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Ray lm34936qpwprq1: specified limits as data (metadata.characteristics, 51 rows from the datasheet) 78492b4 16d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lm34936qpwprq1",
  "title": "LM34936QPWPRQ1",
  "brief": "Texas Instruments DC-DC Converters, TSSOP-28-EP. 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)",
    "lm34936qpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM34936QPWPRQ1",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-28-EP",
    "pin_count": 29,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm34936-q1",
    "parts": {
      "symbol": "lm34936qpwprq1.kicad_sym",
      "footprint": "lm34936qpwprq1.kicad_mod",
      "model_3d": "lm34936qpwprq1-hero.glb",
      "model_3d_plain": "lm34936qpwprq1.glb",
      "model_3d_step": "lm34936qpwprq1-etched.step",
      "model_3d_step_plain": "lm34936qpwprq1.step",
      "lbr": "lm34936qpwprq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2836673",
      "digikey": "296-LM34936QPWPRQ1TR-ND",
      "mouser": "595-LM34936QPWPRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T05:11:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-LM34936QPWPRQ1TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LM34936QPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN/UVLO",
        "type": "input",
        "description": "Enable pin: below 0.4 V the device is in low current shutdown, above 1.22 V the PWM function is enabled provided VCC exceeds the VCC UV threshold."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin to the IC; connect to a supply voltage between 4.2 V and 30 V."
      },
      {
        "number": "3",
        "name": "VISNS",
        "type": "input",
        "description": "VIN sense input; connect to the power stage input rail."
      },
      {
        "number": "4",
        "name": "MODE",
        "type": "input",
        "description": "Selects hiccup mode: 1.38 V to 2.22 V is CCM with hiccup enabled (RMODE to AGND = 93.1 kΩ), 2.6 V to VCC is CCM with hiccup disabled (200 kΩ or connect to VCC)."
      },
      {
        "number": "5",
        "name": "DITH",
        "type": "input",
        "description": "A capacitor to AGND sets dithering that modulates the oscillator frequency by 10% of the nominal RT frequency; grounding the pin disables dithering, and it is ignored in external Sync mode."
      },
      {
        "number": "6",
        "name": "RT/SYNC",
        "type": "input",
        "description": "Switching frequency programming pin: a resistor to AGND sets the switching frequency, and the pin can also synchronize the PWM controller to an external clock."
      },
      {
        "number": "7",
        "name": "SLOPE",
        "type": "passive",
        "description": "A capacitor to AGND provides the slope compensation ramp for stable current mode operation in both Buck and Boost mode."
      },
      {
        "number": "8",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start programming pin; a capacitor between SS and AGND sets the soft-start time."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "output",
        "description": "Output of the error amplifier; an external RC network between COMP and AGND compensates the feedback loop."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground of the IC."
      },
      {
        "number": "11",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin for output voltage regulation; connect a resistor divider from the converter output to FB."
      },
      {
        "number": "12",
        "name": "VOSNS",
        "type": "input",
        "description": "VOUT sense input; connect to the power stage output rail."
      },
      {
        "number": "13",
        "name": "ISNS(-)",
        "type": "input",
        "description": "Input or output current sense amplifier input; when the voltage across ISNS(+) and ISNS(-) reaches 50 mV a slow constant current loop regulates it to 50 mV, and shorting ISNS(+) and ISNS(-) disables the feature."
      },
      {
        "number": "14",
        "name": "ISNS(+)",
        "type": "input",
        "description": "Input or output current sense amplifier input; when the voltage across ISNS(+) and ISNS(-) reaches 50 mV a slow constant current loop regulates it to 50 mV, and shorting ISNS(+) and ISNS(-) disables the feature."
      },
      {
        "number": "15",
        "name": "CSG",
        "type": "input",
        "description": "Negative or ground input to the PWM current sense amplifier; connect directly to the low-side (ground) of the current sense resistor."
      },
      {
        "number": "16",
        "name": "CS",
        "type": "input",
        "description": "Positive input to the PWM current sense amplifier."
