LM5141QRGERQ1

{
  "slug": "lm5141qrgerq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, VQFN-24-EP(4x4). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm5141qrgerq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "lm5141qrgerq1.step",
    "lm5141qrgerq1.lbr",
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    "docs/lm5141qrgerq1-datasheet.pdf",
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    "viewers/footprint.html"
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  "component": {
    "mpn": "LM5141QRGERQ1",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm5141-q1",
    "parts": {
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      "footprint": "lm5141qrgerq1.kicad_mod",
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      "model_3d_step": "lm5141qrgerq1-etched.step",
      "model_3d_step_plain": "lm5141qrgerq1.step",
      "lbr": "lm5141qrgerq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2658684"
    },
    "pins": [
      {
        "number": "1",
        "name": "DEMB",
        "type": "input",
        "description": "Diode emulation or external synchronization clock input (350 kHz to 550 kHz at 440 kHz, 1.8 MHz to 2.6 MHz at 2.2 MHz); connect to AGND for diode emulation or VDDA for forced PWM mode."
      },
      {
        "number": "2",
        "name": "VDDA",
        "type": "power_out",
        "description": "Internal analog bias regulator output (4.75 V to 5.25 V typical 5 V); bypass with 100 nF or greater ceramic capacitor to AGND."
      },
      {
        "number": "3",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground connection for internal voltage reference and analog circuits; connect to PGND at single point under IC."
      },
      {
        "number": "4",
        "name": "RT",
        "type": "input",
        "description": "Resistor to ground shifts oscillator frequency (1.8 to 2.53 MHz for 2.2 MHz mode, 300 to 500 kHz for 440 kHz mode); analog voltage 0 to 0.6 V modulates frequency."
      },
      {
        "number": "5",
        "name": "DITH",
        "type": "output",
        "description": "Dither output for frequency spread spectrum; capacitor to AGND modulates frequency ±5% with 20 µA source/sink current; connect to VDDA to disable."
      },
      {
        "number": "6",
        "name": "OSC",
        "type": "input",
        "description": "Oscillator frequency selection input; connect to VDDA for 2.2 MHz operation or AGND for 440 kHz operation (state latched during VCC power-up)."
      },
      {
        "number": "7",
        "name": "LOL",
        "type": "output",
        "description": "Low-side gate driver turnoff output with peak sink current 4.25 A; rise/fall time 4 ns with 2700 pF load."
      },
      {
        "number": "8",
        "name": "LO",
        "type": "output",
        "description": "Low-side gate driver turnon output with peak source current 3.25 A; rise/fall time 4 ns with 2700 pF load."
      },
      {
        "number": "9",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection pin for low-side gate driver; connect to power ground plane."
      },
      {
        "number": "10",
        "name": "VCC",
        "type": "power_out",
        "description": "VCC bias supply (4.75 V to 5.25 V) with 75 mA to 125 mA sourcing current limit; bypass with 2.2 µF to 4.7 µF capacitor to PGND."
      },
      {
        "number": "11",
        "name": "HB",
        "type": "power_out",
        "description": "High-side bootstrap supply (5 V to 5.25 V nominal); charged through external diode when SW low with 3 µA quiescent current and 2.5 V UVLO threshold."
      },
      {
        "number": "12",
        "name": "SW",
        "type": "input",
        "description": "Switching node connecting bootstrap capacitor, high-side MOSFET source, and low-side MOSFET drain; monitored by IC for adaptive dead-time control with -5 mV zero-crossing threshold."
      },
      {
        "number": "13",
        "name": "HO",
        "type": "output",
        "description": "High-side gate driver turnon output with peak source current 3.25 A (at VHO = 0 V, SW = 0 V, HB = 5 V)."
      },
      {
        "number": "14",
        "name": "HOL",
        "type": "output",
        "description": "High-side gate driver turnoff output with peak sink current 4.25 A; rise/fall time 4 ns with 2700 pF load."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Main supply voltage input (3.8 V to 65 V steady-state, 70 V absolute maximum); source for internal VCC regulator and charge pump."
      },
      {
        "number": "16",
        "name": "VCCX",
        "type": "power_in",
        "description": "Optional external bias supply input; if VCCX > 4.5 V, internal VCC regulator is disabled (maximum 6.5 V); ground if unused."
      },
      {
        "number": "17",
        "name": "VOUT",
        "type": "input",
        "description": "Current sense amplifier inverting input connected to output side of current-sense resistor (1.5 V to 15 V) with gain 12 V/V."
      },
      {
        "number": "18",
        "name": "CS",
        "type": "input",
        "description": "Current sense amplifier non-inverting input with 75 mV current-limit threshold; use Kelvin connection to inductor side of sense resistor."
      },
      {
        "number": "19",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin with 1.2 V regulation threshold; connect to VDDA for 3.3 V output, AGND for 5 V output, or external divider for 1.5 V to 15 V adjustable output."
      },
      {
        "number": "20",
        "name": "COMP",
        "type": "input",
        "description": "Compensation pin for transconductance error amplifier output (1200 µS gain) enabling external type II control loop compensation network."
      },
      {
        "number": "21",
        "name": "PG",
        "type": "output",
        "description": "Open-collector power-good output; pulls low when VOUT outside 92% to 110% window with 25 µs overvoltage and 30 µs undervoltage filter delays."
      },
      {
        "number": "22",
        "name": "SS",
        "type": "input",
        "description": "Soft-start programming pin; external capacitor and internal 20 µA current source set voltage ramp rate; pulling below 80 mV disables gate driver outputs."
      },
      {
        "number": "23",
        "name": "EN",
        "type": "input",
        "description": "Active-high logic enable input (up to 70 V); enabled when EN > 2 V, shutdown when EN < 0.8 V with 10 µA typical shutdown current."
      },
      {
        "number": "24",
        "name": "RES",
        "type": "output",
        "description": "Restart timer output; external capacitor and 20 µA current source configure hiccup mode; charges to 1.2 V threshold to restart after 512 consecutive current-limit cycles."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
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      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 48,
        "cost_usd": 0.5071,
        "at": "2026-09-23T06:51:55"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm5141-q1",
        "pages": 48,
        "sha256": "2899e0c97e37baaf",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "checked": "2026-10-07",
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}