component
LM51581QRTERQ1
Public Made by Adomby adom
Texas Instruments DC-DC Converters, WQFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+54@@ -0,0 +1,54 @@+# LM51581QRTERQ1++**Texas Instruments** · DC-DC Converters · WQFN-16(3x3)++LM51581QRTERQ1 from Texas Instruments, in a WQFN-16(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | PGND | power_in | Power ground pin; source connection of the internal N-channel power MOSFET. |+| 2 | VCC | power_out | Output of the internal VCC regulator and supply voltage input of the internal MOSFET driver; connect 1-µF ceramic bypass capacitor from this pin to PGND. |+| 3 | BIAS | power_in | Supply voltage input to the VCC regulator; operating range 3.2V to 60V absolute maximum 65V; connect bypass capacitor from this pin to PGND. |+| 4 | PGOOD | tri_state | Power-good indicator; open-drain output which goes low if FB is below the undervoltage threshold (VUVTH); connect pullup resistor to system voltage rail. |+| 5 | RT | input | Switching frequency setting pin; switching frequency is programmed by a single resistor between RT and AGND in the range 100 kHz to 2.2 MHz. |+| 6 | EN/UVLO/SYNC | input | Enable/UVLO/synchronization pin; enables converter (>VEN threshold), programs undervoltage lockout via resistive voltage divider, and accepts external negative pulse for clock synchronization. |+| 7 | AGND | power_in | Analog ground pin; connect to the analog ground plane through a wide and short path. |+| 8 | COMP | output | Output of the internal transconductance error amplifier; connect loop compensation components between this pin and AGND. |+| 9 | FB | input | Inverting input of the error amplifier; connect voltage divider to set output voltage in boost, SEPIC, or primary-side regulated flyback topologies; input range 0V to 4.0V. |+| 10 | SS | input | Soft-start time programming pin; external capacitor and internal current source set the ramp rate of the internal error amplifier reference during soft start. |+| 11 | MODE | input | Mode configuration pin; setting controls hiccup mode protection and spread spectrum features via voltage level (0V, 370mV, 620mV, or >1V) or resistor to AGND. |+| 12 | NC | unconnected | No internal electrical contact. |+| 13 | SW | output | Switch pin; drain connection of the internal N-channel power MOSFET; 85V absolute maximum rating, 5-ns transient minimum -6V. |+| 14 | SW | output | Switch pin; drain connection of the internal N-channel power MOSFET; 85V absolute maximum rating, 5-ns transient minimum -6V. |+| 15 | NC | unconnected | No internal electrical contact. |+| 16 | PGND | power_in | Power ground pin; source connection of the internal N-channel power MOSFET. |+| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-16(3x3) |+| Category | Power Management (PMIC) |+| Pins | 17 |++## CAD (KiCad official)++- Symbol: `LM51581QRTERQ1`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`+- 3D model: WQFN-16(3x3) (KiCad packages3D, STEP)+- 3D model files: `lm51581qrterq1-etched.step` / `lm51581qrterq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm51581qrterq1.step` / `lm51581qrterq1.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm5158-q1) (45 pp, sha256 `c10929600ea42a9c`, retrieved 2026-10-03, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm51581qrterq1-datasheet.pdf)
page.jsonadded+215@@ -0,0 +1,215 @@+{+ "slug": "lm51581qrterq1",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments DC-DC Converters, WQFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm51581qrterq1",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm51581qrterq1.kicad_sym",+ "lm51581qrterq1.kicad_mod",+ "lm51581qrterq1.glb",+ "lm51581qrterq1.step",+ "lm51581qrterq1.lbr",+ "docs/hero.png",+ "docs/lm51581qrterq1-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm51581qrterq1-hero.glb",+ "lm51581qrterq1-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM51581QRTERQ1",+ "manufacturer": "Texas Instruments",+ "package": "WQFN-16(3x3)",+ "pin_count": 17,+ "category": "Power Management (PMIC)",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm5158-q1",+ "parts": {+ "symbol": "lm51581qrterq1.kicad_sym",+ "footprint": "lm51581qrterq1.kicad_mod",+ "model_3d": "lm51581qrterq1-hero.glb",+ "model_3d_plain": "lm51581qrterq1.glb",+ "model_3d_step": "lm51581qrterq1-etched.step",+ "model_3d_step_plain": "lm51581qrterq1.step",+ "lbr": "lm51581qrterq1.lbr"+ },+ "distributor_links": {+ "lcsc": 3188437,+ "digikey": "296-LM51581QRTERQ1TR-ND",+ "mouser": "595-LM51581QRTERQ1"+ },+ "distributor_check": {+ "checked_at": "2026-10-03T07:23:46Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-LM51581QRTERQ1TR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-LM51581QRTERQ1",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground pin; source connection of the internal N-channel power MOSFET."+ },+ {+ "number": "2",+ "name": "VCC",+ "type": "power_out",+ "description": "Output of the internal VCC regulator and supply voltage input of the internal MOSFET driver; connect 1-µF ceramic bypass capacitor from this pin to PGND."+ },+ {+ "number": "3",+ "name": "BIAS",+ "type": "power_in",+ "description": "Supply voltage input to the VCC regulator; operating range 3.2V to 60V absolute maximum 65V; connect bypass capacitor from this pin to PGND."+ },+ {+ "number": "4",+ "name": "PGOOD",+ "type": "tri_state",+ "description": "Power-good indicator; open-drain output which goes low if FB is below the undervoltage threshold (VUVTH); connect pullup resistor to system voltage rail."+ },+ {+ "number": "5",+ "name": "RT",+ "type": "input",+ "description": "Switching frequency setting pin; switching frequency is programmed by a single resistor between RT and AGND in the range 100 kHz to 2.2 MHz."+ },+ {+ "number": "6",+ "name": "EN/UVLO/SYNC",+ "type": "input",+ "description": "Enable/UVLO/synchronization pin; enables converter (>VEN threshold), programs undervoltage lockout via resistive voltage divider, and accepts external negative pulse for clock synchronization."+ },+ {+ "number": "7",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground pin; connect to the analog ground plane through a wide and short path."+ },+ {+ "number": "8",+ "name": "COMP",+ "type": "output",+ "description": "Output of the internal transconductance error amplifier; connect loop compensation components between this pin and AGND."+ },+ {+ "number": "9",+ "name": "FB",+ "type": "input",+ "description": "Inverting input of the error amplifier; connect voltage divider to set output voltage in boost, SEPIC, or primary-side regulated flyback topologies; input range 0V to 4.0V."+ },+ {+ "number": "10",+ "name": "SS",+ "type": "input",+ "description": "Soft-start time programming pin; external capacitor and internal current source set the ramp rate of the internal error amplifier reference during soft start."+ },+ {+ "number": "11",+ "name": "MODE",+ "type": "input",+ "description": "Mode configuration pin; setting controls hiccup mode protection and spread spectrum features via voltage level (0V, 370mV, 620mV, or >1V) or resistor to AGND."+ },+ {+ "number": "12",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal electrical contact."+ },+ {+ "number": "13",+ "name": "SW",+ "type": "output",+ "description": "Switch pin; drain connection of the internal N-channel power MOSFET; 85V absolute maximum rating, 5-ns transient minimum -6V."+ },+ {+ "number": "14",+ "name": "SW",+ "type": "output",+ "description": "Switch pin; drain connection of the internal N-channel power MOSFET; 85V absolute maximum rating, 5-ns transient minimum -6V."+ },+ {+ "number": "15",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal electrical contact."+ },+ {+ "number": "16",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground pin; source connection of the internal N-channel power MOSFET."+ },+ {+ "number": "17",+ "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-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "exposed pad 17 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 9,+ "cost_usd": 0.0952,+ "at": "2026-10-03T07:23:21"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm5158-q1",+ "pages": 45,+ "sha256": "c10929600ea42a9c",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 17,+ "described": 17,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}