STI3470

{
  "schema_version": 1,
  "type": "component",
  "slug": "sti3470",
  "title": "STI3470",
  "brief": "TMI DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "sti3470"
  ],
  "component": {
    "mpn": "STI3470",
    "manufacturer": "TMI",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ae553839ffe4e8f700166be4e0ecc0d5.pdf",
    "parts": {
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      "footprint": "sti3470.kicad_mod",
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      "model_3d_plain": "sti3470.glb",
      "model_3d_step": "sti3470-etched.step",
      "model_3d_step_plain": "sti3470.step",
      "lbr": "sti3470.lbr"
    },
    "distributor_links": {
      "lcsc": "C478938"
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "passive",
        "description": "Bootstrap pin. A 0.1uF capacitor is connected between LX and BS to form a floating supply for the high-side switch driver. Absolute max 25V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Connect to the ground plane with a low-impedance path."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Adjustable version feedback input. Connect to the center of an external resistor divider from VOUT. Regulated to the internal 0.6V reference (0.588V/0.600V/0.612V)."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive to logic-high (>=1.5V) to enable the IC; drive to logic-low (<=0.3V) to disable and enter micro-power shutdown. Absolute max 23V."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Power supply input pin. Operating range 3.5V-18V; absolute max 23V. Bypass with a low-ESR ceramic capacitor (typically 22uF) close to the pin."
      },
      {
        "number": "6",
        "name": "LX",
        "type": "output",
        "description": "Switching node. Internal high-side (120mOhm) and low-side (80mOhm) MOSFET common node. Connect to the external inductor; also references the BS bootstrap capacitor. Absolute max 23V."
      }
    ],
    "provenance": {
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        "url": "https://datasheet.lcsc.com/datasheet/pdf/ae553839ffe4e8f700166be4e0ecc0d5.pdf",
        "pages": 13,
        "sha256": "2fb3b7dd78ed2071",
        "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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    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-6@sha256:f341c73aac9dcb55",
      "mark": "drawn"
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        "seat": "z = 0",
        "extents_mm": [
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          2.9,
          1.55
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TMI",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2fb3b7dd78ed2071",
      "rows": [
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          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 18,
          "conditions": "",
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        },
        {
          "name": "OVP Threshold",
          "symbol": "",
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          "unit": "V",
          "min": 18.2,
          "typ": 19,
          "max": 19.6,
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        },
        {
          "name": "UVLO Threshold",
          "symbol": "",
          "kind": "electrical",
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          "min": null,
          "typ": 3,
          "max": 3.4,
          "conditions": "",
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        },
        {
          "name": "Supply Current in Operation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": 0.8,
          "conditions": "VEN=2.0V, VFB=1.1V",
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        },
        {
          "name": "Supply Current in Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "VEN=0 or EN=GND",
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        },
        {
          "name": "Regulated Feedback Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.588,
          "typ": 0.6,
          "max": 0.612,
          "conditions": "TA = 25°C, 3.5V ≤ VIN ≤ 18V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-Side Switch Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0,
          "max": 10,
          "conditions": "VEN=0V, VLX=0V",
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        },
        {
          "name": "Upper Switch Current Limit",
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          "conditions": "Minimum Duty Cycle",
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        },
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          "name": "Oscillation Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 540,
          "typ": 600,
          "max": 660,
          "conditions": "VFB=0.6V",
          "source_page": 4,
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        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
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          "max": 95,
          "conditions": "",
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          "name": "Minimum On-Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 60,
          "max": 90,
          "conditions": "",
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        },
        {
          "name": "Input Supply Voltage, EN",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 23,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "LX Voltages",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 23,
          "conditions": "",
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        },
        {
          "name": "FB Voltage",
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          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
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        },
        {
          "name": "BS Voltage",
          "symbol": "",
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          "unit": "V",
          "min": -0.6,
          "typ": null,
          "max": 25,
          "conditions": "",
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        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Junction Temperature",
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          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 2,
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        {
          "name": "Power Dissipation",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 600,
          "conditions": "",
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          "name": "Lead Temperature (Soldering)",
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          "kind": "absolute_maximum",
          "unit": "°C",
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          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10s",
          "source_page": 2,
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        {
          "name": "Voltage Range IN",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "TJ Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model, all pins",
          "symbol": "VESD_HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "JEDEC JS-001",
          "source_page": 3,
          "source": "datasheet"
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          "name": "ESD Charge Device Model, all pins",
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          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
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          "typ": 120,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Low-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "",
          "source_page": 4,
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          "name": "EN High Level Input Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": null,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "EN Low Level Input Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "Note 4",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Thermal Shutdown Hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "Note 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 130,
          "max": null,
          "conditions": "Note 3: JESD51-7, 4-layer PCB",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case(top) thermal resistance",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "Note 3: JESD51-7, 4-layer PCB",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "STI3470 (TMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "updated_at": "2026-09-25T08:35:45.713Z"
}