component
LM3151MHX-3.3
Public Made by Adomby adom
Texas Instruments DC-DC Controllers, HTSSOP-14-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "LM3151MHX-3.3",
"brief": "Texas Instruments DC-DC Controllers, HTSSOP-14-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"component": {
"mpn": "LM3151MHX-3.3",
"manufacturer": "Texas Instruments",
"package": "HTSSOP-14-EP",
"pin_count": 15,
"category": "Power Supply Chip",
"subcategory": "DC-DC Controllers",
"datasheet": "https://www.ti.com/cn/lit/gpn/lm3152",
"parts": {
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"lbr": "lm3151mhx-3-3.lbr"
},
"distributor_links": {
"lcsc": "C2658590"
},
"distributor_check": {
"checked_at": "2026-10-08T22:53:32Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
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},
"pins": [
{
"number": "1",
"name": "VCC",
"type": "power_out",
"description": "Internal regulated supply regulated to a nominal 5.95 V, requiring a 1 µF to 2.2 µF decoupling capacitor from this pin to ground."
},
{
"number": "2",
"name": "VIN",
"type": "power_in",
"description": "Device supply input with a rated input range of 6 V to 42 V, with the usable range for each ordering variant given in the ordering information."
},
{
"number": "3",
"name": "EN",
"type": "input",
"description": "Enable input: a logic high above 1.26 V (typical) or a floating pin enables the device, and grounding it disables the part."
},
{
"number": "4",
"name": "FB",
"type": "input",
"description": "Feedback input connected to the internal fixed-output resistor divider (3.3 V output) that senses output faults such as overvoltage and short circuit."
},
{
"number": "5",
"name": "SGND",
"type": "power_in",
"description": "Signal ground for all internal bias and reference circuits, to be connected to PGND at a single point."
},
{
"number": "6",
"name": "SS",
"type": "passive",
"description": "Soft-start pin, charged by an internal 7.7 µA source through an external capacitor to provide soft start."
},
{
"number": "7",
"name": "N/C",
"type": "unconnected",
"description": "No internal connection; this pin may be left unconnected or tied to ground."
},
{
"number": "8",
"name": "N/C",
"type": "unconnected",
"description": "No internal connection; this pin may be left unconnected or tied to ground."
},
{
"number": "9",
"name": "SGND",
"type": "power_in",
"description": "Signal ground for all internal bias and reference circuits, to be connected to PGND at a single point."
},
{
"number": "10",
"name": "SW",
"type": "passive",
"description": "Switch node that serves as the return rail for the controller and high-side gate driver, with the boost capacitor connected between this pin and BST; absolute maximum SW to GND is -3 V to 47 V."
},
{
"number": "11",
"name": "HG",
"type": "output",
"description": "High-side gate drive output to the high-side NMOS switch, powered by the differential voltage between BST and SW."
},
{
"number": "12",
"name": "BST",
"type": "power_out",
"description": "Bootstrap capacitor pin for the high-side gate driver rail, requiring a 0.33 µF to 0.47 µF capacitor between SW and BST, charged by an internal diode; must not be tied to an external supply rail."
},
{
"number": "13",
"name": "LG",
"type": "output",
"description": "Low-side gate drive output to the low-side NMOS switch, powered from VCC."
},
{
"number": "14",
"name": "PGND",
"type": "power_in",
"description": "Power ground that is the source connection of the synchronous rectifier MOSFET, to be connected to the power ground plane and to SGND at a single point."
},
{
"number": "15",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"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: Pin types are not given in the datasheet; they were assigned by me using KiCad ERC conventions. SS a; The datasheet is the 2009 National Semiconductor design, with a Chinese translation. The pin table (; Page 4 gives the VIN range as 6 V to 42 V, which is the LM3151 range. The ordering table on page 3 g",
"exposed pad 15 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 27,
"cost_usd": 0.1184,
"at": "2026-10-08T22:52:30"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/lm3152",
"pages": 27,
"sha256": "c7737d78325ad7c7",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 15,
"described": 15,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"seat": "z = 0",
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"footprint_binding": "identity",
"sha256": "e73930af88609deacee2bde98223bb9da2411f0cebb494015de765f0df216789",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "HTSSOP-14-EP",
"Category": "Power Supply Chip",
"Pins": "15"
}
},
"variants": [],
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"discovery_triggers": [
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"discovery_pitch": "LM3151MHX-3.3 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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