PSC2945

{
  "schema_version": 1,
  "type": "component",
  "slug": "psc2945",
  "title": "PSC2945",
  "brief": "Shanghai Prisemi Elec Battery Management, QFN-24L(4x4). 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)",
    "psc2945",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "PSC2945",
    "manufacturer": "Shanghai Prisemi Elec",
    "package": "QFN-24L(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590893946954731520",
    "parts": {
      "symbol": "psc2945.kicad_sym",
      "footprint": "psc2945.kicad_mod",
      "model_3d": "psc2945-hero.glb",
      "model_3d_plain": "psc2945-etched.glb",
      "model_3d_step": "psc2945-etched.step",
      "model_3d_step_plain": "psc2945.step",
      "lbr": "psc2945.lbr"
    },
    "distributor_links": {
      "lcsc": "C5162519"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T18:26:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave this pin unconnected."
      },
      {
        "number": "2",
        "name": "DP",
        "type": "bidirectional",
        "description": "Positive data-port for the USB transceiver (labelled D+ in the pin-configuration figure)."
      },
      {
        "number": "3",
        "name": "DM",
        "type": "bidirectional",
        "description": "Negative data-port for the USB transceiver (labelled D- in the pin-configuration figure)."
      },
      {
        "number": "4",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charge status output that indicates charger status, and reads HIGH when charging is disabled."
      },
      {
        "number": "5",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock input that must be pulled up to the logic rail through a 10 kΩ resistor."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface data line that must be pulled up to the logic rail through a 10 kΩ resistor."
      },
      {
        "number": "7",
        "name": "INT",
        "type": "output",
        "description": "Open-drain interrupt output that sends a pulse to the host to report charger status and faults."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave this pin unconnected."
      },
      {
        "number": "9",
        "name": "CEB",
        "type": "input",
        "description": "Active-low charge enable input: charging is enabled when driven low and charging plus the VSYS regulator are disabled when high."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave this pin unconnected."
      },
      {
        "number": "11",
        "name": "TS",
        "type": "input",
        "description": "Temperature qualification voltage input; connect an NTC thermistor between TS and GND (103AT-2 preferred)."
      },
      {
        "number": "12",
        "name": "QONB",
        "type": "bidirectional",
        "description": "BATFET enable/reset control input with internal pull-up; holding it low for about 430 ms turns on BATFET and exits ship mode."
      },
      {
        "number": "13",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery connection to the positive terminal of the battery pack, with the internal Q4 MOSFET between VBAT and VSYS; connect 22 µF x2 close to this pin."
      },
      {
        "number": "14",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery connection to the positive terminal of the battery pack, with the internal Q4 MOSFET between VBAT and VSYS; connect 22 µF x2 close to this pin."
      },
      {
        "number": "15",
        "name": "VSYS",
        "type": "power_out",
        "description": "System power supply output; connect 22 µF x2 close to the VBAT pin per the datasheet."
      },
      {
        "number": "16",
        "name": "VSYS",
        "type": "power_out",
        "description": "System power supply output; connect 22 µF x2 close to the VBAT pin per the datasheet."
      },
      {
        "number": "17",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground for the high-current converter node, to be connected directly to the input and output capacitor grounds with a single-point connection to analog GND."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground for the high-current converter node, to be connected directly to the input and output capacitor grounds with a single-point connection to analog GND."
      },
      {
        "number": "19",
        "name": "SW",
        "type": "output",
        "description": "Switching node connected to the output inductor, internally tied to the high-side NMOS source and low-side NMOS drain."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "output",
        "description": "Switching node connected to the output inductor, internally tied to the high-side NMOS source and low-side NMOS drain."
      },
      {
        "number": "21",
        "name": "BTST",
        "type": "power_out",
        "description": "Positive supply for the PWM high-side driver, connected internally to the anode of the bootstrap diode."
      },
      {
        "number": "22",
        "name": "REGN",
        "type": "power_out",
        "description": "PWM low-side driver positive supply output, connected internally to the cathode of the bootstrap diode."
      },
      {
        "number": "23",
        "name": "PMID",
        "type": "power_out",
        "description": "Input to the charge regulator; connect a 22 µF ceramic capacitor from PMID to analog GND."
      },
      {
        "number": "24",
        "name": "VBUS",
        "type": "power_in",
        "description": "Charger input voltage; place a 1 µF ceramic capacitor from VBUS to GND as close to the IC as possible."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 exposed thermal pad is described on page 4 (solder to board, star-connect vias to GND) but is no; Pin 2 and pin 3 are named DP and DM in the pin-function table but D+ and D- in the pin-configuration; PMID is typed 'O' in the pin-function table but described as a 'power input to the charge regulator'",
          "exposed pad 25 added from the footprint"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0565,
        "at": "2026-10-18T18:24:51"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590893946954731520",
        "pages": 6,
        "sha256": "49022ed5b6488a91",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f7d256794c4147daf24dcae0554fae18510315e565ad1e239b475be7fef80d8b",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "psc2945-etched.step",
        "role": "eda",
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        "units": "mm",
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        "sha256": "aee5d9a34f36e4d03cd878bf775445c5eba7a30cc989e37b393c6ac88938f817",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Prisemi Elec",
      "Package": "QFN-24L(4x4)",
      "Category": "Power Management (PMIC)",
      "Pins": "25"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "49022ed5b6488a91b3f848ae6901d357dce328b72f9638d31ec18de1c0a5593e",
      "rows": [
        {
          "name": "Absolute Maximum Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Input Operating Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 13.9,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage source range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 12,
          "conditions": "Supports 3.5-12V input voltage sources, including standard USB host port and USB charging port",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Minimum system voltage (programmable)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.55,
          "typ": null,
          "max": null,
          "conditions": "System regulated slightly above battery voltage, does not drop below minimum system voltage",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Charge Voltage Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "25℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Charge Current Regulation Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -7.5,
          "typ": null,
          "max": 7.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Fast-charge mode charging current",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Fully integrated switch-mode charger, Mode 3A Charger",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Battery discharge MOSFET resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "25mΩ Battery Discharge MOSFET (printed as a feature; no typ/max label)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Battery leakage current in ship mode",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Low battery leakage current to support ship mode (printed as a feature; no typ/max label)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Battery leakage current in standby mode",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "Low battery leakage current in standby mode (printed as a feature; no typ/max label)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "USB OTG boost output voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "5V, 2A Boost Mode for USB OTG",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "USB OTG boost output current",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "5V, 2A Boost Mode for USB OTG",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "External inductor value",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µH",
          "min": 1,
          "typ": null,
          "max": 2.2,
          "conditions": "Small footprint 1-2.2μH external inductor",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "VBUS input capacitor",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "Ceramic capacitor from VBUS to GND, placed as close as possible to IC",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "PMID input capacitor",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": null,
          "typ": 22,
          "max": null,
          "conditions": "Ceramic capacitor from PMID to analog GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "QONB pull-down time to turn on BATFET and exit ship mode",
          "symbol": "",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 430,
          "max": null,
          "conditions": "Pull down QONB for about 430ms",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "PSC2945 (Shanghai Prisemi Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}