4056H

{
  "schema_version": 1,
  "type": "component",
  "slug": "4056h",
  "title": "4056H",
  "brief": "HL Battery Management, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "4056h"
  ],
  "component": {
    "mpn": "4056H",
    "manufacturer": "HL",
    "package": "ESOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905190478393344",
    "parts": {
      "symbol": "4056h.kicad_sym",
      "footprint": "4056h.kicad_mod",
      "model_3d": "4056h-etched.glb",
      "model_3d_plain": "4056h.glb",
      "model_3d_step": "4056h-etched.step",
      "model_3d_step_plain": "4056h.step",
      "lbr": "4056h.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature sense input. Connect to the mid-point of an NTC/resistor divider from VCC; charging pauses when V(TEMP) is outside 30%*VCC to 60%*VCC. Tie to GND to disable temperature monitoring."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "bidirectional",
        "description": "Constant-current programming pin and charge-current monitor. A resistor RPROG from PROG to GND sets IBAT (0.82K -> 1000mA, 2K -> 450mA). Pin regulates to ~1.0V in current mode; floating PROG shuts the charger down."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. The exposed thermal pad on the package underside is also connected to GND and should be soldered to a copper heat-spreading area."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input. Nominal operating voltage 5V; absolute maximum 30V, with input OVP shutdown at ~6.5V (450mV hysteresis). UVLO threshold ~3.80V."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Single-cell Li-Ion battery connection. Sources up to 1A charge current, regulates to 4.2V float (4056H-42 option). Auto-recharge threshold is 95mV below VFLOAT; sleep-mode leakage <0.1uA when VCC is removed. Requires ~10uF bypass to GND."
      },
      {
        "number": "6",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain, active-low charge-complete indicator. Pulls low (VOL <=0.5V @ 5mA) when the battery is fully charged and the charger is in standby; high-impedance otherwise. Typically drives a green LED to VCC through a series resistor."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain, active-low charging status output. Pulls low (VOL <=0.5V @ 5mA) while charging is in progress; high-impedance when charging is complete or the chip is in fault/standby. Typically drives a red LED to VCC."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input (Schmitt). Drive high (up to 28V tolerant) to enable charging; drive low to place the device in shutdown (battery leakage <0.1uA)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905190478393344",
        "pages": 10,
        "sha256": "381cd0b928324486",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "4056h.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "4056h-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b3a0eded6cf203b9bcc7726897516383dbb644f6753bfb4b2fd36f85ab0c33fb",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HL",
      "Package": "ESOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "4056H-42ES",
      "kind": "packaging"
    },
    {
      "mpn": "4056H-42DF8",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "4056h"
  ],
  "discovery_pitch": "4056H (HL) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "4056h.kicad_sym",
    "4056h.kicad_mod",
    "4056h.glb",
    "4056h.step",
    "4056h.lbr",
    "docs/hero.png",
    "docs/4056h-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T14:38:42.744Z"
}