ADP1051ACPZ-R7

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  "slug": "adp1051acpz-r7",
  "title": "ADP1051ACPZ-R7",
  "brief": "Analog Devices Supervisor And Reset ICs, LFCSP-24(4x4). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
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  "component": {
    "mpn": "ADP1051ACPZ-R7",
    "manufacturer": "Analog Devices",
    "package": "LFCSP-24(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Supervisor And Reset ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589805136362446848",
    "parts": {
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    "pins": [
      {
        "number": "1",
        "name": "VS-",
        "type": "input",
        "description": "Inverting Voltage Sense Input. Connection for the ground line of the output power rail; must have a low-ohmic connection to AGND. External resistor divider tolerance <=0.5% is recommended to allow for trimming."
      },
      {
        "number": "2",
        "name": "VS+",
        "type": "input",
        "description": "Noninverting Voltage Sense Input, referred to VS-. External resistor divider tolerance <=0.5% is recommended to allow for trimming."
      },
      {
        "number": "3",
        "name": "CS2-",
        "type": "input",
        "description": "Inverting Differential Current Sense Input. Nominal 1.12 V. Use a 4.99 kOhm level-shift resistor for low-side sensing or 5.62 kOhm for high-side sensing in a 12 V application (0.1% tolerance). Tie to AGND if unused and configure Register 0xFE19[7]=1 for high-side sense mode."
      },
      {
        "number": "4",
        "name": "CS2+",
        "type": "input",
        "description": "Noninverting Differential Current Sense Input. Nominal 1.12 V. Same level-shifting and configuration rules as CS2-; tie to AGND if unused."
      },
      {
        "number": "5",
        "name": "VF",
        "type": "input",
        "description": "Voltage Feedforward / Primary-Side Input Voltage Sense / Input UVLO Protection. Connected upstream of the output inductor through a resistor divider; nominal voltage 1 V, referred to AGND."
      },
      {
        "number": "6",
        "name": "CS1",
        "type": "input",
        "description": "Primary Side Current Sense Input feeding the primary-side current-sensing ADC and cycle-by-cycle current-limit comparator. Resistors on this input must be <=0.5% tolerance for trimming. Tie to AGND if unused."
      },
      {
        "number": "7",
        "name": "SR1",
        "type": "output",
        "description": "PWM Logic Output Drive (synchronous rectifier). Referred to AGND; can be disabled when not in use."
      },
      {
        "number": "8",
        "name": "SR2",
        "type": "output",
        "description": "PWM Logic Output Drive (synchronous rectifier). Referred to AGND; can be disabled when not in use."
      },
      {
        "number": "9",
        "name": "OUTA",
        "type": "output",
        "description": "PWM Logic Output Drive. Referred to AGND; can be disabled when not in use."
      },
      {
        "number": "10",
        "name": "OUTB",
        "type": "output",
        "description": "PWM Logic Output Drive. Referred to AGND; can be disabled when not in use."
      },
      {
        "number": "11",
        "name": "OUTC",
        "type": "output",
        "description": "PWM Logic Output Drive. Referred to AGND; can be disabled when not in use. Can also be programmed as a synchronization signal output (SYNO)."
      },
      {
        "number": "12",
        "name": "OUTD",
        "type": "output",
        "description": "PWM Logic Output Drive. Referred to AGND; can be disabled when not in use. Can also be programmed as a synchronization signal output (SYNO)."
      },
      {
        "number": "13",
        "name": "SYNI/FLGI",
        "type": "input",
        "description": "Synchronization Signal Input (SYNI) or External Signal Input to generate a flag condition (FLGI). Tie to AGND if unused."
      },
      {
        "number": "14",
        "name": "SCL",
        "type": "bidirectional",
        "description": "I2C/PMBus Serial Clock Input and Output (open drain), referred to AGND. Requires an external pull-up resistor."
      },
      {
        "number": "15",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C/PMBus Serial Data Input and Output (open drain), referred to AGND. Requires an external pull-up resistor."
      },
      {
        "number": "16",
        "name": "CTRL",
        "type": "input",
        "description": "PMBus Control Signal input. Referred to AGND; a 1 nF decoupling capacitor to AGND is recommended for noise debounce."
      },
      {
        "number": "17",
        "name": "PG/ALT",
        "type": "output",
        "description": "Power Good Output / SMBus ALERT (open drain). Connect to VDD via a pull-up (typically 2.2 kOhm); referred to AGND."
      },
      {
        "number": "18",
        "name": "VCORE",
        "type": "power_out",
        "description": "Output of internal 2.6 V regulator. Decouple with at least 330 nF to AGND placed close to the device. Not intended to source current for external loads or to be used as a reference."
      },
      {
        "number": "19",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive Supply Input, 3.0 V to 3.6 V, referred to AGND. Decouple with a 2.2 uF capacitor to AGND placed close to the device."
      },
      {
        "number": "20",
        "name": "AGND",
        "type": "power_in",
        "description": "Common Analog Ground. Internal analog and digital circuitry grounds are star-connected to this pin through bonding wires."
      },
      {
        "number": "21",
        "name": "RES",
        "type": "passive",
        "description": "Resistor Input that sets the internal reference for the internal PLL frequency. Connect a 10 kOhm (+/-0.1%) resistor from RES to AGND."
      },
      {
        "number": "22",
        "name": "ADD",
        "type": "input",
        "description": "Address Select Input for the I2C/PMBus address. Connect an external resistor from ADD to AGND to program the device address."
      },
      {
        "number": "23",
        "name": "RTD",
        "type": "input",
        "description": "Thermistor Input. Place a thermistor (R25 = 100 kOhm 1%, beta = 4250 1%) in parallel with a 16.5 kOhm (1%) resistor and a 1 nF filter capacitor. Referred to AGND; tie to AGND if unused."
      },
      {
        "number": "24",
        "name": "OVP",
        "type": "input",
        "description": "Overvoltage Protection input used as redundant overvoltage protection. Referred to AGND."
      },
      {
        "number": "EP",
        "name": "EP",
        "type": "power_in",
        "description": "Exposed Thermal Pad on the underside of the package. For solder-joint reliability and maximum thermal capability, solder to the PCB AGND plane."
      }
    ],
    "provenance": {
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        "pages": 108,
        "sha256": "09eef5200e80f377",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "LFCSP-24(4x4)",
      "Category": "Power Management (PMIC)",
      "Pins": "25"
    }
  },
  "variants": [
    {
      "mpn": "ADP1051ACPZ-R7",
      "kind": "packaging"
    },
    {
      "mpn": "ADP1051ACPZ-RL",
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  "discovery_pitch": "ADP1051ACPZ-R7 (Analog Devices) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-24T15:55:27.658Z"
}