LMR51420XDDCR

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  "slug": "lmr51420xddcr",
  "title": "LMR51420XDDCR",
  "brief": "Texas Instruments DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "LMR51420XDDCR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
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    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground terminal connected to the low-side FET source; must be connected to system ground with the shortest possible path to the input bypass capacitor."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "power_out",
        "description": "Switching output node connected to the high-side FET source and low-side FET drain; connect this pin to the power inductor."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input terminal for internal bias LDO and high-side FET; connect directly to input supply with input bypass capacitors."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for voltage regulation through external resistor divider; never short to ground during operation."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Precision enable input for ON/OFF control with HIGH = on and LOW = off; cannot be left floating and allows adjustable UVLO through external resistor divider."
      },
      {
        "number": "6",
        "name": "CB",
        "type": "power_out",
        "description": "Bootstrap capacitor connection for high-side FET gate driver; connect a 100-nF high-quality ceramic capacitor from this pin to the SW pin."
      }
    ],
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
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    "characteristics": {
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          "name": "VIN quiescent current (non-switching)",
          "symbol": "IQ(VIN)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 40,
          "max": 65,
          "conditions": "VEN = 3 V, PFM variant only",
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        {
          "name": "VIN shutdown supply current",
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        {
          "name": "VIN UVLO rising threshold",
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        {
          "name": "EN pin sourcing current post EN rising threshold",
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          "name": "Reference voltage",
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          "name": "FB input leakage current",
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          "conditions": "VFB = 1.2 V",
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        {
          "name": "Switching frequency, CCM operation",
          "symbol": "fSW1(CCM)",
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          "unit": "kHz",
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          "typ": 500,
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          "name": "Internal fixed soft-start time",
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          "typ": 4,
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          "name": "High-side peak current limit",
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        {
          "name": "Maximum switch duty cycle",
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        {
          "name": "Operating junction temperature",
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          "unit": "°C",
          "min": -40,
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          "name": "Input voltage VIN",
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          "name": "Output voltage SW, DC",
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        {
          "name": "Output voltage SW, transient",
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          "min": -3,
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          "conditions": "transient < 20 ns",
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        {
          "name": "Output voltage CB",
          "symbol": "CB",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 43.5,
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        {
          "name": "CB to SW voltage",
          "symbol": "CB to SW",
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          "min": -0.3,
          "typ": null,
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        {
          "name": "Junction temperature",
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          "min": -40,
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        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
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        {
          "name": "VIN UVLO hysteresis",
          "symbol": "VINUVLO(H)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.3,
          "max": null,
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        {
          "name": "High-side MOSFET on-resistance",
          "symbol": "RDSON(HS)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.12,
          "max": null,
          "conditions": "TJ = 25℃",
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        {
          "name": "Low-side MOSFET on-resistance",
          "symbol": "RDSON(LS)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.07,
          "max": null,
          "conditions": "TJ = 25℃",
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        },
        {
          "name": "Minimum ON pulse width",
          "symbol": "tON(min)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "VIN = 12 V, IOUT = 2 A",
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        {
          "name": "Maximum ON pulse width",
          "symbol": "tON(max)",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 6.76,
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          "conditions": "VIN = 12 V, IOUT = 2 A",
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        {
          "name": "Minimum OFF pulse width",
          "symbol": "tOFF(min)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VIN = 4.5 V",
          "source_page": 5,
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        {
          "name": "Zero-cross detection current threshold",
          "symbol": "IZC",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.02,
          "max": null,
          "conditions": "",
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        {
          "name": "Thermal shutdown threshold",
          "symbol": "TJ(SD)",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 163,
          "max": null,
          "conditions": "Temperature rising",
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        {
          "name": "Thermal shutdown hysteresis",
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          "kind": "thermal",
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          "name": "VIN quiescent current (non-switching), system",
          "symbol": "ISUPPLY",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A, RFBT = 1 MΩ, PFM variant",
          "source_page": 6,
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        {
          "name": "FB pin voltage to trip short-circuit hiccup mode",
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          "min": null,
          "typ": 0.24,
          "max": null,
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        {
          "name": "Switch voltage dead-time",
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          "kind": "timing",
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          "typ": 6.5,
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        {
          "name": "Thermal shutdown temperature",
          "symbol": "TSD",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
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          "conditions": "Shutdown temperature",
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          "name": "Thermal shutdown temperature",
          "symbol": "TSD",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 141,
          "max": null,
          "conditions": "Recovery temperature",
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        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 107.8,
          "max": null,
          "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",
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          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
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          "min": null,
          "typ": 52.4,
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          "name": "Junction-to-top characterization parameter",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 9.3,
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          "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",
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          "name": "Junction-to-board characterization parameter",
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