {
        "number": "22",
        "name": "SS2",
        "type": "input",
        "description": "Soft-start pin for Buck2; a small ceramic capacitor on this pin sets the converter soft-start time."
      },
      {
        "number": "23",
        "name": "COMP2",
        "type": "output",
        "description": "Compensation pin for Buck2; a series RC circuit on this pin completes the converter compensation."
      },
      {
        "number": "24",
        "name": "FB2",
        "type": "input",
        "description": "Feedback input for Buck2; connect a divider set to 0.8 V from the converter output to ground."
      },
      {
        "number": "25",
        "name": "F_PWM",
        "type": "input",
        "description": "Forces PWM operation in all converters when high; when low the converters operate in automatic PFM/PWM mode."
      },
      {
        "number": "26",
        "name": "INT",
        "type": "output",
        "description": "Open drain interrupt output."
      },
      {
        "number": "27",
        "name": "PGOOD",
        "type": "output",
        "description": "Open drain power-good output, asserted after all converters are sequenced and within regulation; polarity is factory selectable (active high default)."
      },
      {
        "number": "28",
        "name": "V7V",
        "type": "power_out",
        "description": "Internal 6.25 V supply; connect a 4.7-µF to 10-µF ceramic capacitor from this pin to ground."
      },
      {
        "number": "29",
        "name": "V3V",
        "type": "power_out",
        "description": "Internal 3.3 V supply; connect a 3.3-µF to 10-µF ceramic capacitor from this pin to ground."
      },
      {
        "number": "30",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "31",
        "name": "IC",
        "type": "input",
        "description": "This pin should be connected to the V7V pin."
      },
      {
        "number": "32",
        "name": "USB_VIN",
        "type": "power_in",
        "description": "USB switch input supply (absolute maximum -0.3 to 7 V)."
      },
      {
        "number": "33",
        "name": "USB_Vo",
        "type": "power_out",
        "description": "USB switch output, supplying up to 1 A to downstream USB devices."
      },
      {
        "number": "34",
        "name": "USB_EN",
        "type": "input",
        "description": "USB switch enable input; high turns on the switch."
      },
      {
        "number": "35",
        "name": "USB_nFAULT",
        "type": "output",
        "description": "USB fault flag output, open drain, active low; asserted when overcurrent or overtemperature is detected in the switch."
      },
      {
        "number": "36",
        "name": "LX3",
        "type": "output",
        "description": "Switching node for Buck3 (pins 36 and 37 are the same net)."
      },
      {
        "number": "37",
        "name": "LX3",
        "type": "output",
        "description": "Switching node for Buck3 (pins 36 and 37 are the same net)."
      },
      {
        "number": "38",
        "name": "VIN3",
        "type": "power_in",
        "description": "Input supply for Buck3 (4.5 V to 16 V); fit a 10-µF ceramic capacitor close to this pin."
      },
      {
        "number": "39",
        "name": "BST3",
        "type": "passive",
        "description": "Bootstrap capacitor for Buck3; fit a 47-nF ceramic capacitor from this pin to the switching node."
      },
      {
        "number": "40",
        "name": "EN3",
        "type": "input",
        "description": "Enable pin for Buck3; a high signal enables the converter, and a small capacitor to ground delays start-up."
      },
      {
        "number": "41",
        "name": "PowerPAD",
        "type": "power_in",
        "description": "PowerPAD; connect to system ground for electrical and thermal connection."
      }
    ],
    "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 I/O column is blank for BST1 and BST2 in the extracted terminal table, while BST3 is listed as i; The I/O column is blank for F_PWM in the extracted terminal table. Typed as input based on its enabl; The I/O column is blank for USB_Vo. Typed as output because the description reads 'USB switch output",
          "exposed pad 41 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0833,
        "at": "2026-10-11T09:35:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps65257",
        "pages": 43,
        "sha256": "878873c6c0906983",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tps65257rhar.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          6,
          1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps65257rhar-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          6,
          1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "14487c4a06150559ffc35921f45a433f92757bf0093a75a1dbcbcf2635e7eaf4",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-40-EP(6x6)",
      "Category": "Power Management (PMIC)",
      "Pins": "41"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tps65257rhar"
  ],
  "discovery_pitch": "TPS65257RHAR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "tps65257rhar.step",
    "tps65257rhar.lbr",
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    "docs/tps65257rhar-datasheet.pdf",
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}