LM5176RHFT

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm5176rhft",
  "title": "LM5176RHFT",
  "brief": "Texas Instruments DC-DC Converters, QFN-28-EP(4x5). 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)",
    "lm5176rhft",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM5176RHFT",
    "manufacturer": "Texas Instruments",
    "package": "QFN-28-EP(4x5)",
    "pin_count": 29,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm5176.pdf",
    "parts": {
      "symbol": "lm5176rhft.kicad_sym",
      "footprint": "lm5176rhft.kicad_mod",
      "model_3d": "lm5176rhft-hero.glb",
      "model_3d_plain": "lm5176rhft-etched.glb",
      "model_3d_step": "lm5176rhft-etched.step",
      "model_3d_step_plain": "lm5176rhft.step",
      "lbr": "lm5176rhft.lbr"
    },
    "distributor_links": {
      "lcsc": "C2657940",
      "digikey": "296-LM5176RHFTTR-ND",
      "mouser": "595-LM5176RHFT"
    },
    "distributor_check": {
      "checked_at": "2026-11-06T00:50:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-LM5176RHFTTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-LM5176RHFT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MODE",
        "type": "input",
        "description": "Hiccup-mode select pin: 1.38 V < MODE < 2.22 V enables hiccup, and 2.6 V < MODE < VCC disables it, set by RMODE to AGND (93.1 kΩ or 200 kΩ)."
      },
      {
        "number": "2",
        "name": "DITH",
        "type": "input",
        "description": "Dither capacitor pin that modulates the oscillator frequency by 10% of the RT-set nominal frequency; grounding it disables dithering."
      },
      {
        "number": "3",
        "name": "RT/SYNC",
        "type": "input",
        "description": "Switching frequency programming pin set by a resistor to AGND, which can also accept an external sync clock; the operating frequency range is 100 kHz to 600 kHz."
      },
      {
        "number": "4",
        "name": "SLOPE",
        "type": "input",
        "description": "A capacitor from SLOPE to AGND provides the slope compensation ramp for stable current-mode operation in buck and boost modes."
      },
      {
        "number": "5",
        "name": "SS",
        "type": "input",
        "description": "Soft-start programming pin; a capacitor from SS to AGND sets the soft-start time."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output, with an external RC network to AGND for loop compensation; the COMP range is 0.3 V to 3 V."
      },
      {
        "number": "7",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground of the IC, to which the PowerPAD is soldered."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for output voltage regulation, connected through a resistor divider from VOUT; PGOOD trips outside -9%/+10% of the 0.8 V VREF."
      },
      {
        "number": "9",
        "name": "VOSNS",
        "type": "input",
        "description": "Output voltage sense input, connected to the power stage output rail; the VOUT range is 0.8 V to 55 V."
      },
      {
        "number": "10",
        "name": "ISNS(-)",
        "type": "input",
        "description": "Negative input of the current sense amplifier; the common mode range is 0 V to 55 V and a 50 mV sensed drop activates constant-current control."
      },
      {
        "number": "11",
        "name": "ISNS(+)",
        "type": "input",
        "description": "Positive input of the current sense amplifier; shorting ISNS(+) to ISNS(-) disables the average current limit."
      },
      {
        "number": "12",
        "name": "CSG",
        "type": "input",
        "description": "Negative (ground) input of the PWM current sense amplifier, connected directly to the low side of the current sense resistor; CS and CSG are limited to ±0.3 V."
      },
      {
        "number": "13",
        "name": "CS",
        "type": "input",
        "description": "Positive input of the PWM current sense amplifier, referenced to CSG with a ±0.3 V limit."
      },
      {
        "number": "14",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power-good output, pulled low when FB is outside the -9%/+10% window; it can be pulled up to 8 V."
      },
      {
        "number": "15",
        "name": "SW2",
        "type": "input",
        "description": "Boost-side switching node; the absolute maximum is 60 V (-1 V to 60 V)."
      },
      {
        "number": "16",
        "name": "HDRV2",
        "type": "output",
        "description": "High-side gate driver output for the boost-side MOSFET, sourcing 1.8 A and sinking 2.2 A peak."
      },
      {
        "number": "17",
        "name": "BOOT2",
        "type": "power_out",
        "description": "Bootstrap pin for the boost-side high-side driver; an external capacitor from BOOT2 to SW2 is required, typically 0.1 µF to 0.22 µF at 16 V or higher."
      },
      {
        "number": "18",
        "name": "LDRV2",
        "type": "output",
        "description": "Low-side gate driver output for the boost-side MOSFET, sourcing 1.8 A and sinking 2.2 A peak."
      },
      {
        "number": "19",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground of the IC and the high-current return for the low-side gate drivers."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the VCC bias regulator, which requires a capacitor to ground; VCC is limited to 8.5 V absolute maximum."
