UC3843BVD1R2G - Commit

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pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left)

Ray ·280d0951a5 ·2mo ago ·parent 6463403

5 files changed +290−3

package.json+2−1 pads.json+275 page.json+11 uc3843bvd1r2g.lbr+1−1 viewers/footprint.html+1−1

package.json+2−1

@@ -24,6 +24,7 @@     "docs/hero.png",     "docs/uc3843bvd1r2g-datasheet.pdf",     "viewers/symbol.html",-    "viewers/footprint.html"+    "viewers/footprint.html",+    "pads.json"   ] }\ No newline at end of file

pads.jsonadded+275

@@ -0,0 +1,275 @@+{+ "schema": "adom.pads/1",+ "slug": "uc3843bvd1r2g",+ "footprint": "SOIC-8_3.9x4.9mm_P1.27mm",+ "generated_from": {+  "footprint": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",+  "pins": "page.json:component.pins",+  "overrides": null+ },+ "pin1": {+  "pad": "1",+  "at": [+   -2.475,+   -1.905+  ],+  "corner": "top-left",+  "source": "silk-marker",+  "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4"+ },+ "pad_count": 8,+ "symbol_pins": [+  "1",+  "2",+  "3",+  "4",+  "5",+  "6",+  "7",+  "8"+ ],+ "paste_apertures": 0,+ "issues": [],+ "pads": [+  {+   "pad": "1",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    -2.475,+    -1.905+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "1",+   "name": "Compensation",+   "type": "output",+   "description": "Error Amplifier output, made available for external loop compensation. Voltage on this pin sets the peak inductor current (Ipk = (V_pin1 − 1.4 V) / (3·Rs)); internally clamped to ~1.0 V during overload.",+   "is_pin1": true,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "2",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    -2.475,+    -0.635+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "2",+   "name": "Voltage Feedback",+   "type": "input",+   "description": "Inverting input of the Error Amplifier. Normally connected to the switching supply output through a resistor divider; the non-inverting input is internally biased to 2.5 V. Input bias current is typically −0.1 µA (max −2.0 µA).",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "3",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    -2.475,+    0.635+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "3",+   "name": "Current Sense",+   "type": "input",+   "description": "Current-sense input; a voltage proportional to inductor current is applied here. The PWM uses this information to terminate output switch conduction on a cycle-by-cycle basis. Maximum input threshold typically 1.0 V; current sense gain Av ≈ 3.0 V/V.",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "4",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    -2.475,+    1.905+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "4",+   "name": "RT/CT",+   "type": "passive",+   "description": "Oscillator timing pin. The oscillator frequency and maximum duty cycle are programmed by connecting timing resistor RT from Vref to this pin and capacitor CT from this pin to ground. Operation to 500 kHz is possible; sawtooth swings between ~1.2 V (valley) and ~2.8 V (peak).",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "5",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    2.475,+    1.905+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "5",+   "name": "GND",+   "type": "power_in",+   "description": "Combined control-circuitry and power ground return for the 8-pin package. All internal grounds and the output stage return through this pin.",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "6",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    2.475,+    0.635+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "6",+   "name": "Output",+   "type": "output",+   "description": "High-current totem-pole gate-drive output for driving a power MOSFET. Peak source/sink currents up to 1.0 A; rise/fall times ~50 ns typical into 1 nF. Output is held low when UVLO is active.",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "7",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    2.475,+    -0.635+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "7",+   "name": "VCC",+   "type": "power_in",+   "description": "Positive supply of the control IC. UC3843B startup threshold 8.4 V typ (7.8-9.0 V), min operating voltage after turn-on 7.6 V typ. Absolute maximum 30 V; internal zener clamps at 36 V typ.",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  },+  {+   "pad": "8",+   "kind": "smd",+   "shape": "roundrect",+   "at": [+    2.475,+    -1.905+   ],+   "rot": 0.0,+   "size": [+    1.95,+    0.6+   ],+   "layers": [+    "F.Cu",+    "F.Mask",+    "F.Paste"+   ],+   "thermal": false,+   "pin": "8",+   "name": "Vref",+   "type": "power_out",+   "description": "5.0 V trimmed reference output (typ 5.0 V, ±1% at TJ = 25°C, IO = 1 mA). Provides charging current for CT through RT and can source up to ~50 mA to external loads; short-circuit current limited to ~85 mA.",+   "is_pin1": false,+   "source": {+    "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",+    "meaning": "page.json:component.pins",+    "correspondence": "kicad: symbol pin number == pad name"+   }+  }+ ]+}\ No newline at end of file

page.json+11

@@ -96,6 +96,17 @@     "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_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",+      "mark": "drawn"     }   },   "metadata": {

uc3843bvd1r2g.lbr+1−1

@@ -70,7 +70,7 @@   <wire x1="2.0600" y1="-2.5600" x2="-2.0600" y2="-2.5600" width="0.1200" layer="21"/>   <text x="0" y="3.480" size="1.27" layer="25" align="bottom-center">&gt;NAME</text>   <text x="0" y="-3.480" size="1.27" layer="27" align="top-center">&gt;VALUE</text>-</package>+<!--adom-pin1--><polygon width="0.0500" layer="21"><vertex x="-2.6000" y="2.4700"/><vertex x="-2.8400" y="2.8000"/><vertex x="-2.3600" y="2.8000"/></polygon></package> </packages> <symbols> <symbol name="UC3843BVD1R2G">

