UC3846L-D16-T

{
  "slug": "uc3846l-d16-t",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC(Unisonic Tech) AC-DC Controllers & Regulators, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "uc3846l-d16-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "uc3846l-d16-t.step",
    "uc3846l-d16-t.lbr",
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    "uc3846l-d16-t-hero.overlay.json",
    "uc3846l-d16-t-etched.glb"
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  "component": {
    "mpn": "UC3846L-D16-T",
    "manufacturer": "UTC(Unisonic Tech)",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Power Supply Chip",
    "subcategory": "AC-DC Controllers & Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e9879ac0d1cb50d2d3d6984aacfd51fc.pdf",
    "parts": {
      "symbol": "uc3846l-d16-t.kicad_sym",
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      "model_3d_plain": "uc3846l-d16-t-etched.glb",
      "model_3d_step": "uc3846l-d16-t-etched.step",
      "model_3d_step_plain": "uc3846l-d16-t.step",
      "lbr": "uc3846l-d16-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C3008191"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T06:05:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "C/S SS",
        "type": "input",
        "description": "Current-limit adjust / soft-start pin, with a 50 mA maximum soft start sink current."
      },
      {
        "number": "2",
        "name": "VREF",
        "type": "power_out",
        "description": "Internal reference voltage output of 5.0 V min, 5.1 V typ, 5.2 V max at IO=1 mA, with 30 mA maximum reference output current."
      },
      {
        "number": "3",
        "name": "C/S-",
        "type": "input",
        "description": "Current-sense amplifier input (listed as forward input of current limiting), with an analog input range of -0.3 V to +VIN."
      },
      {
        "number": "4",
        "name": "C/S+",
        "type": "input",
        "description": "Current-sense amplifier input (listed as backward input of current limiting), with an analog input range of -0.3 V to +VIN."
      },
      {
        "number": "5",
        "name": "E/A+",
        "type": "input",
        "description": "Forward (non-inverting) input of the error amplifier, with an analog input range of -0.3 V to +VIN and common mode range of 0 to VIN-2 V."
      },
      {
        "number": "6",
        "name": "E/A-",
        "type": "input",
        "description": "Backward (inverting) input of the error amplifier, with an analog input range of -0.3 V to +VIN and common mode range of 0 to VIN-2 V."
      },
      {
        "number": "7",
        "name": "COMP",
        "type": "output",
        "description": "Output of the error amplifier, with 5 mA maximum output current."
      },
      {
        "number": "8",
        "name": "CT",
        "type": "passive",
        "description": "External timing capacitor connection that sets the oscillator frequency."
      },
      {
        "number": "9",
        "name": "RT",
        "type": "passive",
        "description": "External timing resistor connection that sets the oscillator frequency, with 5 mA maximum oscillator charging current."
      },
      {
        "number": "10",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Oscillator synchronization pin, with 5 mA maximum sync output current."
      },
      {
        "number": "11",
        "name": "A OUT",
        "type": "output",
        "description": "Dual totem-pole output A, rated for 500 mA source or sink current."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "13",
        "name": "VC",
        "type": "power_in",
        "description": "Collector supply for the output stage, with a 40 V maximum rating."
      },
      {
        "number": "14",
        "name": "B OUT",
        "type": "output",
        "description": "Dual totem-pole output B, rated for 500 mA source or sink current."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "DC supply input, with a 40 V maximum rating and under-voltage lockout start-up threshold of 8.0 V max."
      },
      {
        "number": "16",
        "name": "SHUTDOWN",
        "type": "input",
        "description": "Shutdown controller input with a 350 mV typical threshold and input range of 0 to VIN."
      }
    ],
    "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: Pin description table lists C/S- as 'Forward Input' and C/S+ as 'Backward Input', which appears reve; Electrical characteristics Note 1 says ground is 'Pin 13', but the pin table and the application cir; Pin types for CT, RT, SYNC and C/S SS are inferred from function descriptions. The datasheet does no"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0949,
        "at": "2026-10-23T06:04:31"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e9879ac0d1cb50d2d3d6984aacfd51fc.pdf",
        "pages": 10,
        "sha256": "5f227570b8d99fd5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "origin": "footprint origin = pad-pattern centre",
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}