main
Ray Set visibility: public e461a2e 12d ago
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  "slug": "lm29151r-5-0",
  "title": "LM29151R-5.0",
  "brief": "HTC Korea TAEJIN Tech Linear Voltage Regulators (LDO), TO-263-5. 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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    "mpn": "LM29151R-5.0",
    "manufacturer": "HTC Korea TAEJIN Tech",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6858ebcd634d43c21d5b459a005f9dd5.pdf",
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      "lbr": "lm29151r-5-0.lbr"
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    "distributor_links": {
      "lcsc": "C262537",
      "digikey": "5536-LM29151R-5.0TR-ND"
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      "checked_at": "2026-10-27T00:09:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5536-LM29151R-5.0TR-ND",
        "status": "found",
        "lifecycle": "Active"
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      "mouser": {
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        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input for ON/OFF control; logic high (on) is 2.4V minimum and logic low (off) is 0.8V maximum, with the pin rated to 26V continuous (VEN max 26V, 30V per the enable description)."
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      {
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        "type": "power_in",
        "description": "Input supply; operating input voltage is up to 26V, with transient protection between -20V and +60V (60V limited to under 100 ms at 1% duty cycle)."
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      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator; ground pin current is the quiescent current, about 8mA at 750mA load."
      },
      {
        "number": "4",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage, 5.0V fixed for this variant (±1% initial tolerance); requires a minimum 10uF output capacitor at full load."
      },
      {
        "number": "5",
        "name": "FLG / ADJ",
        "type": "output",
        "description": "Error flag open-collector output on the LM29151 that pulls low when the output drops 5% below nominal and can sink 10mA; it is inoperative during over-temperature shutdown."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
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        "at": "2026-10-27T00:08:57"
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  "metadata": {
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      "Manufacturer": "HTC Korea TAEJIN Tech",
      "Package": "TO-263-5",
      "Category": "Power Management ICs",
      "Pins": "6"
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          "name": "Lead Temperature (Soldering, 5 sec)",
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          "name": "Junction Temperature",
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        {
          "name": "Thermal resistance heatsink case-to-sink",
          "symbol": "θCS",
          "kind": "thermal",
          "unit": "℃/W",
          "min": 0,
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          "max": 2,
          "conditions": "Heat sink thermal resistance term in thermal design formula",
          "source_page": 9,
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          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
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          "max": 1,
          "conditions": "IO = 10mA",
          "source_page": 6,
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        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
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        {
          "name": "Line Regulation",
          "symbol": "ΔVLINE",
          "kind": "electrical",
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          "min": null,
          "typ": 0.06,
          "max": 0.5,
          "conditions": "IO = 10mA, (VOUT+1V)≤VIN≤26V",
          "source_page": 6,
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        {
          "name": "Load Regulation",
          "symbol": "ΔVLOAD",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.2,
          "max": 1,
          "conditions": "VIN=VOUT+5V, 10mA≤IOUT≤IFULLOAD (Note 2,6)",
          "source_page": 6,
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        },
        {
          "name": "Output Voltage Temp. Coefficient",
          "symbol": "ΔVo/ΔT",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": null,
          "typ": 20,
          "max": 100,
          "conditions": "Output Voltage (Note 6)",
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        {
          "name": "Dropout Voltage",
          "symbol": "VDO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 80,
          "max": 200,
          "conditions": "ΔVOUT = -1%, IO =100mA",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Dropout Voltage",
          "symbol": "VDO",
          "kind": "electrical",
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          "min": null,
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          "max": null,
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          "source_page": 6,
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        {
          "name": "Dropout Voltage",
          "symbol": "VDO",
          "kind": "electrical",
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          "conditions": "ΔVOUT = -1%, IO =1.5A",
          "source_page": 6,
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        {
          "name": "Ground Current",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 8,
          "max": 22,
          "conditions": "IO =750mA, VIN =VOUT+1V",
          "source_page": 6,
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        {
          "name": "Ground Current",
          "symbol": "IGND",
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          "max": null,
          "conditions": "IO =1.5A",
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          "name": "Ground Pin Current at Dropout",
          "symbol": "IGNDDO",
          "kind": "electrical",
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          "min": null,
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          "conditions": "VIN =0.5V less than specified VOUT, IOUT =10mA",
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        {
          "name": "Output Leakage Current",
          "symbol": "IFLG (leak)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.01,
          "max": 2,
          "conditions": "VOH =26V",
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          "source": "datasheet"
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        {
          "name": "Output Low Voltage",
          "symbol": "VFLG (do)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 220,
          "max": 400,
          "conditions": "Device set for 5V. VIN =4.5V, IOL =250μA",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Upper Threshold Voltage",
          "symbol": "VFLG",
          "kind": "electrical",
          "unit": "mV",
          "min": 25,
          "typ": 40,
          "max": 60,
          "conditions": "Device set for 5V (Note 9)",
          "source_page": 6,
          "source": "datasheet"
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          "name": "Lower Threshold Voltage",
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          "kind": "electrical",
          "unit": "mV",
          "min": 75,
          "typ": 95,
          "max": 140,
          "conditions": "Device set for 5V (Note 9)",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "Device set for 5V (Note 9)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Enable Input Voltage Logic High (On)",
          "symbol": "VEN",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 7,
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        {
          "name": "Enable Input Voltage Logic Low (Off)",
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          "min": null,
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          "source_page": 7,
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        {
          "name": "Enable Pin Input Current",
          "symbol": "IEN",
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          "unit": "μA",
          "min": null,
          "typ": 100,
          "max": 750,
          "conditions": "VEN =26V",
          "source_page": 7,
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        {
          "name": "Enable Pin Input Current",
          "symbol": "IEN",
          "kind": "electrical",
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          "min": null,
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          "max": 5,
          "conditions": "VEN =0.8V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Regulator Output Current in Shutdown",
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          "symbol": "en",
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          "unit": "μVRMS",
          "min": null,
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          "min": null,
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          "conditions": "IL = 100mA, CL =33μF",
          "source_page": 6,
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