viewers/footprint.html+1−1

@@ -23,7 +23,7 @@ rect.pad.hi{stroke:var(--hi);stroke-width:.15;paint-order:stroke} #tip .td{font-size:11px;color:var(--ink);margin-top:5px;line-height:1.4} </style></head><body> <div class=bar><span class=h>PCB footprint</span><span class=sp></span><button class="lyrtog on" data-lyr="copper"><span class="d" style="background:#e35d5d"></span>Copper</button><button class="lyrtog on" data-lyr="silk"><span class="d" style="background:#e6edf3"></span>Silkscreen</button><button class="lyrtog" data-lyr="fab"><span class="d" style="background:#8b949e"></span>Fab</button><button class="lyrtog" data-lyr="courtyard"><span class="d" style="background:#bc8cff"></span>Courtyard</button></div>-<div class=stage id=stage><svg xmlns='http://www.w3.org/2000/svg' viewBox='-4.100 -3.100 8.200 6.200' style='width:100%;height:100%'><line class='ly-silk' x1='-2.060' y1='-2.560' x2='2.060' y2='-2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-2.060' y1='-2.465' x2='-2.060' y2='-2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-2.060' y1='2.560' x2='-2.060' y2='2.465' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='2.060' y1='-2.560' x2='2.060' y2='-2.465' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='2.060' y1='2.465' x2='2.060' y2='2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='2.060' y1='2.560' x2='-2.060' y2='2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-courtyard' x1='-3.700' y1='-2.460' x2='-2.200' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-3.700' y1='2.460' x2='-3.700' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='-2.700' x2='2.200' y2='-2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='-2.460' x2='-2.200' y2='-2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='2.460' x2='-3.700' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='2.700' x2='-2.200' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='-2.700' x2='2.200' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='-2.460' x2='3.700' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='2.460' x2='2.200' y2='2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='2.700' x2='-2.200' y2='2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='3.700' y1='-2.460' x2='3.700' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='3.700' y1='2.460' x2='2.200' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><rect class='ly-copper pad' data-num='1' data-name='Compensation' x='-3.450' y='-2.205' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.475' y='-1.905' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>1</text><rect class='ly-copper pad' data-num='2' data-name='Voltage Feedback' x='-3.450' y='-0.935' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.475' y='-0.635' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>2</text><rect class='ly-copper pad' data-num='3' data-name='Current Sense' x='-3.450' y='0.335' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.475' y='0.635' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>3</text><rect class='ly-copper pad' data-num='4' data-name='RT/CT' x='-3.450' y='1.605' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.475' y='1.905' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>4</text><rect class='ly-copper pad' data-num='5' data-name='GND' x='1.500' y='1.605' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.475' y='1.905' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>5</text><rect class='ly-copper pad' data-num='6' data-name='Output' x='1.500' y='0.335' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.475' y='0.635' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>6</text><rect class='ly-copper pad' data-num='7' data-name='VCC' x='1.500' y='-0.935' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.475' y='-0.635' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>7</text><rect class='ly-copper pad' data-num='8' data-name='Vref' x='1.500' y='-2.205' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='2.475' y='-1.905' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>8</text></svg></div>+<div class=stage id=stage><svg xmlns='http://www.w3.org/2000/svg' viewBox='-4.100 -3.100 8.200 6.200' style='width:100%;height:100%'><line class='ly-silk' x1='-2.060' y1='-2.560' x2='2.060' y2='-2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-2.060' y1='-2.465' x2='-2.060' y2='-2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-2.060' y1='2.560' x2='-2.060' y2='2.465' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='2.060' y1='-2.560' x2='2.060' y2='-2.465' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='2.060' y1='2.465' x2='2.060' y2='2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='2.060' y1='2.560' x2='-2.060' y2='2.560' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-courtyard' x1='-3.700' y1='-2.460' x2='-2.200' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-3.700' y1='2.460' x2='-3.700' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='-2.700' x2='2.200' y2='-2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='-2.460' x2='-2.200' y2='-2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='2.460' x2='-3.700' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='-2.200' y1='2.700' x2='-2.200' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='-2.700' x2='2.200' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='-2.460' x2='3.700' y2='-2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='2.460' x2='2.200' y2='2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='2.200' y1='2.700' x2='-2.200' y2='2.700' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='3.700' y1='-2.460' x2='3.700' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><line class='ly-courtyard' x1='3.700' y1='2.460' x2='2.200' y2='2.460' stroke='#4ade80' stroke-width='0.050'/><rect class='ly-copper pad' data-num='1' data-name='Compensation' x='-3.450' y='-2.205' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.475' y='-1.905' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>1</text><rect class='ly-copper pad' data-num='2' data-name='Voltage Feedback' x='-3.450' y='-0.935' width='1.950' height='0.600' rx='0.150' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-2.475' y='-0.635' font-size='0.360' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' 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