component
LM2576S-12
Public Made by Adomby adom
HGSEMI DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left)
5 files changed
+223−7
lm2576s-12.lbr+1−1@@ -84,7 +84,7 @@ <wire x1="5.6250" y1="-5.0000" x2="4.6250" y2="-5.0000" width="0.1000" layer="51"/> <text x="0" y="6.300" size="1.27" layer="25" align="bottom-center">>NAME</text> <text x="0" y="-6.300" size="1.27" layer="27" align="top-center">>VALUE</text>-</package>+<!--adom-pin1--><polygon width="0.0500" layer="21"><vertex x="-7.6500" y="4.2100"/><vertex x="-7.9900" y="4.6800"/><vertex x="-7.3100" y="4.6800"/></polygon></package> </packages> <symbols> <symbol name="LM2576S-12">
package.json+2−1@@ -24,6 +24,7 @@ "docs/hero.png", "docs/lm2576s-12-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ] }
pads.jsonadded+204@@ -0,0 +1,204 @@+{+ "schema": "adom.pads/1",+ "slug": "lm2576s-12",+ "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,+ "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": "Unregulated DC input supply. Operating range 15V-40V for LM2576 (up to 60V for LM2576HV). Bypass with a low-ESR 100µF electrolytic close to the pin.",+ "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": "Output",+ "type": "power_out",+ "description": "Switching output from the internal 3A NPN power switch. Connect to the catch Schottky diode (e.g. 1N5822) cathode and the LC output filter (typ. 100µH + 1000µF) that produces the regulated 12V rail.",+ "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": "Ground",+ "type": "power_in",+ "description": "Device power ground / signal return. Electrically common with the exposed TAB (tab is GND) - solder both to the ground plane for the thermal path.",+ "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": "Regulation feedback input to the internal error amplifier. For the fixed 12V version, tie directly to the +12V output node; the internal divider sets the 1.23V bandgap reference for regulation. Bias current ~50nA (500nA max).",+ "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": "Active-low TTL-compatible shutdown input. Logic LOW (VIL ≤ 1.0V) or grounded = regulator ON; logic HIGH (VIH ≥ 2.2V, up to VIN) = shutdown (~50µA standby current). Do not leave floating; tie to GND for always-on operation.",+ "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": "TAB",+ "name": "GND",+ "type": "passive",+ "description": "Exposed metal tab, internally connected to pin 3 (Ground). Provides the primary thermal path (RθJC(bot) ≈ 0.4°C/W); solder to a copper ground pour sized for the required θJA.",+ "is_pin1": false,+ "source": {+ "geometry": "TO-263-5_TabPin6.kicad_mod",+ "meaning": null,+ "correspondence": "derived: sole unmatched pin \"TAB\" to sole thermal pad \"6\""+ }+ }+ ]+}
page.json+15−4@@ -32,13 +32,13 @@ "number": "1", "name": "VIN", "type": "power_in",- "description": "Unregulated DC input supply. Operating range 15V-40V for LM2576 (up to 60V for LM2576HV). Bypass with a low-ESR 100\u00b5F electrolytic close to the pin."+ "description": "Unregulated DC input supply. Operating range 15V-40V for LM2576 (up to 60V for LM2576HV). Bypass with a low-ESR 100µF electrolytic close to the pin." }, { "number": "2", "name": "Output", "type": "power_out",- "description": "Switching output from the internal 3A NPN power switch. Connect to the catch Schottky diode (e.g. 1N5822) cathode and the LC output filter (typ. 100\u00b5H + 1000\u00b5F) that produces the regulated 12V rail."+ "description": "Switching output from the internal 3A NPN power switch. Connect to the catch Schottky diode (e.g. 1N5822) cathode and the LC output filter (typ. 100µH + 1000µF) that produces the regulated 12V rail." }, { "number": "3",@@ -56,13 +56,13 @@ "number": "5", "name": "ON/OFF", "type": "input",- "description": "Active-low TTL-compatible shutdown input. Logic LOW (VIL \u2264 1.0V) or grounded = regulator ON; logic HIGH (VIH \u2265 2.2V, up to VIN) = shutdown (~50\u00b5A standby current). Do not leave floating; tie to GND for always-on operation."+ "description": "Active-low TTL-compatible shutdown input. Logic LOW (VIL ≤ 1.0V) or grounded = regulator ON; logic HIGH (VIH ≥ 2.2V, up to VIN) = shutdown (~50µA standby current). Do not leave floating; tie to GND for always-on operation." }, { "number": "TAB", "name": "GND", "type": "passive",- "description": "Exposed metal tab, internally connected to pin 3 (Ground). Provides the primary thermal path (R\u03b8JC(bot) \u2248 0.4\u00b0C/W); solder to a copper ground pour sized for the required \u03b8JA."+ "description": "Exposed metal tab, internally connected to pin 3 (Ground). Provides the primary thermal path (RθJC(bot) ≈ 0.4°C/W); solder to a copper ground pour sized for the required θJA." } ], "provenance": {@@ -84,6 +84,17 @@ "viewers": { "symbol": "viewers/symbol.html", "footprint": "viewers/footprint.html"+ },+ "pin1": {+ "pad": "1",+ "at": [+ -7.65,+ -3.4+ ],+ "corner": "top-left",+ "source": "silk-marker",+ "derived_from": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc",+ "mark": "drawn" } }, "metadata": {
