BQ24070RHLR

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  "type": "component",
  "slug": "bq24070rhlr",
  "title": "BQ24070RHLR",
  "brief": "Texas Instruments Battery Management, QFN-20-EP(3.7x4.7). 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",
    "bq24070rhlr"
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  "component": {
    "mpn": "BQ24070RHLR",
    "manufacturer": "Texas Instruments",
    "package": "QFN-20-EP(3.7x4.7)",
    "pin_count": 20,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq24070rhlr.pdf",
    "parts": {
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VREF",
        "type": "power_out",
        "description": "Internal 3.3 V reference output. Active only when AC or USB input is present. Output current up to 20 mA; 0.1 µF decoupling capacitor recommended."
      },
      {
        "number": "2",
        "name": "STAT1",
        "type": "output",
        "description": "Charge status output 1 (open-drain). Requires external pullup (≥1 kΩ). VOL ≤ 0.25 V at 5 mA."
      },
      {
        "number": "3",
        "name": "STAT2",
        "type": "output",
        "description": "Charge status output 2 (open-drain). Requires external pullup (≥1 kΩ). Combined with STAT1 to encode charge state."
      },
      {
        "number": "4",
        "name": "IN",
        "type": "power_in",
        "description": "Charge input voltage from AC adapter or USB source. Operating range 4.35-16 V (abs max 18 V). Input current limited to 2 A."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Battery input and output. Connects to single-cell Li-Ion/Li-Polymer pack positive terminal. Regulates to 4.2 V during charge; sources system current in battery mode. Pins 5 and 6 must be tied together externally."
      },
      {
        "number": "6",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Battery input and output. Second BAT pin - tie to pin 5. Handles up to 3.5 A source / 4 A sink current."
      },
      {
        "number": "7",
        "name": "ISET2",
        "type": "input",
        "description": "USB charge current set point. High = 500 mA fast charge, Low = 100 mA charge. Also selects half-charge current mode."
      },
      {
        "number": "8",
        "name": "MODE",
        "type": "input",
        "description": "Power-source selection input. Low = USB mode current limit (defaults to USB charging); High = AC adapter mode (charges at ISET1 rate). VIL ≈ 1 V, VIH ≈ 1.024 V (small hysteresis, ~24 mV)."
      },
      {
        "number": "9",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input (active high). Logic-level input; VIL ≤ 0.4 V, VIH ≥ 1.4 V. CE-holdoff time 3.3-6.2 ms."
      },
      {
        "number": "10",
        "name": "ISET1",
        "type": "bidirectional",
        "description": "Charge current set point (RSET to VSS) and precharge/termination set point. VSET typ 2.5 V; KSET ≈ 425 for 100 mA-1.5 A range. Also used to monitor charge current."
      },
      {
        "number": "11",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin electrically connected to the exposed thermal pad. Must be tied to board ground; do not rely on the thermal pad alone as the primary ground return."
      },
      {
        "number": "12",
        "name": "TS",
        "type": "bidirectional",
        "description": "Battery temperature sense input. Compared against V(LTF)=2.5 V and V(HTF)=0.5 V thresholds using a 100 µA current source. Connects to a battery-pack NTC thermistor."
      },
      {
        "number": "13",
        "name": "DPPM",
        "type": "input",
        "description": "Dynamic power-path management set point (RDPPM to VSS). Programs the OUT regulation set point via a 100 µA current source; SF scale factor ≈ 1.150."
      },
      {
        "number": "14",
        "name": "TMR",
        "type": "bidirectional",
        "description": "Timer program input (RTMR to VSS, 30-100 kΩ). Sets fast-charge timer via KTMR ≈ 0.36 s/Ω. Tie to VREF to disable the safety timer and charge termination."
      },
      {
        "number": "15",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated system output. bq24070 variant regulates to 4.4 V. Output current up to 4 A absolute max. Pins 15/16/17 must be tied together on the PCB."
      },
      {
        "number": "16",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated system output. Tie to pins 15 and 17. Carries system load current from AC/USB input or battery."
      },
      {
        "number": "17",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated system output. Tie to pins 15 and 16."
      },
      {
        "number": "18",
        "name": "PG",
        "type": "output",
        "description": "Power-good status output (open-drain, active low). Requires external pullup (≥1 kΩ). VOL ≤ 0.25 V at 5 mA."
      },
      {
        "number": "19",
        "name": "GND",
        "type": "power_in",
        "description": "Ground input. Tie to pin 20 and system ground."
      },
      {
        "number": "20",
        "name": "GND",
        "type": "power_in",
        "description": "Ground input. Tie to pin 19 and system ground."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq24070rhlr.pdf",
        "pages": 31,
        "sha256": "b3910527d343126b",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
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        "refuses_to_fabricate": true
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        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "QFN-20-EP(3.7x4.7)",
      "Category": "PMIC",
      "Pins": "20"
    }
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  "discovery_pitch": "BQ24070RHLR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-24T18:00:37.718Z"
}