component
U3223E
Public Made by Adomby adom
UNI SEMIC DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "U3223E",
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"version": "0.1.0",
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"manufacturer": "UNI SEMIC",
"package": "ESOP-8",
"pin_count": 9,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
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"source": "Component Ocean /api/assign-pns",
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"status": "no match"
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"description": "Chip reference ground pin."
},
{
"number": "2",
"name": "EN",
"type": "input",
"description": "Driving this pin to logic high (1V) enables the IC, and driving it to logic low enables the IC into shutdown mode, per the datasheet's wording."
},
{
"number": "3",
"name": "FB",
"type": "input",
"description": "Feedback input pin; the datasheet gives an overload protection (OLP) detection threshold of 1.8 V typical on this pin."
},
{
"number": "4",
"name": "CS",
"type": "input",
"description": "Peak current sense pin; the sensed voltage is compared with a 0.2 V typical peak current threshold, with about 300 ns leading-edge blanking."
},
{
"number": "5",
"name": "NC",
"type": "unconnected",
"description": "No connection; the datasheet recommends leaving this pin floating."
},
{
"number": "6",
"name": "HV",
"type": "power_in",
"description": "Internal high-voltage pin for the 200 V high-voltage start-up circuit, which charges the VDD capacitor from the Drain."
},
{
"number": "7",
"name": "Drain",
"type": "power_in",
"description": "Internal high-voltage MOSFET drain; the Drain pin voltage absolute maximum range is -0.3 to 200 V."
},
{
"number": "8",
"name": "VDD",
"type": "power_in",
"description": "Chip supply pin where a 100 nF SMD capacitor is recommended; VDD absolute maximum is 25 V and the internal clamp is 30 V typical."
},
{
"number": "9",
"name": "Drain",
"type": "power_in",
"description": "Internal high-voltage MOSFET drain on the exposed pad, which must be well soldered to the PCB."
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The datasheet lists CS as type O (output), but the pin functions as a peak current sense input to th; The Chinese EN description is ambiguous ('drive to logic low enables the IC and enters shutdown mode; The datasheet classes HV, Drain and Drain EP as P (power) without voltage/current direction; they ar"
],
"pages_sent": 12,
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"at": "2026-10-19T00:52:24"
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"sha256": "67ebe1d5f2c775ee",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 9,
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"metadata": {
"specs": {
"Manufacturer": "UNI SEMIC",
"Package": "ESOP-8",
"Category": "Power Management (PMIC)",
"Pins": "9"
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"conditions": "HV=180V, VDD=0V",
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{
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"conditions": "HV=180V, VDD=12V",
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{
"name": "VDD startup current (IVDD_st)",
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"conditions": "无开关工作 (no switching operation)",
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{
"name": "Drain pin voltage (absolute maximum)",
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{
"name": "VDD supply voltage (absolute maximum)",
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{
"name": "VDD clamp current (absolute maximum)",
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{
"name": "Storage temperature (absolute maximum)",
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"kind": "absolute_maximum",
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"min": -65,
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{
"name": "Lead temperature, soldering 10 s (absolute maximum)",
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"source_page": 4,
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},
{
"name": "ESD capability, human body model",
"symbol": "",
"kind": "absolute_maximum",
"unit": "KV",
"min": null,
"typ": null,
"max": 3,
"conditions": "人体模型 (HBM)",
"source_page": 4,
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},
{
"name": "ESD capability, machine model",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 250,
"conditions": "机器模型 (MM)",
"source_page": 4,
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{
"name": "Maximum junction operating temperature (absolute maximum)",
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{
"name": "Operating ambient temperature (recommended)",
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"min": -40,
"typ": null,
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"source_page": 4,
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{
"name": "Switching frequency (recommended, maximum)",
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"min": null,
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"source_page": 4,
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{
"name": "Package thermal resistance, junction to ambient",
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"kind": "thermal",
"unit": "°C/W",
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"source_page": 4,
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"email": "[email protected]"
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