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LM25118Q1MHX
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Texas Instruments AC-DC Controllers And Regulators, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+58@@ -0,0 +1,58 @@+# LM25118Q1MHX++**Texas Instruments** · AC-DC Controllers And Regulators · HTSSOP-20-EP++LM25118Q1MHX from Texas Instruments, in a HTSSOP-20-EP. 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 | VIN | power_in | Input supply voltage with recommended operating range of 3 V to 42 V. |+| 2 | UVLO | input | Undervoltage lockout input; regulator enters standby mode below 1.23 V and normal mode above 1.23 V with fixed 5 µA sourced current from pin. |+| 3 | RT | input | Oscillator frequency setting pin; connect resistor between this pin and AGND for recommended frequency range of 50 kHz to 500 kHz. |+| 4 | EN | input | Enable input; regulator enters low power mode drawing less than 10 µA when below 0.5 V and requires above 3 V for normal operation. |+| 5 | RAMP | input | Ramp capacitor connection; external capacitor between this pin and AGND sets the ramp slope for emulated current mode control. |+| 6 | AGND | power_in | Analog ground reference. |+| 7 | SS | input | Soft-start pin; external capacitor and internal 10 µA current source set the error amplifier reference rise time, held low when VCC <3.7 V or when UVLO/EN low or thermal shutdown active. |+| 8 | FB | input | Feedback signal input from regulated output connected to the inverting input of the internal error amplifier. |+| 9 | COMP | output | Error amplifier output; connect loop compensation network between this pin and FB pin. |+| 10 | VOUT | input | Output voltage monitor input for emulated current mode control; connect directly to regulated output. |+| 11 | SYNC | input | Synchronization clock input for switching regulator frequency synchronization to external clock. |+| 12 | CS | input | Current sense input; connect to the diode side of the current sense resistor. |+| 13 | CSG | power_in | Current sense ground reference; connect to ground side of the current sense resistor. |+| 14 | PGND | power_in | Power ground connection. |+| 15 | LO | output | Boost MOSFET gate drive output; connect to gate of external boost MOSFET. |+| 16 | VCC | power_out | Regulated bias supply output from internal regulator; locally decouple to PGND using low ESR/ESL capacitor placed as close to controller as possible. |+| 17 | VCCX | power_in | Optional external bias supply input; when voltage exceeds 3.9 V, internal VCC regulator is disabled and VCC connected to VCCX, otherwise connect to AGND if not used. |+| 18 | HB | power_in | High-side gate driver bootstrap supply; connect bootstrap capacitor between HB and HS with capacitor placed close to controller. |+| 19 | HO | output | High-side (buck) MOSFET gate drive output; connect to high-side MOSFET gate through short, low inductance path. |+| 20 | HS | input | High-side MOSFET source pin; connect to source terminal of high-side buck MOSFET and bootstrap capacitor. |+| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | HTSSOP-20-EP |+| Category | Power Management (PMIC) |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `LM25118Q1MHX`+- Footprint: `Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm`+- 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)+- 3D model files: `lm25118q1mhx-etched.step` / `lm25118q1mhx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm25118q1mhx.step` / `lm25118q1mhx.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/lm25118-q1) (41 pp, sha256 `39d708876b7ff442`, retrieved 2026-10-01, 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/lm25118q1mhx-datasheet.pdf)
page.jsonadded+231@@ -0,0 +1,231 @@+{+ "slug": "lm25118q1mhx",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments AC-DC Controllers And Regulators, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm25118q1mhx",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm25118q1mhx.kicad_sym",+ "lm25118q1mhx.kicad_mod",+ "lm25118q1mhx.glb",+ "lm25118q1mhx.step",+ "lm25118q1mhx.lbr",+ "docs/hero.png",+ "docs/lm25118q1mhx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM25118Q1MHX",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-20-EP",+ "pin_count": 21,+ "category": "Power Management (PMIC)",+ "subcategory": "AC-DC Controllers And Regulators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm25118-q1",+ "parts": {+ "symbol": "lm25118q1mhx.kicad_sym",+ "footprint": "lm25118q1mhx.kicad_mod",+ "model_3d": "lm25118q1mhx-etched.glb",+ "model_3d_plain": "lm25118q1mhx.glb",+ "model_3d_step": "lm25118q1mhx-etched.step",+ "model_3d_step_plain": "lm25118q1mhx.step",+ "lbr": "lm25118q1mhx.lbr"+ },+ "distributor_links": {+ "lcsc": "C529284"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T18:44:46Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": null,+ "status": "no match"+ },+ "mouser": {+ "pn": null,+ "status": "no match"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage with recommended operating range of 3 V to 42 V."