HT5429AREZ

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht5429arez",
  "title": "HT5429AREZ",
  "brief": "HTCSEMI DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
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  "component": {
    "mpn": "HT5429AREZ",
    "manufacturer": "HTCSEMI",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8b1ff9ca8498db00a117e7e26796d3ad.pdf",
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      "lbr": "ht5429arez.lbr"
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    "distributor_links": {
      "lcsc": "C28646421"
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    "distributor_check": {
      "checked_at": "2026-10-27T05:23:11Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
      {
        "number": "1",
        "name": "GATE",
        "type": "output",
        "description": "Power-stage gate drive output that switches the external N-channel MOSFET."
      },
      {
        "number": "2",
        "name": "SENS",
        "type": "input",
        "description": "The voltage between SENS and IN sets the input current limit through an external sense resistor, with a typical threshold of 57 mV."
      },
      {
        "number": "3",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply pin; the recommended operating supply is 3.0 V to 20 V, with an absolute maximum of 36 V."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin where an external capacitor to GND is charged by a 5 µA source, and leaving it open disables soft-start."
      },
      {
        "number": "5",
        "name": "COMP",
        "type": "passive",
        "description": "Error-amplifier compensation pin, where a capacitor and resistor in series to GND stabilize the control loop."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_out",
        "description": "Internal bias supply output that requires a 2.2 µF ceramic capacitor placed as close to the pin as possible."
      },
      {
        "number": "7",
        "name": "FB",
        "type": "input",
        "description": "Feedback voltage input with a 1.25 V reference, connected to an external resistor divider."
      },
      {
        "number": "8",
        "name": "EN",
        "type": "input",
        "description": "Enable pin where high turns the chip on and low turns it off, and it must not be left floating."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground connected to the thermal pad of the ESOP8 package."
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        "pages": 8,
        "sha256": "925c355fc4bd463a",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
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  "metadata": {
    "specs": {
      "Manufacturer": "HTCSEMI",
      "Package": "ESOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    },
    "characteristics": {
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        {
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        {
          "name": "Junction temperature",
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        {
          "name": "Storage temperature",
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        {
          "name": "VOUT-VIN differential",
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        },
        {
          "name": "Undervoltage lockout threshold",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.9,
          "max": null,
          "conditions": "VIN Rising",
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        {
          "name": "UVLO hysteresis",
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          "unit": "mV",
          "min": null,
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          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "C=10nF, VIN=12V, -40℃<T<85℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "VEN = 0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
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          "typ": 660,
          "max": null,
          "conditions": "VFB = 1.4V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency",
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          "unit": "kHz",
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          "max": null,
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        {
          "name": "Minimum off time",
          "symbol": "TON",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VFB = 0V",
          "source_page": 3,
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        {
          "name": "Minimum on time",
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          "kind": "timing",
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          "max": null,
          "conditions": "VFB = 1.4V",
          "source_page": 3,
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        },
        {
          "name": "EN high turn-on threshold",
          "symbol": "EN-ON",
          "kind": "electrical",
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          "name": "EN low threshold",
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          "name": "Soft-start current",
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          "typ": 5.1,
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        {
          "name": "FB threshold voltage",
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          "kind": "electrical",
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          "min": 1.23,
          "typ": 1.25,
          "max": 1.27,
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        {
          "name": "FB bias current",
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          "kind": "electrical",
          "unit": "nA",
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          "typ": -100,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "Thermal shutdown",
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          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current limit",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 11.4,
          "max": null,
          "conditions": "RSENSE=5m",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current limit",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 5.7,
          "max": null,
          "conditions": "RSENSE=10m",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Input current limit threshold",
          "symbol": "VCL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 57,
          "max": null,
          "conditions": "VIN-SENS",
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          "source": "datasheet"
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        {
          "name": "Input current limit time",
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          "unit": "μs",
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          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "HT5429AREZ (HTCSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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