      },
      {
        "number": "21",
        "name": "BIAS",
        "type": "power_in",
        "description": "Optional bias input to the VCC regulator to reduce power loss at high VIN; the BIAS range is 8 V to 36 V when VCC is in regulation."
      },
      {
        "number": "22",
        "name": "LDRV1",
        "type": "output",
        "description": "Low-side gate driver output for the buck-side MOSFET, sourcing 1.8 A and sinking 2.2 A peak."
      },
      {
        "number": "23",
        "name": "BOOT1",
        "type": "power_out",
        "description": "Bootstrap pin for the buck-side high-side driver; an external capacitor from BOOT1 to SW1 is required, typically 0.1 µF to 0.22 µF at 16 V or higher."
      },
      {
        "number": "24",
        "name": "HDRV1",
        "type": "output",
        "description": "High-side gate driver output for the buck-side MOSFET, sourcing 1.8 A and sinking 2.2 A peak."
      },
      {
        "number": "25",
        "name": "SW1",
        "type": "input",
        "description": "Buck-side switching node; the absolute maximum is 60 V (-1 V to 60 V)."
      },
      {
        "number": "26",
        "name": "EN/UVLO",
        "type": "input",
        "description": "Enable pin: EN/UVLO below 0.4 V gives shutdown, and above 1.22 V enables switching once VCC exceeds its UV threshold; the range is 0 V to 55 V."
      },
      {
        "number": "27",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin, connected to a supply between 4.2 V and 55 V (60 V absolute maximum)."
      },
      {
        "number": "28",
        "name": "VISNS",
        "type": "input",
        "description": "Input voltage sense pin, connected to the power stage input rail; with external bias the range is 2.5 V to 55 V."
      },
      {
        "number": "29",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
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        "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 RHF (QFN-28) pinout comes from Table 5-1 and Figure 5-2. The PowerPAD is not numbered in the dat"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0285,
        "at": "2026-11-06T00:50:04"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm5176.pdf",
        "pages": 45,
        "sha256": "98191bec36d43771",
        "source_tier": "mfr"
      },
      "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"
    },
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        "zmin_mm": 0,
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        "checked": "2026-11-06",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "QFN-28-EP(4x5)",
      "Category": "Power Management (PMIC)",
      "Pins": "29"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "98191bec36d43771affa3e1540f6e1737347c19a1602747ffb4327509550a820",
      "rows": [
        {
          "name": "Input bias voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": 55,
          "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": 55,
          "conditions": "BIAS ≥ 5 V or VIN ≥ 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bias supply voltage (when VCC in regulation)",
          "symbol": "BIAS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 36,
          "conditions": "when VCC in regulation",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage range",
          "symbol": "VOSNS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 55,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Enable voltage range",
          "symbol": "EN/UVLO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 55,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average current sense common mode range",
          "symbol": "ISNS(+), ISNS(–)",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 55,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating frequency",
          "symbol": "fsw",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": 100,
          "typ": null,
          "max": 600,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input voltage absolute maximum",
          "symbol": "VIN, EN/UVLO, VISNS, VOSNS, ISNS(+), ISNS(–)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bias absolute maximum",
          "symbol": "BIAS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-voltage pin absolute maximum",
          "symbol": "FB, SS, DITH, RT/SYNC, SLOPE, COMP",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Switch node absolute maximum",
          "symbol": "SW1, SW2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Switch node absolute maximum transient",
          "symbol": "SW1, SW2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": 65,
          "conditions": "20 ns transient",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC, MODE, PGOOD absolute maximum",
          "symbol": "VCC, MODE, PGOOD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 8.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-side driver absolute maximum",
          "symbol": "LDRV1, LDRV2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 8.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-side driver absolute maximum, BOOT1 and HDRV1 with respect to SW1",
          "symbol": "BOOT1, HDRV1",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 8.5,
          "conditions": "with respect to SW1",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-side driver absolute maximum, BOOT2 and HDRV2 with respect to SW2",
          "symbol": "BOOT2, HDRV2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 8.5,
          "conditions": "with respect to SW2",
          "source_page": 5,
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        },
        {
          "name": "Bootstrap absolute maximum",
          "symbol": "BOOT1, BOOT2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 68,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current sense differential absolute maximum",
          "symbol": "ISNS(+) with respect to ISNS(-)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "PWM current sense absolute maximum",
          "symbol": "CS, CSG",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature absolute maximum",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "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": "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": "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, QFN-28)",
          "symbol": "VCS(BUCK)",
          "kind": "electrical",
          "unit": "mV",
          "min": 60,
          "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, QFN-28)",
          "symbol": "VCS(BOOST)",
          "kind": "electrical",
          "unit": "mV",
          "min": 96,
          "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,
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