LM5156QDSSRQ1

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  "slug": "lm5156qdssrq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Pre-ordered Chips, WSON-12-EP(2x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "LM5156QDSSRQ1",
    "manufacturer": "Texas Instruments",
    "package": "WSON-12-EP(2x3)",
    "pin_count": 13,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm5156qdssrq1.pdf",
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    "distributor_links": {
      "lcsc": "C2876321",
      "digikey": "296-LM5156QDSSRQ1TR-ND",
      "mouser": "595-LM5156QDSSRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:39:46Z",
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        "pn": "296-LM5156QDSSRQ1TR-ND",
        "status": "found"
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    "pins": [
      {
        "number": "1",
        "name": "BIAS",
        "type": "power_in",
        "description": "Supply voltage input to the VCC regulator, with a bypass capacitor from this pin to GND; the datasheet states BIAS can be connected to VCC for 2.97 V to 16 V operation and supports up to 60 V (65 V absolute maximum) for load dump."
      },
      {
        "number": "2",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the internal VCC regulator and supply input of the MOSFET driver, requiring a ceramic bypass capacitor to GND; external VCC supply is supported to improve efficiency."
      },
      {
        "number": "3",
        "name": "GATE",
        "type": "output",
        "description": "N-channel MOSFET gate drive output, to be connected directly to the MOSFET gate through a short, low-inductance path (1.5 A standard driver, -1 V 50 ns transient to GND)."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, to be connected directly to the sense resistor ground through a low-inductance, wide and short path."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "input",
        "description": "Current sense input, connected to the positive side of the current sense resistor through a short path; CS to GND is limited to -0.3 V to 0.3 V DC (-1 V for 50 ns transient)."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Output of the internal transconductance error amplifier, with loop compensation components connected between this pin and GND; the pin has an internal max voltage clamp that can handle up to 1.6 mA."
      },
      {
        "number": "7",
        "name": "DITHOFF",
        "type": "input",
        "description": "Spread spectrum selection pin: internal spread spectrum is disabled when connected to VCC and enabled when connected to GND; absolute maximum rating is 18 V to GND."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the error amplifier, connected to a voltage divider from the output to set output voltage in boost/SEPIC topologies; absolute maximum rating is -0.3 V to 4.0 V to GND."
      },
      {
        "number": "9",
        "name": "SS",
        "type": "input",
        "description": "Soft-start time programming pin, with an external capacitor to GND that sets the error amplifier reference ramp rate together with an internal current source; not specified for an external applied voltage (-0.3 V to 3.8 V to GND)."
      },
      {
        "number": "10",
        "name": "RT",
        "type": "input",
        "description": "Switching frequency setting pin, programmed by a single resistor between RT and GND from 100 kHz to 2.2 MHz; not specified for an external applied voltage (-0.3 V to 3.8 V to GND)."
      },
      {
        "number": "11",
        "name": "PGOOD",
        "type": "output",
        "description": "Power-good indicator, an open-drain output that goes low if FB is below the undervoltage threshold and requires a pullup resistor to the system rail; absolute maximum rating is 18 V to GND and sink current is limited to 1 mA when VPGOOD exceeds VBIAS."
      },
      {
        "number": "12",
        "name": "UVLO/SYNC/EN",
        "type": "input",
        "description": "Undervoltage lockout programming pin set by a resistor divider from supply, which can also accept a negative pulse for external clock synchronization; it must not be left floating and should be connected to BIAS if unused (absolute maximum -0.3 V to VBIAS+0.3 V)."
      },
      {
        "number": "13",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
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        "guard_notes": [],
        "pages_sent": 8,
        "cost_usd": 0.0187,
        "at": "2026-10-28T16:39:36"
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        "pages": 50,
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        "source_tier": "mfr"
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      "pins": {
        "total": 13,
        "described": 13,
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        "refuses_to_fabricate": true
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