H9108

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  "type": "component",
  "slug": "h9108",
  "title": "H9108",
  "brief": "Shanghai Siproin Microelectronics DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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    "pmic",
    "h9108"
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  "component": {
    "mpn": "H9108",
    "manufacturer": "Shanghai Siproin Microelectronics",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e9ce3bcf6d237f75f2888037359496cc.pdf",
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      "lbr": "h9108.lbr"
    },
    "distributor_links": {
      "lcsc": "C411008"
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "passive",
        "description": "Bootstrap pin for the high-side N-MOSFET gate driver. A bootstrap capacitor (typically 22nF ceramic) is connected between BS and SW to form a floating supply that boosts the high-side switch gate above VIN."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Should be connected to a large copper area for thermal dissipation and to serve as the return for the input capacitor, output capacitor, and feedback divider."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the error amplifier. Connect to the center tap of an external resistor divider from VOUT to GND; the regulator servos FB to the internal 0.6V reference (VOUT = 0.6V x (R1+R2)/R2)."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive high (VENH >= 1.4V) to enable the converter; drive low (VENL <= 0.9V) to disable and enter micro-power shutdown (~4uA). Can be tied to VIN through a pull-up resistor (e.g. 100k) for auto-start."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Power supply input, 4V to 18V (absolute max 18V, -0.3V min). Bypass with a low-ESR ceramic capacitor placed close to the pin (typ. 22uF)."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Switch node output. Common drain of the internal high-side and low-side MOSFETs; connect to the external inductor. Rated -0.3V to (VIN+0.5V); high-side RDS(on) ~100mOhm, low-side ~70mOhm."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e9ce3bcf6d237f75f2888037359496cc.pdf",
        "pages": 10,
        "sha256": "d888f77e06c51893",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-6@sha256:f341c73aac9dcb55",
      "mark": "drawn"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Siproin Microelectronics",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d888f77e06c51893",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN Voltage High",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "EN Voltage Low",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "",
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        },
        {
          "name": "Regulated Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.588,
          "typ": 0.6,
          "max": 0.612,
          "conditions": "TA = 25℃, 4V≤VIN ≤18V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Current in Operation",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": 0.6,
          "conditions": "VEN=3.0V, VFB=1.1V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Current in Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "VEN =0 or EN = GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
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        },
        {
          "name": "Low-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "",
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        },
        {
          "name": "High-Side Switch Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "uA",
          "min": 0,
          "typ": null,
          "max": 10,
          "conditions": "VEN=0V, VSW=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Upper Switch Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "Minimum Duty Cycle",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillation Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 92,
          "conditions": "VFB=0.6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum On-Time",
          "symbol": "",
          "kind": "timing",
          "unit": "nS",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Off-Time",
          "symbol": "",
          "kind": "timing",
          "unit": "nS",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Thermal Shutdown",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Thermal Hysteresis",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "FB Voltages",
          "symbol": "VFB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
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        {
          "name": "Operating Temperature Range",
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          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
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        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering, 10s)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "Soldering, 10s",
          "source_page": 3,
          "source": "datasheet"
        }
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  "discovery_pitch": "H9108 (Shanghai Siproin Microelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
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  "updated_at": "2026-09-24T21:30:21.483Z"
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