BQ24079RGTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq24079rgtr",
  "title": "BQ24079RGTR",
  "brief": "Texas Instruments Battery Management, QFN-16-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 management (pmic)",
    "bq24079rgtr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BQ24079RGTR",
    "manufacturer": "Texas Instruments",
    "package": "QFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq24079.pdf",
    "parts": {
      "symbol": "bq24079rgtr.kicad_sym",
      "footprint": "bq24079rgtr.kicad_mod",
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      "model_3d_plain": "bq24079rgtr.glb",
      "model_3d_step": "bq24079rgtr-etched.step",
      "model_3d_step_plain": "bq24079rgtr.step",
      "lbr": "bq24079rgtr.lbr"
    },
    "distributor_links": {
      "lcsc": "C140287",
      "digikey": "296-24815-2-ND",
      "mouser": "595-BQ24079RGTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T22:13:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-24815-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-BQ24079RGTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TS",
        "type": "input",
        "description": "External NTC thermistor input that monitors a 10 kΩ NTC in the battery pack; if TS is unused, a 10 kΩ fixed resistor from TS to VSS is required to hold a valid voltage level."
      },
      {
        "number": "2",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Charger power stage output and battery voltage sense input that connects to the battery positive terminal and must be bypassed to VSS with a 4.7 µF to 47 µF ceramic capacitor."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Charger power stage output and battery voltage sense input that connects to the battery positive terminal and must be bypassed to VSS with a 4.7 µF to 47 µF ceramic capacitor."
      },
      {
        "number": "4",
        "name": "CE",
        "type": "input",
        "description": "Active-low charge enable input where a high level disables battery charging (OUT stays active and battery supplement remains available) and a low level enables the charger; it is internally pulled down with about 285 kΩ and must not be left unconnected."
      },
      {
        "number": "5",
        "name": "EN2",
        "type": "input",
        "description": "Input current limit configuration input that works with EN1 to select the maximum input current and USB compliance mode per Table 7-2; it is internally pulled down with about 285 kΩ and must not be left unconnected."
      },
      {
        "number": "6",
        "name": "EN1",
        "type": "input",
        "description": "Input current limit configuration input that works with EN2 to select the maximum input current and USB compliance mode per Table 7-2; it is internally pulled down with about 285 kΩ and must not be left unconnected."
      },
      {
        "number": "7",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power good output that pulls to VSS when a valid input source is detected and is high impedance when the input is outside the specified limits, connected to a logic rail through 1 kΩ to 100 kΩ or used with an LED."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin that must be connected to the thermal pad and the ground rail of the circuit and must be connected to ground at all times."
      },
      {
        "number": "9",
        "name": "CHG",
        "type": "output",
        "description": "Open-drain charging status output that pulls to VSS while charging and is high impedance when charging is complete or the charger is disabled, connected to a logic rail through 1 kΩ to 100 kΩ or used with an LED."
      },
      {
        "number": "10",
        "name": "OUT",
        "type": "output",
        "description": "System supply output that provides a regulated voltage when the input is below the OVP threshold and above the regulation voltage, is connected to VBAT when the input is out of range except when SYSOFF is high, and must be bypassed to VSS with 4.7 µF to 47 µF ceramic."
      },
      {
        "number": "11",
        "name": "OUT",
        "type": "output",
        "description": "System supply output that provides a regulated voltage when the input is below the OVP threshold and above the regulation voltage, is connected to VBAT when the input is out of range except when SYSOFF is high, and must be bypassed to VSS with 4.7 µF to 47 µF ceramic."
      },
      {
        "number": "12",
        "name": "ILIM",
        "type": "input",
        "description": "Adjustable current limit programming input where a 1100 Ω to 8 kΩ resistor to VSS sets the maximum input current in EN2=1, EN1=0 mode, and leaving it unconnected disables all charging."
      },
      {
        "number": "13",
        "name": "IN",
        "type": "input",
        "description": "Input power connection for the external DC supply with an operating range of 4.35 V to 6.6 V for the BQ24079 per Table 7-1, which can accept up to 26 V without damage but operation is suspended, and it requires a 1 µF to 10 µF bypass capacitor to VSS."
      },
      {
        "number": "14",
        "name": "TMR",
        "type": "input",
        "description": "Timer programming input where a 18 kΩ to 72 kΩ resistor to VSS sets the pre-charge and fast-charge safety timers, connecting it to VSS disables all safety timers, and leaving it unconnected selects the default timers."
      },
      {
        "number": "15",
        "name": "SYSOFF",
        "type": "input",
        "description": "System enable input where a high level turns off the FET connecting the battery to the system output and also disables charging when an adapter is connected, a low level gives normal operation, and it is internally pulled up to VBAT through about 5 MΩ and must not be left unconnected."
      },
      {
        "number": "16",
        "name": "ISET",
        "type": "bidirectional",
        "description": "Fast-charge current programming input/output where a 590 Ω to 8.9 kΩ resistor to VSS sets the fast-charge current, charging is disabled if left unconnected, and its voltage reflects the actual charge current while charging."
      },
      {
        "number": "17",
        "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 exposed thermal pad is listed in Table 7-1 and Figure 7-3 but is not given a number on the packa; Datasheet conflict on the BQ24079 IN operating range: Table 7-1 gives 4.35 V to 6.6 V, while Section; Pin 2 and pin 3 are both BAT and pins 10 and 11 are both OUT; each is listed separately as printed. ",
          "exposed pad 17 added from the footprint"
        ],
        "pages_sent": 16,
        "cost_usd": 0.1086,
        "at": "2026-10-10T22:13:19"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq24079.pdf",
        "pages": 55,
        "sha256": "4fe4e4f9855501f8",
        "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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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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          3,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq24079rgtr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "af47ccbd509bc2486a8c7e5c9a3d7296e4276cbaa384f3ebc37c666ead0560f2",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "QFN-16-EP(3x3)",
      "Category": "Power Management (PMIC)",
      "Pins": "17"
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
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  "discovery_triggers": [
    "bq24079rgtr"
  ],
  "discovery_pitch": "BQ24079RGTR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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}