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Ray add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no… 9e5407d
{
 "schema": "adom.pads/1",
 "slug": "lm2576r-5-0",
 "footprint": "TO-263-5_TabPin6",
 "generated_from": {
  "footprint": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc",
  "pins": "page.json:component.pins",
  "overrides": null
 },
 "pin1": {
  "pad": "1",
  "at": [
   -7.65,
   -3.4
  ],
  "corner": "top-left",
  "source": "silk-marker",
  "derived_from": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc"
 },
 "pad_count": 6,
 "symbol_pins": [
  "1",
  "2",
  "3",
  "4",
  "5",
  "6"
 ],
 "paste_apertures": 4,
 "issues": [],
 "pads": [
  {
   "pad": "1",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    -3.4
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "1",
   "name": "VIN",
   "type": "power_in",
   "description": "Positive input supply for the LM2576 step-down switching regulator. Operating range 8V-40V for the 5.0V version; absolute maximum 45V. Requires an input bypass capacitor (Cin) to minimize voltage transients and supply switching currents.",
   "is_pin1": true,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "2",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    -1.7
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "2",
   "name": "VOUT",
   "type": "output",
   "description": "Emitter of the internal switching transistor. Delivers up to 3.0A switched output; typical switch saturation voltage VSAT ≈ 1.5V. PCB copper area on this node should be minimized to reduce coupling to sensitive circuitry.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "3",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    0.0
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "3",
   "name": "GND",
   "type": "power_in",
   "description": "Circuit ground pin. Return for the internal control circuitry and reference. Layout should provide a low-impedance return path (see application PCB layout guidance).",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "4",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    1.7
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "4",
   "name": "FEEDBACK",
   "type": "input",
   "description": "Senses the regulated output voltage to close the control loop. Internally divided (R2/R1) and applied to the internal error amplifier; nominal regulation to 5.0V ±4% on the fixed 5.0V version.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "5",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -7.65,
    3.4
   ],
   "rot": 0.0,
   "size": [
    4.6,
    1.1
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "5",
   "name": "ON/OFF",
   "type": "input",
   "description": "TTL-level shutdown input. Threshold typically 1.4V: voltage above this (up to +Vin) shuts the regulator off, dropping supply current to ~80µA; below 1.4V or left open, the regulator is on. Allowed range -0.3V ≤ V ≤ +Vin.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "6",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    1.5,
    0.0
   ],
   "rot": 0.0,
   "size": [
    9.4,
    10.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask"
   ],
   "thermal": false,
   "pin": "6",
   "name": "TAB",
   "type": "power_in",
   "description": "Exposed thermal pad. Present in the package land pattern; connect it per the manufacturer datasheet thermal recommendation. Added because the footprint carries this pad and the symbol had no pin for it.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-263-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  }
 ]
}