BQ25570RGRT

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq25570rgrt",
  "title": "BQ25570RGRT",
  "brief": "Texas Instruments Battery Management, VQFN-20-EP(3.5x3.5). 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)",
    "bq25570rgrt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BQ25570RGRT",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-20-EP(3.5x3.5)",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq25570",
    "parts": {
      "symbol": "bq25570rgrt.kicad_sym",
      "footprint": "bq25570rgrt.kicad_mod",
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      "model_3d_plain": "bq25570rgrt.glb",
      "model_3d_step": "bq25570rgrt-etched.step",
      "model_3d_step_plain": "bq25570rgrt.step",
      "lbr": "bq25570rgrt.lbr"
    },
    "distributor_links": {
      "lcsc": "C181625",
      "digikey": "296-37014-2-ND",
      "mouser": "595-BQ25570RGRT"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T20:48:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-37014-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-BQ25570RGRT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VSS",
        "type": "power_in",
        "description": "Power ground for the boost charger."
      },
      {
        "number": "2",
        "name": "VIN_DC",
        "type": "input",
        "description": "DC voltage input from the energy harvesting source, rated VIN(DC) 0.1 V to 5.1 V; connect at least a 4.7 µF capacitor as close as possible between this pin and pin 1."
      },
      {
        "number": "3",
        "name": "VOC_SAMP",
        "type": "input",
        "description": "Sampling pin for the MPPT network: connect to VSTOR to sample at 80% of the input source open-circuit voltage, to GND for 50%, or to a resistor divider midpoint between VIN_DC and GND."
      },
      {
        "number": "4",
        "name": "VREF_SAMP",
        "type": "input",
        "description": "Connect a 0.01-µF low-leakage capacitor from this pin to GND to store the voltage to which VIN_DC will be regulated, provided by the MPPT sample circuit."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Active-low digital programming input for enabling or disabling the IC; connect to GND to enable the IC."
      },
      {
        "number": "6",
        "name": "VOUT_EN",
        "type": "input",
        "description": "Active-high digital programming input for enabling or disabling the buck converter; connect to VSTOR to enable the buck converter."
      },
      {
        "number": "7",
        "name": "VBAT_OV",
        "type": "input",
        "description": "Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VBAT overvoltage threshold."
      },
      {
        "number": "8",
        "name": "VRDIV",
        "type": "output",
        "description": "High side of the resistor divider networks; connect to this biasing voltage."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "Listed as NC in the pin table but the datasheet instructs connecting it to ground using the IC's PowerPAD."
      },
      {
        "number": "10",
        "name": "OK_HYST",
        "type": "input",
        "description": "Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VBAT_OK hysteresis threshold; connect to GND if not used."
      },
      {
        "number": "11",
        "name": "OK_PROG",
        "type": "input",
        "description": "Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VBAT_OK threshold; connect to GND if not used."
      },
      {
        "number": "12",
        "name": "VOUT_SET",
        "type": "input",
        "description": "Connect to the midpoint of an external resistor divider between VRDIV and GND to set the VOUT regulation set point."
      },
      {
        "number": "13",
        "name": "VBAT_OK",
        "type": "output",
        "description": "Digital battery-good indicator output, internally referenced to the VSTOR voltage; leave floating if not used."
      },
      {
        "number": "14",
        "name": "VOUT",
        "type": "output",
        "description": "Buck converter output; connect at least a 22 µF output capacitor between this pin and pin 15 (VSS)."
      },
      {
        "number": "15",
        "name": "VSS",
        "type": "power_in",
        "description": "Power ground for the buck converter and analog/signal ground for the resistor dividers and VREF_SAMP capacitor."
      },
      {
        "number": "16",
        "name": "LBUCK",
        "type": "bidirectional",
        "description": "Inductor connection for the buck converter switching node; connect at least a 4.7 µH inductor between this pin and pin 14 (VOUT)."
      },
      {
        "number": "17",
        "name": "NC",
        "type": "unconnected",
        "description": "Listed as NC in the pin table but the datasheet instructs connecting it to ground using the IC's PowerPAD."
      },
      {
        "number": "18",
        "name": "VBAT",
        "type": "power_in",
        "description": "Connect a rechargeable storage element with at least 100 µF of equivalent capacitance between this pin and either VSS pin."
      },
      {
        "number": "19",
        "name": "VSTOR",
        "type": "output",
        "description": "Output of the boost charger; connect at least a 4.7 µF capacitor in parallel with a 0.1 µF capacitor as close as possible between this pin and pin 1 (VSS)."
      },
      {
        "number": "20",
        "name": "LBOOST",
        "type": "bidirectional",
        "description": "Inductor connection for the boost charger switching node; connect a 22 µH inductor between this pin and pin 2 (VIN_DC)."
      },
      {
        "number": "21",
        "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: The datasheet pin table lists pins 9 and 17 as NC with type I, but says to connect them to ground th; The thermal pad (PowerPAD) is not a numbered pin in the datasheet pin table, so it is not included i",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0688,
        "at": "2026-10-11T20:47:53"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq25570",
        "pages": 46,
        "sha256": "87e66e0264e36d59",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "916f9eecab3b4f2c5a9bd5e9a404188570509e9af0ac52491b7befdfa659eb7b",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "df75e2fa37360a63430b8695ab9af2caecef999f1078c0e3932ac19f4efc0e9e",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-20-EP(3.5x3.5)",
      "Category": "Power Management (PMIC)",
      "Pins": "21"
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "BQ25570RGRT (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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