BQ24073RGTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq24073rgtr",
  "title": "BQ24073RGTR",
  "brief": "Texas Instruments Battery Management, QFN-16-EP(3x3). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "bq24073rgtr"
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  "component": {
    "mpn": "BQ24073RGTR",
    "manufacturer": "Texas Instruments",
    "package": "QFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq24073.pdf",
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "TS",
        "type": "input",
        "description": "External NTC thermistor input. Connect to a 10 kΩ NTC in the battery pack to monitor pack temperature. If unused, tie to VSS through a fixed 10 kΩ resistor to maintain a valid voltage."
      },
      {
        "number": "2",
        "name": "BAT",
        "type": "power_out",
        "description": "Charger power stage output and battery voltage sense. Connect to the positive terminal of the battery; bypass to VSS with a 4.7 µF to 47 µF ceramic capacitor. Pins 2 and 3 are internally tied together."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "power_out",
        "description": "Charger power stage output and battery voltage sense. Connect to the positive terminal of the battery; bypass to VSS with a 4.7 µF to 47 µF ceramic capacitor. Pins 2 and 3 are internally tied together."
      },
      {
        "number": "4",
        "name": "CE",
        "type": "input",
        "description": "Charge enable, active-low. Drive high to disable the battery charger (OUT and battery supplement mode still available); drive low to enable charging. Internally pulled down through ~285 kΩ; do not leave floating."
      },
      {
        "number": "5",
        "name": "EN2",
        "type": "input",
        "description": "Input current limit configuration bit 2 (with EN1) for USB compliance and ILIM enable. See EN1/EN2 table. Internally pulled down through ~285 kΩ; do not leave floating."
      },
      {
        "number": "6",
        "name": "EN1",
        "type": "input",
        "description": "Input current limit configuration bit 1 (with EN2) for USB compliance and ILIM enable. See EN1/EN2 table. Internally pulled down through ~285 kΩ; do not leave floating."
      },
      {
        "number": "7",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power good status. Pulls to VSS when a valid input source within limits is detected; high-impedance otherwise. Tie to a 1 kΩ-100 kΩ pull-up to the logic rail or use with an LED."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground. Connect to the thermal pad and to the circuit ground rail."
      },
      {
        "number": "9",
        "name": "CHG",
        "type": "output",
        "description": "Open-drain charging status indicator (active-low). Pulls to VSS while the battery is charging and is high-impedance when charging is complete or the charger is disabled. Pull up through a 1 kΩ-100 kΩ resistor to the logic rail or drive an LED."
      },
      {
        "number": "10",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated system supply output from the power-path stage. Delivers a regulated voltage (BQ24073: 4.4 V) when the input is within range, otherwise connects to VBAT. Bypass to VSS with a 4.7 µF to 47 µF ceramic capacitor; pins 10 and 11 are tied together."
      },
      {
        "number": "11",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated system supply output from the power-path stage. Delivers a regulated voltage (BQ24073: 4.4 V) when the input is within range, otherwise connects to VBAT. Bypass to VSS with a 4.7 µF to 47 µF ceramic capacitor; pins 10 and 11 are tied together."
      },
      {
        "number": "12",
        "name": "ILIM",
        "type": "input",
        "description": "Adjustable input current limit programming pin. Connect a 1100 Ω to 8 kΩ resistor from ILIM to VSS to set the maximum input current when EN2=1, EN1=0. Leaving ILIM unconnected disables all charging."
      },
      {
        "number": "13",
        "name": "IN",
        "type": "power_in",
        "description": "Input power from AC adapter or USB port. Operating range 4.35 V to 6.6 V (BQ24073); withstands up to 26 V without damage but operation is suspended above OVP (6.6 V). Bypass to VSS with 1 µF to 10 µF ceramic."
      },
      {
        "number": "14",
        "name": "TMR",
        "type": "input",
        "description": "Safety-timer programming input. Tie to VSS to disable all safety timers; connect an 18 kΩ to 72 kΩ resistor from TMR to VSS to program pre-charge and fast-charge timer lengths. Leave floating for default timers."
      },
      {
        "number": "15",
        "name": "TD",
        "type": "input",
        "description": "Termination-disable input. Drive high to disable charge termination; tie to VSS to enable termination. Sampled at startup only. Internally pulled down through ~285 kΩ; do not leave floating."
      },
      {
        "number": "16",
        "name": "ISET",
        "type": "bidirectional",
        "description": "Fast-charge current programming and monitor pin. Connect a 590 Ω to 8.9 kΩ resistor from ISET to VSS to set fast-charge current; the voltage at ISET mirrors the actual charge current. Leaving ISET floating disables charging."
      },
      {
        "number": "17",
        "name": "PAD",
        "type": "power_in",
        "description": "Exposed thermal pad, internally tied to VSS. Must be soldered to the PCB ground plane at the same potential as VSS for thermal performance; do not use as the primary ground path - pin 8 (VSS) must still be connected to ground."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq24073.pdf",
        "pages": 53,
        "sha256": "3c8a0a906dc305bc",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "zmin_mm": 0.0,
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        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "QFN-16-EP(3x3)",
      "Category": "PMIC",
      "Pins": "17"
    }
  },
  "variants": [
    {
      "mpn": "BQ24073RGTR",
      "kind": "packaging"
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    {
      "mpn": "BQ24073RGTRRGTT",
      "kind": "packaging"
    },
    {
      "mpn": "BQ24072RGTR",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24072RGTT",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24074RGTR",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24074RGTT",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24075RGTR",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24075RGTT",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24079RGTR",
      "kind": "unknown"
    },
    {
      "mpn": "BQ24079RGTT",
      "kind": "unknown"
    }
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  "discovery_pitch": "BQ24073RGTR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "updated_at": "2026-09-24T18:01:01.460Z"
}