RT2872GSP

{
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  "type": "component",
  "slug": "rt2872gsp",
  "title": "RT2872GSP",
  "brief": "Richtek Tech DC-DC Converters, SOP-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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  "component": {
    "mpn": "RT2872GSP",
    "manufacturer": "Richtek Tech",
    "package": "SOP-8-EP",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2203221830_Richtek-Tech-RT2872GSP_C2983596.pdf",
    "parts": {
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      "footprint": "rt2872gsp.kicad_mod",
      "model_3d": "rt2872gsp-etched.glb",
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      "model_3d_step": "rt2872gsp-etched.step",
      "model_3d_step_plain": "rt2872gsp.step",
      "lbr": "rt2872gsp.lbr"
    },
    "distributor_links": {
      "lcsc": "C2983596"
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "power_out",
        "description": "Switch node. Drain of the high-side and low-side internal N-MOSFETs. Connect to the external inductor and to the boot capacitor return."
      },
      {
        "number": "2",
        "name": "BOOT",
        "type": "power_in",
        "description": "Bootstrap supply for the high-side N-MOSFET gate driver. Connect a ceramic capacitor (typ. 0.1µF) from BOOT to SW to develop the floating gate-drive rail."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable. Drive high (>2.0V) to enable the converter, low (<0.4V) to disable. On the EVB, EN is pulled to VIN via a 100kΩ resistor (R4) for auto-enable operation."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Also tied to the exposed thermal pad on the underside of the SOP-8 package; solder the exposed pad to a ground copper plane for thermal dissipation."
      },
      {
        "number": "5",
        "name": "COMP",
        "type": "output",
        "description": "Error-amplifier output / loop compensation node. Connect an external RC network (typ. series R + C to GND) to set the loop bandwidth and phase margin of the current-mode control loop."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the internal error amplifier. Connect to the midpoint of the R1/R2 divider between VOUT and GND. Reference voltage is 0.8V; VOUT = 0.8V x (1 + R1/R2)."
      },
      {
        "number": "7",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency programming pin. Connect a resistor from RT to GND to set switching frequency between 300kHz and 1MHz (EVB uses 137kΩ / 113kΩ resistor on this pin)."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Main input supply, 4.5V to 36V. Bypass to GND with low-ESR ceramic capacitors (EVB uses 2x 10µF/50V X5R plus 0.1µF) placed close to the pin."
      },
      {
        "number": "9",
        "name": "EP (GND)",
        "type": "power_in",
        "description": "Exposed thermal pad on the bottom of the package. Electrically tied to GND (pin 4). Must be soldered to a GND copper pour for proper thermal performance."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2203221830_Richtek-Tech-RT2872GSP_C2983596.pdf",
        "pages": 11,
        "sha256": "c32ddb3a6bfb0393",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
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      {
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Richtek Tech",
      "Package": "SOP-8-EP",
      "Category": "PMIC",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c32ddb3a6bfb0393",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 36,
          "conditions": "EVB Specification table",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-Side Switch Current Limit Range",
          "symbol": "UOC",
          "kind": "electrical",
          "unit": "A",
          "min": 4.25,
          "typ": 5,
          "max": 5.75,
          "conditions": "EVB Specification table",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Up to 3A output current, per general description; EVB Specification table",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "RT2872GSP (Richtek Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "updated_at": "2026-09-25T05:13:44.017Z"
}