UC2845BD1013TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2845bd1013tr",
  "title": "UC2845BD1013TR",
  "brief": "STMicroelectronics DC-DC Converters, SO-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "UC2845BD1013TR",
    "manufacturer": "STMicroelectronics",
    "package": "SO-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f02ad5bdd84749258a300c61a5d5e0e6.pdf",
    "parts": {
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      "lbr": "uc2845bd1013tr.lbr"
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    "distributor_links": {
      "lcsc": "C111203"
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output made available for loop compensation. Typical output high ~6.2V, output low ~0.8V; sources up to 0.5mA and sinks up to 2mA (min)."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Inverting input of the error amplifier. Normally connected to the switching power-supply output through a resistor divider; internal reference is 2.5V. Input bias current typ -0.1uA."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Current-sense input. A voltage proportional to inductor/switch current is applied here; the PWM uses this signal to terminate output-switch conduction. Maximum input threshold ~1.0V (Ipk = 1.0V/Rs)."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Oscillator timing pin. Connect RT from this pin to VREF and CT from this pin to GND to program oscillator frequency and maximum duty cycle. Operation up to 500kHz."
      },
      {
        "number": "5",
        "name": "GROUND",
        "type": "power_in",
        "description": "Combined control-circuitry and power ground return. All voltages are referenced to this pin."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "High-current totem-pole gate-driver output for an external power MOSFET. Sources and sinks peak currents up to 1A. Output is held low during UVLO."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply for the control IC (labeled Vi in the block diagram). UC2845B UVLO turn-on ~8.4V, turn-off ~7.6V. Absolute maximum 30V (self-limiting via internal 36V zener). Operating supply current typ 12mA; start-up current <0.5mA."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "Trimmed 5.0V reference output (5.00V typ, ±1% at 25°C, 50mA rated). Provides charging current for CT through RT and can supply external loads."
      }
    ],
    "provenance": {
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      "datasheet": {
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        "pages": 15,
        "sha256": "fedfd7362400f8b3",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
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        "seat": "z = 0",
        "extents_mm": [
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          4.9,
          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "1405b9faf3f7c42606a6ca04d62bd5f5e89be07c0bde0f1f936a26583ab67fdb",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SO-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
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    "info"
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  "discovery_triggers": [
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  "discovery_pitch": "UC2845BD1013TR (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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  "visibility": {
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  "variants": [
    {
      "mpn": "UC2845BD1013TR",
      "kind": "packaging"
    },
    {
      "mpn": "UC2845BN",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T13:28:55.965Z"
}