component
LGS5145EP
Public Made by Adomby adom
Legend Si DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
add symbol pin "9" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no…
26b610b
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{
"schema": "adom.pads/1",
"slug": "lgs5145ep",
"footprint": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm",
"generated_from": {
"footprint": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
"pins": "page.json:component.pins",
"overrides": null
},
"pin1": {
"pad": "1",
"at": [
-2.475,
-1.905
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e"
},
"pad_count": 9,
"symbol_pins": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9"
],
"paste_apertures": 4,
"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": "BST",
"type": "passive",
"description": "Bootstrap supply pin for the high-side gate driver. A high-quality 100nF ceramic capacitor must be connected between BST and SW to bias the internal high-side MOSFET gate driver. Observe capacitor voltage rating (≥16V recommended).",
"is_pin1": true,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "VIN",
"type": "power_in",
"description": "Regulator power input, 4.5V-60V. Bypass with a 2.2µF (or larger) ceramic capacitor placed as close as possible between VIN and GND to minimize ringing and EMI.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "EN",
"type": "input",
"description": "Regulator enable input. Drive high (>1.4V) to enable the buck output; drive low (<1.0V) to shut down the regulator and enter low-power sleep. Has an internal ~100nA weak pull-down; do not leave floating in noisy environments - tie to VIN for auto-start.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "NC",
"type": "unconnected",
"description": "No connect. Leave floating.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "FB",
"type": "input",
"description": "Feedback input to the internal error amplifier. Connect to the tap of an external resistor divider from VOUT to GND; internal reference is 0.812V. VOUT = 0.812 × (RF + RG)/RG; keep RG ≤ 30kΩ. Absolute max FB voltage is -0.3V to 6V.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "NC",
"type": "unconnected",
"description": "No connect. Leave floating.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "GND",
"type": "power_in",
"description": "Ground return pin. Must be connected to the exposed pad and to the system ground plane through multiple vias for proper thermal and electrical performance.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.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": "SW",
"type": "output",
"description": "Internal power-switch node. Connect to the external power inductor, Schottky freewheeling diode (e.g. SS26), and the CBST bootstrap capacitor. Handles the switching waveform at 1.2MHz with peak currents up to 1.7A.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "9",
"kind": "smd",
"shape": "rect",
"at": [
0.0,
0.0
],
"rot": 0.0,
"size": [
2.41,
3.3
],
"layers": [],
"thermal": true,
"pin": "9",
"name": "GND (Exposed Pad)",
"type": "power_in",
"description": "Exposed thermal pad on the bottom of the ESOP-8 package. Must be soldered to the PCB ground plane (connected to GND, pin 7) for thermal dissipation and electrical grounding.",
"is_pin1": false,
"source": {
"geometry": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
}
]
}