UC2846N

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2846n",
  "title": "UC2846N",
  "brief": "Texas Instruments AC-DC Controllers And Regulators, PDIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "uc2846n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC2846N",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc3846",
    "parts": {
      "symbol": "uc2846n.kicad_sym",
      "footprint": "uc2846n.kicad_mod",
      "model_3d": "uc2846n-hero.glb",
      "model_3d_plain": "uc2846n-etched.glb",
      "model_3d_step": "uc2846n-etched.step",
      "model_3d_step_plain": "uc2846n.step",
      "lbr": "uc2846n.lbr"
    },
    "distributor_links": {
      "lcsc": "C701461",
      "digikey": "296-11190-5-ND",
      "mouser": "595-UC2846N"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T20:59:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-11190-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2846N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "C/S SS",
        "type": "input",
        "description": "Current limit/soft-start programming pin, with a maximum soft-start sink current of 50 mA per the absolute maximum ratings."
      },
      {
        "number": "2",
        "name": "VREF",
        "type": "power_in",
        "description": "5.1-V reference voltage output that requires an external capacitor of 1 µF to 2.2 µF (2.2 µF nominal) and has a maximum reference output current of -30 mA."
      },
      {
        "number": "3",
        "name": "C/S-",
        "type": "input",
        "description": "Current sense comparator inverting input; analog inputs are limited to -0.3 V to +VIN and the maximum differential current-sense signal is 1.2 V."
      },
      {
        "number": "4",
        "name": "C/S+",
        "type": "input",
        "description": "Current sense comparator non-inverting input; analog inputs are limited to -0.3 V to +VIN and the maximum differential current-sense signal is 1.2 V."
      },
      {
        "number": "5",
        "name": "E/A+",
        "type": "input",
        "description": "Error amplifier non-inverting input (the pin table misprints this as inverting), with a common-mode range of 0 V to VIN - 2 V."
      },
      {
        "number": "6",
        "name": "E/A-",
        "type": "input",
        "description": "Error amplifier inverting input, with analog inputs limited to -0.3 V to +VIN and a common-mode range of 0 V to VIN - 2 V."
      },
      {
        "number": "7",
        "name": "COMP",
        "type": "bidirectional",
        "description": "Error amplifier output and input to the PWM comparator, with an absolute maximum output current of -5 mA."
      },
      {
        "number": "8",
        "name": "CT",
        "type": "input",
        "description": "Oscillator frequency programming capacitor pin; CT together with RT sets the oscillator frequency and output deadtime."
      },
      {
        "number": "9",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency programming resistor pin (labelled CR in the pin table); oscillator charging current is rated at a maximum of 5 mA."
      },
      {
        "number": "10",
        "name": "Sync",
        "type": "bidirectional",
        "description": "Synchronization I/O for a master controller output or slave controller input; sync output current is limited to -5 mA and the sync output swings between 2.3-2.5 V low and 3.9-4.35 V high."
      },
      {
        "number": "11",
        "name": "A Out",
        "type": "output",
        "description": "PWM drive signal output A, complementary to output B (pin 14); output current source or sink is rated at 500 mA maximum."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference node to which all signals are referenced."
      },
      {
        "number": "13",
        "name": "VC",
        "type": "power_in",
        "description": "Bias supply input for the output stage, with a collector supply voltage limit of 40 V and to be connected through a resistance directly to VIN."
      },
      {
        "number": "14",
        "name": "B Out",
        "type": "output",
        "description": "PWM drive signal output B, complementary to output A (pin 11); output current source or sink is rated at 500 mA maximum."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Bias supply input with a supply voltage limit of 40 V, decoupled with low-ESR ceramic capacitance placed as close as possible to GND."
