TP4055

{
  "schema_version": 1,
  "type": "component",
  "slug": "tp4055",
  "title": "TP4055",
  "brief": "TOPPOWER Nanjing Extension Microelectronics Battery Management, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tp4055"
  ],
  "component": {
    "mpn": "TP4055",
    "manufacturer": "TOPPOWER Nanjing Extension Microelectronics",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e735bf92c1e6d5e226534a20ad5390bb.pdf",
    "parts": {
      "symbol": "tp4055.kicad_sym",
      "footprint": "tp4055.kicad_mod",
      "model_3d": "tp4055-etched.glb",
      "model_3d_plain": "tp4055.glb",
      "model_3d_step": "tp4055-etched.step",
      "model_3d_step_plain": "tp4055.step",
      "lbr": "tp4055.lbr"
    },
    "distributor_links": {
      "lcsc": "C28441"
    },
    "pins": [
      {
        "number": "1",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge status output. Pulled low by an internal switch while charging is in progress; high-impedance otherwise. Outputs a ~0.5-2 s pulse (with 10 uF at BAT) when no battery is connected."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground terminal / device reference."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery connection pin. Supplies charge current to the Li-ion cell and regulates the final float voltage to 4.2 V via an internal precision divider (disconnected in shutdown). Bypass with 10 uF; absolute current 500 mA."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive input supply, 4 V to 9 V (abs max -0.3 V to 9 V). Bypass with at least 10 uF. When VCC drops within 30 mV of VBAT the part enters low-power sleep (IBAT < 1 uA)."
      },
      {
        "number": "5",
        "name": "PROG",
        "type": "bidirectional",
        "description": "Charge-current program, monitor, and shutdown pin. A 1% resistor RPROG to GND sets IBAT (e.g. 1.66 kOhm -> 500 mA); pin sits at 1 V in constant-current mode. Leaving RPROG open lets an internal 2.5 uA source pull the pin above the 2.7 V shutdown threshold, stopping charge and reducing supply current to ~40 uA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e735bf92c1e6d5e226534a20ad5390bb.pdf",
        "pages": 9,
        "sha256": "051a3c3b2441467b",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "tp4055.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tp4055-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d07567ea8a88fd9caf9e0ffac806ce62a6aefc9b84b3d7893eb8bcdffe1b60da",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TOPPOWER Nanjing Extension Microelectronics",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tp4055"
  ],
  "discovery_pitch": "TP4055 (TOPPOWER Nanjing Extension Microelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tp4055.kicad_sym",
    "tp4055.kicad_mod",
    "tp4055.glb",
    "tp4055.step",
    "tp4055.lbr",
    "docs/hero.png",
    "docs/tp4055-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tp4055-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "TP4055-42-SOT235",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T11:19:57.161Z"
}