component
LM2574HVM-3.3
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-14-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "LM2574HVM-3.3",
"brief": "Texas Instruments DC-DC Converters, SOIC-14-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"manufacturer": "Texas Instruments",
"package": "SOIC-14-300mil",
"pin_count": 14,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.ti.com/cn/lit/gpn/lm2574",
"parts": {
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"distributor_links": {
"lcsc": "C2868482",
"digikey": "LM2574HVM-3.3-ND",
"mouser": "926-LM2574HVM-33"
},
"distributor_check": {
"checked_at": "2026-10-08T19:40:32Z",
"source": "Component Ocean /api/assign-pns",
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"pn": "LM2574HVM-3.3-ND",
"status": "found",
"lifecycle": "Obsolete"
},
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"pn": "926-LM2574HVM-33",
"status": "found",
"lifecycle": "Obsolete"
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},
"pins": [
{
"number": "1",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "2",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "3",
"name": "FB",
"type": "input",
"description": "Feedback sense input: connect to the midpoint of the feedback divider to set VOUT on the ADJ version, or connect directly to the output capacitor on a fixed-output version such as the 3.3 V part."
},
{
"number": "4",
"name": "SIG_GND",
"type": "power_in",
"description": "Signal ground reference for the internal references and logic; connect to system ground."
},
{
"number": "5",
"name": "ON/OFF",
"type": "input",
"description": "Enable input: high = OFF and low = ON, so connect to GND to enable the regulator; do not leave this pin floating. The datasheet specifies an ON/OFF input voltage of -0.3 V to VIN."
},
{
"number": "6",
"name": "PWR_GND",
"type": "power_in",
"description": "Power ground; connect to system ground and to the ground pins of CIN and COUT, keeping the path to CIN as short as possible."
},
{
"number": "7",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "8",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "9",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "10",
"name": "VIN",
"type": "power_in",
"description": "Supply input to the collector of the high-side transistor; connect to the supply and the input bypass capacitor CIN with a short path to PWR_GND. Recommended supply for the HV version is up to 60 V, with an absolute maximum of 63 V."
},
{
"number": "11",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "12",
"name": "OUTPUT",
"type": "output",
"description": "Emitter of the power transistor and the switching node; connect to the inductor and the cathode of the external catch diode. Steady-state voltage to ground is rated at -1 V minimum."
},
{
"number": "13",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "No internal connection, but must be soldered to the PCB for best heat transfer."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The SOIC-14 pin map on page 3 is garbled in text extraction. Pin numbers were taken from the 14-pin ; The datasheet classifies VIN as I (input). It is typed here as power_in because it is the supply inp; The datasheet's Electrical Characteristics and 3.3 V-specific specs are not in the pages provided, s"
],
"pages_sent": 12,
"cost_usd": 0.0843,
"at": "2026-10-08T19:39:46"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/lm2574",
"pages": 42,
"sha256": "61a9f44cec6689e8",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 14,
"described": 14,
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"refuses_to_fabricate": true
}
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"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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{
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},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-14-300mil",
"Category": "Power Management (PMIC)",
"Pins": "14"
}
},
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"discovery_pitch": "LM2574HVM-3.3 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
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