+ },+ {+ "number": "2",+ "name": "UVLO",+ "type": "input",+ "description": "Undervoltage lockout input; regulator enters standby mode below 1.23 V and normal mode above 1.23 V with fixed 5 µA sourced current from pin."+ },+ {+ "number": "3",+ "name": "RT",+ "type": "input",+ "description": "Oscillator frequency setting pin; connect resistor between this pin and AGND for recommended frequency range of 50 kHz to 500 kHz."+ },+ {+ "number": "4",+ "name": "EN",+ "type": "input",+ "description": "Enable input; regulator enters low power mode drawing less than 10 µA when below 0.5 V and requires above 3 V for normal operation."+ },+ {+ "number": "5",+ "name": "RAMP",+ "type": "input",+ "description": "Ramp capacitor connection; external capacitor between this pin and AGND sets the ramp slope for emulated current mode control."+ },+ {+ "number": "6",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground reference."+ },+ {+ "number": "7",+ "name": "SS",+ "type": "input",+ "description": "Soft-start pin; external capacitor and internal 10 µA current source set the error amplifier reference rise time, held low when VCC <3.7 V or when UVLO/EN low or thermal shutdown active."+ },+ {+ "number": "8",+ "name": "FB",+ "type": "input",+ "description": "Feedback signal input from regulated output connected to the inverting input of the internal error amplifier."+ },+ {+ "number": "9",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output; connect loop compensation network between this pin and FB pin."+ },+ {+ "number": "10",+ "name": "VOUT",+ "type": "input",+ "description": "Output voltage monitor input for emulated current mode control; connect directly to regulated output."+ },+ {+ "number": "11",+ "name": "SYNC",+ "type": "input",+ "description": "Synchronization clock input for switching regulator frequency synchronization to external clock."+ },+ {+ "number": "12",+ "name": "CS",+ "type": "input",+ "description": "Current sense input; connect to the diode side of the current sense resistor."+ },+ {+ "number": "13",+ "name": "CSG",+ "type": "power_in",+ "description": "Current sense ground reference; connect to ground side of the current sense resistor."+ },+ {+ "number": "14",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground connection."+ },+ {+ "number": "15",+ "name": "LO",+ "type": "output",+ "description": "Boost MOSFET gate drive output; connect to gate of external boost MOSFET."+ },+ {+ "number": "16",+ "name": "VCC",+ "type": "power_out",+ "description": "Regulated bias supply output from internal regulator; locally decouple to PGND using low ESR/ESL capacitor placed as close to controller as possible."+ },+ {+ "number": "17",+ "name": "VCCX",+ "type": "power_in",+ "description": "Optional external bias supply input; when voltage exceeds 3.9 V, internal VCC regulator is disabled and VCC connected to VCCX, otherwise connect to AGND if not used."+ },+ {+ "number": "18",+ "name": "HB",+ "type": "power_in",+ "description": "High-side gate driver bootstrap supply; connect bootstrap capacitor between HB and HS with capacitor placed close to controller."+ },+ {+ "number": "19",+ "name": "HO",+ "type": "output",+ "description": "High-side (buck) MOSFET gate drive output; connect to high-side MOSFET gate through short, low inductance path."+ },+ {+ "number": "20",+ "name": "HS",+ "type": "input",+ "description": "High-side MOSFET source pin; connect to source terminal of high-side buck MOSFET and bootstrap capacitor."+ },+ {+ "number": "21",+ "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": [],+ "pages_sent": 9,+ "cost_usd": 0.1649,+ "at": "2026-10-01T18:44:25"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm25118-q1",+ "pages": 41,+ "sha256": "39d708876b7ff442",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 21,+ "described": 21,+ "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]"+ }+}