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='-10.600 -6.050 17.450 12.100' style='width:100%;height:100%'><line class='ly-silk' x1='-4.825' y1='-5.200' x2='-4.825' y2='-3.390' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-4.825' y1='5.200' x2='-4.825' y2='3.390' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-3.460' y1='-5.200' x2='-4.825' y2='-5.200' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-3.460' y1='5.200' x2='-4.825' y2='5.200' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-fab' x1='-9.325' y1='-3.040' x2='-9.325' y2='-2.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-9.325' y1='-2.040' x2='-4.625' y2='-2.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-9.325' y1='2.040' x2='-9.325' y2='3.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-9.325' y1='3.040' x2='-4.625' y2='3.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-4.625' y1='-3.040' x2='-9.325' y2='-3.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-4.625' y1='2.040' x2='-9.325' y2='2.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='4.625' y1='-5.000' x2='5.625' y2='-5.000' 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font-size='1.100' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'></text><rect class='ly-copper pad' data-num='' data-name='' x='1.650' y='-5.400' width='4.550' height='5.250' rx='1.137' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='3.925' y='-2.775' font-size='1.100' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'></text><rect class='ly-copper pad' data-num='' data-name='' x='1.650' y='0.150' width='4.550' height='5.250' rx='1.137' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='3.925' y='2.775' font-size='1.100' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'></text><rect class='ly-copper pad' data-num='1' data-name='VIN' x='-9.950' y='-3.090' width='4.600' height='1.100' rx='0.275' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-7.650' y='-2.540' font-size='0.660' 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='Output' x='-3.200' y='-5.400' width='9.400' height='10.800' rx='2.350' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='1.500' y='0.000' font-size='1.100' 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='Ground' x='-9.950' y='1.990' width='4.600' height='1.100' rx='0.275' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-7.650' y='2.540' font-size='0.660' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>3</text></svg></div>+<div class=stage id=stage><svg xmlns='http://www.w3.org/2000/svg' viewBox='-10.600 -6.050 17.450 12.100' style='width:100%;height:100%'><line class='ly-silk' x1='-4.825' y1='-5.200' x2='-4.825' y2='-3.390' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-4.825' y1='5.200' x2='-4.825' y2='3.390' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-3.460' y1='-5.200' x2='-4.825' y2='-5.200' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-silk' x1='-3.460' y1='5.200' x2='-4.825' y2='5.200' stroke='#d8b4fe' stroke-width='0.120'/><line class='ly-fab' x1='-9.325' y1='-3.040' x2='-9.325' y2='-2.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-9.325' y1='-2.040' x2='-4.625' y2='-2.040' stroke='#f472b6' stroke-width='0.100'/><line class='ly-fab' x1='-9.325' 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font-family='ui-monospace,monospace' font-weight='700'></text><rect class='ly-copper pad' data-num='' data-name='' x='1.650' y='0.150' width='4.550' height='5.250' rx='1.137' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='3.925' y='2.775' font-size='1.100' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'></text><rect class='ly-copper pad' data-num='1' data-name='VIN' x='-9.950' y='-3.090' width='4.600' height='1.100' rx='0.275' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-7.650' y='-2.540' font-size='0.660' 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='Output' x='-3.200' y='-5.400' width='9.400' height='10.800' rx='2.350' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='1.500' y='0.000' font-size='1.100' 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='Ground' x='-9.950' y='1.990' width='4.600' height='1.100' rx='0.275' fill='#f59e0b' stroke='#00000033' stroke-width='0.03' opacity='0.94'/><text class='padnum' x='-7.650' y='2.540' font-size='0.660' fill='#1c1206' text-anchor='middle' dominant-baseline='central' pointer-events='none' font-family='ui-monospace,monospace' font-weight='700'>3</text><polygon class='ly-silk adom-pin1' points='-7.650,-4.210 -7.990,-4.680 -7.310,-4.680' fill='#d8b4fe' stroke='none'><title>pin 1</title></polygon></svg></div> <div id=tip></div> <script> var KIND="footprint", MPN="RAY/LM2576S-12", PINS=[{"desc":"","name":"VIN","number":"1","type":""},{"desc":"","name":"Output","number":"2","type":""},{"desc":"","name":"Ground","number":"3","type":""},{"desc":"","name":"ON/OFF","number":"5","type":""},{"desc":"","name":"Feedback","number":"4","type":""}];