      },
      {
        "number": "16",
        "name": "Shutdown",
        "type": "input",
        "description": "External shutdown signal input; a signal greater than 350 mV latches the outputs off, with analog inputs limited to -0.3 V to +VIN."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin function table lists both E/A+ (pin 5) and E/A- (pin 6) as 'Error amplifier inverting input'; The pin table names pin 9 'CR' while the pinout figure and layout text use 'RT'. Recorded as RT; bot; The pin table note reads 'Pin11 and P14 are complementary', which is a typo for pin 14. Interpreted "
        ],
        "pages_sent": 24,
        "cost_usd": 0.0994,
        "at": "2026-10-15T20:59:28"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3846",
        "pages": 24,
        "sha256": "0d1e2750f80a16be",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "units": "mm",
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        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "PDIP-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0d1e2750f80a16bebb7fd046395e2e17e2c4fbd7cc1cdd2a12243705f6908869",
      "rows": [
        {
          "name": "Supply Voltage (Pin 15)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Collector Supply Voltage (Pin 13)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Current, Source or Sink (Pins 11, 14)",
          "symbol": "",
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          "unit": "mA",
          "min": null,
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        },
        {
          "name": "Analog Inputs (Pins 3, 4, 5, 6, 16)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as +VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference Output Current (Pin 2)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Sync Output Current (Pin 10)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Error Amplifier Output Current (Pin 7)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft Start Sink Current (Pin 1)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Charging Current (Pin 9)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation at TA = 25°C",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "TA = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation at TC = 25°C",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "TC = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VREF Terminal External Capacitance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": 2.2,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (Reference)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 5.05,
          "typ": 5.1,
          "max": 5.15,
          "conditions": "TJ = 25°C, IO = 1 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 20,
          "conditions": "VIN = 8 V to 40 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 3,
          "max": 15,
          "conditions": "IL = 1 mA to 10 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line, Load, and Total Output Variation (Reference)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": null,
          "max": 5.2,
          "conditions": "Over temperature range (1)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Output Current (Reference)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": -45,
          "conditions": "VREF = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Voltage Stability (Oscillator)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 2,
          "conditions": "VIN = 8 V to 40 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Initial Accuracy (Oscillator)",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 39,
          "typ": 43,
          "max": 47,
          "conditions": "TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sync Output High Level",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.9,
          "typ": null,
          "max": 4.35,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sync Output Low Level",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": 2.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sync Input High Level",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.9,
          "typ": null,
          "max": null,
          "conditions": "Pin 8 = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sync Input Low Level",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "Pin 8 = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sync Input Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.3,
          "max": 1.5,
          "conditions": "Sync voltage = 3.9 V, Pin 8 = 0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 0.5,
          "max": 5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -0.6,
          "max": -1,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 40,
          "max": 250,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Common Mode Range (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "VIN = 8 V to 40 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Open Loop Voltage Gain (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 80,
          "typ": 105,
          "max": null,
          "conditions": "ΔVO = 1.2 to 3 V, VCM = 2 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Unity Gain Bandwidth (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.7,
          "typ": null,
          "max": 1,
          "conditions": "TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "CMRR (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 75,
          "typ": 100,
          "max": null,
          "conditions": "VCM = 0 V to 38 V, VIN = 40 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "PSRR (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 80,
          "typ": 105,
          "max": null,
          "conditions": "VIN = 8 V to 40 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Sink Current (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": null,
          "max": 6,
          "conditions": "VID = –15 mV to -5 V, VPIN7 = 1.2 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Source Current (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.4,
          "typ": null,
          "max": -0.5,
          "conditions": "VID = 15 mV to -5 V, VPIN7 = 2.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High Level Output Voltage (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.3,
          "typ": null,
          "max": 4.6,
          "conditions": "RL = 15 kΩ (Pin 7)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low Level Output Voltage (Error Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": 1,
          "conditions": "RL = 15 kΩ (Pin 7)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Amplifier Gain (Current Sense Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": 2.75,
          "max": 3,
          "conditions": "VPIN3 = 0 V, Pin 1 open",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Differential Input Signal (VPIN 4 - VPIN 3)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.1,
          "typ": null,
          "max": 1.2,
          "conditions": "Pin 1 open; RL = 15 kΩ (Pin 7)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage (Current Sense Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 25,
          "conditions": "VPIN1 = 0.5 V, Pin 7 open",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current (Current Sense Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -2.5,
          "max": -10,
          "conditions": "VPIN1 = 0.5 V, Pin 7 open",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Common Mode Range (Current Sense Amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Delay to Outputs (Current Sense)",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": 500,
          "conditions": "TJ = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current Limit Offset",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.45,
          "typ": 0.5,
          "max": 0.55,
          "conditions": "VPIN3 = 0 V, VPIN4 = 0 V, Pin 7 open",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current Limit Input Bias Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": -10,
          "max": -30,
          "conditions": "VPIN5 = VREF, VPIN6 = 0 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Threshold Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": 250,
          "typ": 350,
          "max": 400,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum Latching Current (IPIN1)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "Current into Pin 1 ensured to latch circuit in shutdown state",
          "source_page": 6,
          "source": "datasheet"
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