      },
      {
        "number": "17",
        "name": "PGOOD",
        "type": "output",
        "description": "Power-Good open-drain output that is pulled low when FB is outside a -9%/+10% regulation window around the 0.8-V VREF."
      },
      {
        "number": "18",
        "name": "SW2",
        "type": "passive",
        "description": "Boost side switching node."
      },
      {
        "number": "19",
        "name": "HDRV2",
        "type": "output",
        "description": "Output of the high-side gate driver; connect directly to the gate of the high-side MOSFET."
      },
      {
        "number": "20",
        "name": "BOOT2",
        "type": "passive",
        "description": "Bootstrap pin; an external capacitor is required between BOOT2 and SW2 to bias the high-side MOSFET gate driver."
      },
      {
        "number": "21",
        "name": "LDRV2",
        "type": "output",
        "description": "Output of the low-side gate driver; connect directly to the gate of the low-side MOSFET."
      },
      {
        "number": "22",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground of the IC; the high current ground connection to the low-side gate drivers."
      },
      {
        "number": "23",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the VCC bias regulator; connect a capacitor to ground."
      },
      {
        "number": "24",
        "name": "BIAS",
        "type": "power_in",
        "description": "Optional input to the VCC bias regulator; for VBIAS > 8 V the VCC regulator draws power from BIAS, which can reduce power loss at high VIN."
      },
      {
        "number": "25",
        "name": "LDRV1",
        "type": "output",
        "description": "Output of the low-side gate driver; connect directly to the gate of the low-side MOSFET."
      },
      {
        "number": "26",
        "name": "BOOT1",
        "type": "passive",
        "description": "Bootstrap pin; an external capacitor is required between BOOT1 and SW1 to bias the high-side MOSFET gate driver."
      },
      {
        "number": "27",
        "name": "HDRV1",
        "type": "output",
        "description": "Output of the high-side gate driver; connect directly to the gate of the high-side MOSFET."
      },
      {
        "number": "28",
        "name": "SW1",
        "type": "passive",
        "description": "Buck side switching node."
      },
      {
        "number": "29",
        "name": "PowerPAD",
        "type": "power_in",
        "description": "Exposed PowerPAD should be soldered to analog ground, with thermal vias to a PCB ground plane if possible for improved power dissipation."
      }
    ],
    "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 PowerPAD is the exposed thermal pad that should be soldered to analog ground. The datasheet does; The pin table combines the SW2/SW1, HDRV2/HDRV1, BOOT2/BOOT1 and LDRV2/LDRV1 rows and gives each pai; The pin-configuration figure labels this pin ISNS(±) while the pin table labels it ISNS(–). I used t",
          "exposed pad 29 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0724,
        "at": "2026-10-12T05:11:13"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm34936-q1",
        "pages": 41,
        "sha256": "4ca152db4a27eff3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm34936qpwprq1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm34936qpwprq1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1d532609337868b1812d55f5e9c3df7c869878fd6ab78de76f554113c2fe4f94",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-28-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "29"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4ca152db4a27eff3",
      "rows": [
        {
          "name": "VIN shutdown current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2.6,
          "max": 10,
          "conditions": "VEN/UVLO = 0 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VIN operating current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 4,
          "conditions": "VEN/UVLO = 2 V, VFB = 0.9 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC regulation voltage",
          "symbol": "VVCC(VIN)",
          "kind": "electrical",
          "unit": "V",
          "min": 6.95,
          "typ": 7.35,
          "max": 7.88,
          "conditions": "VBIAS = 0 V, VCC open",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC undervoltage lockout",
          "symbol": "VUV(VCC)",
          "kind": "electrical",
          "unit": "V",
          "min": 3.11,
          "typ": 3.27,
          "max": 3.43,
          "conditions": "VCC increasing",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC regulator output impedance",
          "symbol": "ROUT(VCC)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 8,
          "max": 16,
          "conditions": "IVCC = 30 mA, VIN = 4 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "BIAS switchover voltage",
          "symbol": "VBIAS(SW)",
          "kind": "electrical",
          "unit": "V",
          "min": 7.25,
          "typ": 8,
