SY6935QDC

{
  "slug": "sy6935qdc",
  "version": "0.1.1",
  "type": "component",
  "description": "Silergy Corp Battery Management ICs, QFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power management ics",
    "sy6935qdc",
    "factory-2.0.0",
    "extractor-text"
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  "dependencies": {},
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    "path": "docs/hero.png"
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    "sy6935qdc.glb",
    "sy6935qdc.step",
    "sy6935qdc.lbr",
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    "docs/sy6935qdc-datasheet.pdf",
    "viewers/symbol.html",
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    "sy6935qdc-hero.overlay.json",
    "sy6935qdc-etched.glb"
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  "component": {
    "mpn": "SY6935QDC",
    "manufacturer": "Silergy Corp",
    "package": "QFN-16(3x3)",
    "pin_count": 17,
    "category": "Power Management ICs",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/da184dd51d68fb74e936ab103d895fab.pdf",
    "parts": {
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      "footprint": "sy6935qdc.kicad_mod",
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      "model_3d_plain": "sy6935qdc-etched.glb",
      "model_3d_step": "sy6935qdc-etched.step",
      "model_3d_step_plain": "sy6935qdc.step",
      "lbr": "sy6935qdc.lbr"
    },
    "distributor_links": {
      "lcsc": "C207625"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T19:25:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RS",
        "type": "input",
        "description": "Charge current sense resistor positive pin; the voltage drop between RS and BAT is used for charge current regulation and charge termination detection (RS limited to BAT±0.25V recommended)."
      },
      {
        "number": "2",
        "name": "CELL",
        "type": "input",
        "description": "Battery voltage selection pin: floating for two-cell battery and grounded for single-cell battery; must not be pulled higher than 3.3V."
      },
      {
        "number": "3",
        "name": "TIM",
        "type": "passive",
        "description": "Charge time-out programming pin; connect a capacitor to ground to set the time-out threshold for trickle and fast charge modes (TC limit is about 1/9 of fast charge time)."
      },
      {
        "number": "4",
        "name": "NTC",
        "type": "input",
        "description": "Battery thermal sense pin with UTP threshold typically 75% VIN and OTP threshold typically 45% VIN; pulling it low for more than 100ms refreshes the adaptive input power limit threshold."
      },
      {
        "number": "5",
        "name": "CV",
        "type": "input",
        "description": "Battery CV voltage selection pin (below 0.4V selects 4.2V/cell, above 1.5V selects 4.35V/cell)."
      },
      {
        "number": "6",
        "name": "VSEN",
        "type": "input",
        "description": "Input voltage sense pin for adaptive input power limit; when the voltage drops to the internal 1.19V reference, VIN is clamped and input current is limited."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable control pin: high logic (above 1.5V) enables, low logic (below 0.4V) disables."
      },
      {
        "number": "8",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground pin."
      },
      {
        "number": "9",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charge status indication pin; pulled high to IN through a LED, which is on during charging, off when done, and flashing at 1.3Hz in fault mode."
      },
      {
        "number": "10",
        "name": "BD",
        "type": "passive",
        "description": "Connects to the drain of the internal blocking FET; bypass with at least 10uF ceramic capacitor to GND."
      },
      {
        "number": "11",
        "name": "BST",
        "type": "passive",
        "description": "Boot-strap pin supplying the main FET gate driver; decouple to LX with a 0.1uF ceramic capacitor."
      },
      {
        "number": "12",
        "name": "IN",
        "type": "power_in",
        "description": "DC power input pin (4V to 14V operating) with OVP and UVLO functions; connect an MLCC to ground to decouple high-frequency noise."
      },
      {
        "number": "13",
        "name": "BD",
        "type": "passive",
        "description": "Connects to the drain of the internal blocking FET; bypass with at least 10uF ceramic capacitor to GND."
      },
      {
        "number": "14",
        "name": "LX",
        "type": "passive",
        "description": "Switch node pin; connect to the external inductor."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin."
      },
      {
        "number": "16",
        "name": "BAT",
        "type": "input",
        "description": "Battery voltage sense pin."
      },
      {
        "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-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pins 10 and 13 are both named BD in the datasheet; the pinout figure was not available in the text, ; Datasheet is a preliminary application note (Rev 0.1). The CV pin description is terse; the threshol"
        ],
        "pages_sent": 15,
        "cost_usd": 0.1225,
        "at": "2026-10-26T19:25:14"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/da184dd51d68fb74e936ab103d895fab.pdf",
        "pages": 15,
        "sha256": "a3eb13df3fdd227f",
        "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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}