          "max": 8.75,
          "conditions": "VIN = 24 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Standby threshold",
          "symbol": "VEN(STBY)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.55,
          "typ": 0.82,
          "max": 0.97,
          "conditions": "EN/UVLO rising",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Standby source current",
          "symbol": "IEN(STBY)",
          "kind": "electrical",
          "unit": "µA",
          "min": 1,
          "typ": 2,
          "max": 3,
          "conditions": "VEN/UVLO = 1.1 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating threshold",
          "symbol": "VEN(OP)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.17,
          "typ": 1.22,
          "max": 1.29,
          "conditions": "EN/UVLO rising",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating hysteresis current",
          "symbol": "ΔIHYS(OP)",
          "kind": "electrical",
          "unit": "µA",
          "min": 2.15,
          "typ": 3.15,
          "max": 4.25,
          "conditions": "VEN/UVLO = 1.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Soft-start pullup current",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": 3.75,
          "typ": 5,
          "max": 6.35,
          "conditions": "VSS = 0 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Feedback reference voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.788,
          "typ": 0.8,
          "max": 0.812,
          "conditions": "FB = COMP",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency 1",
          "symbol": "fSW(1)",
          "kind": "electrical",
          "unit": "kHz",
          "min": 175,
          "typ": 200,
          "max": 225,
          "conditions": "RT = 40 kΩ",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency 2",
          "symbol": "fSW(2)",
          "kind": "electrical",
          "unit": "kHz",
          "min": 350,
          "typ": 390,
          "max": 430,
          "conditions": "RT = 20 kΩ",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Buck current limit threshold (valley)",
          "symbol": "VCS(BUCK)",
          "kind": "electrical",
          "unit": "mV",
          "min": 66,
          "typ": 80,
          "max": 94,
          "conditions": "VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Boost current limit threshold (peak)",
          "symbol": "VCS(BOOST)",
          "kind": "electrical",
          "unit": "mV",
          "min": 100,
          "typ": 120,
          "max": 140,
          "conditions": "VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Average current loop regulation target",
          "symbol": "VSNS",
          "kind": "electrical",
          "unit": "mV",
          "min": 43,
          "typ": 50,
          "max": 57,
          "conditions": "VISNS(-) = 24 V, sweep ISNS(+), VSS = 0.8 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Buck adaptive slope current",
          "symbol": "ISLOPE",
          "kind": "electrical",
          "unit": "µA",
          "min": 24,
          "typ": 30,
          "max": 35,
          "conditions": "VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Boost adaptive slope current",
          "symbol": "ISLOPE",
          "kind": "electrical",
          "unit": "µA",
          "min": 13,
          "typ": 17,
          "max": 21,
          "conditions": "VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Source current out of MODE pin",
          "symbol": "IMODE",
          "kind": "electrical",
          "unit": "µA",
          "min": 17,
          "typ": 20,
          "max": 23,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "CCM with hiccup threshold",
          "symbol": "VCCM_HIC",
          "kind": "electrical",
          "unit": "V",
          "min": 1.18,
          "typ": 1.28,
          "max": 1.38,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "CCM no hiccup threshold",
          "symbol": "VCCM",
          "kind": "electrical",
          "unit": "V",
          "min": 2.22,
          "typ": 2.4,
          "max": 2.6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "PGOOD sink current",
          "symbol": "ISINK(PGD)",
          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": 4.2,
          "max": 6.5,
          "conditions": "VPGOOD = 0.4 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VIN input bias voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input power stage voltage with external bias",
          "symbol": "VISNS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 30,
          "conditions": "BIAS ≥ 5 V or VIN ≥ 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bias supply voltage range (when VCC in regulation)",
          "symbol": "BIAS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage range",
          "symbol": "VOSNS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable voltage range",
          "symbol": "EN/UVLO",
          "kind": "recommended_operating",
          "unit": "V",
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