component
LM20242MHX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+57@@ -0,0 +1,57 @@+# LM20242MHX++**Texas Instruments** · DC-DC Converters · HTSSOP-20-EP++LM20242MHX 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 | SS/TRK | input | Soft-start or tracking control input charged by internal 5 µA source; defaults to 1 ms internal ramp if open or tracks external voltage source. |+| 2 | FB | input | Feedback input to error amplifier inverting input from regulated output; compared against internal 800 mV reference. |+| 3 | PGOOD | tri_state | Open drain power good output indicating output voltage is regulating within 93% to 97% of target with 20 µs deglitch delay. |+| 4 | COMP | output | Error amplifier output for pulse width modulator input; loop compensation network connected between COMP and AGND. |+| 5 | VIN | power_in | Input supply voltage pin with nominal operating range of 4.5V to 36V. |+| 6 | VIN | power_in | Input supply voltage pin with nominal operating range of 4.5V to 36V. |+| 7 | SW | output | Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor. |+| 8 | SW | output | Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor. |+| 9 | GND | power_in | Ground pin providing internal reference for power MOSFETs. |+| 10 | GND | power_in | Ground pin providing internal reference for power MOSFETs. |+| 11 | GND | power_in | Ground pin providing internal reference for power MOSFETs. |+| 12 | AGND | power_in | Analog ground providing internal reference for regulator control and feedback circuits. |+| 13 | SW | output | Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor. |+| 14 | SW | output | Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor. |+| 15 | VIN | power_in | Input supply voltage pin with nominal operating range of 4.5V to 36V. |+| 16 | VIN | power_in | Input supply voltage pin with nominal operating range of 4.5V to 36V. |+| 17 | BOOT | input | Bootstrap capacitor input charged by internal diode from VCC when SW transitions low to power high-side gate driver. |+| 18 | VCC | power_out | Regulated output set to 5.5V nominal for VIN above 7.2V and tracking VIN below 7.2V; requires 0.1 µF to 1 µF ceramic bypass capacitor. |+| 19 | EN | input | Enable or UVLO input with rising threshold 1.25V typical and 50 mV hysteresis; 2 µA pull-up enables device if pin left unconnected. |+| 20 | RT | input | Oscillator frequency adjust input; external resistor to AGND sets switching frequency from 100 kHz to 1 MHz per equation fSW = (82000/RRT − 56) kHz. |+| 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 Supply Chip |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `LM20242MHX`+- 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: `lm20242mhx-etched.step` / `lm20242mhx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm20242mhx.step` / `lm20242mhx.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/lm20242) (32 pp, sha256 `860788d839eb1f90`, retrieved 2026-10-01, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, 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/lm20242mhx-datasheet.pdf)
page.jsonadded+231@@ -0,0 +1,231 @@+{+ "slug": "lm20242mhx",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power supply chip",+ "lm20242mhx",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm20242mhx.kicad_sym",+ "lm20242mhx.kicad_mod",+ "lm20242mhx.glb",+ "lm20242mhx.step",+ "lm20242mhx.lbr",+ "docs/hero.png",+ "docs/lm20242mhx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM20242MHX",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-20-EP",+ "pin_count": 21,+ "category": "Power Supply Chip",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm20242",+ "parts": {+ "symbol": "lm20242mhx.kicad_sym",+ "footprint": "lm20242mhx.kicad_mod",+ "model_3d": "lm20242mhx-etched.glb",+ "model_3d_plain": "lm20242mhx.glb",+ "model_3d_step": "lm20242mhx-etched.step",+ "model_3d_step_plain": "lm20242mhx.step",+ "lbr": "lm20242mhx.lbr"+ },+ "distributor_links": {+ "lcsc": "C179681"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T17:24:34Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": null,+ "status": "no match"+ },+ "mouser": {+ "pn": null,+ "status": "no match"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "SS/TRK",+ "type": "input",+ "description": "Soft-start or tracking control input charged by internal 5 µA source; defaults to 1 ms internal ramp if open or tracks external voltage source."+ },+ {+ "number": "2",+ "name": "FB",+ "type": "input",+ "description": "Feedback input to error amplifier inverting input from regulated output; compared against internal 800 mV reference."+ },+ {+ "number": "3",+ "name": "PGOOD",+ "type": "tri_state",+ "description": "Open drain power good output indicating output voltage is regulating within 93% to 97% of target with 20 µs deglitch delay."+ },+ {+ "number": "4",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output for pulse width modulator input; loop compensation network connected between COMP and AGND."+ },+ {+ "number": "5",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."+ },+ {+ "number": "6",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."+ },+ {+ "number": "7",+ "name": "SW",+ "type": "output",+ "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."+ },+ {+ "number": "8",+ "name": "SW",+ "type": "output",+ "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin providing internal reference for power MOSFETs."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin providing internal reference for power MOSFETs."+ },+ {+ "number": "11",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin providing internal reference for power MOSFETs."+ },+ {+ "number": "12",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground providing internal reference for regulator control and feedback circuits."+ },+ {+ "number": "13",+ "name": "SW",+ "type": "output",+ "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."+ },+ {+ "number": "14",+ "name": "SW",+ "type": "output",+ "description": "Switch node connecting drain of synchronous rectifier NMOSFET and source of control NMOSFET to inductor."+ },+ {+ "number": "15",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."+ },+ {+ "number": "16",+ "name": "VIN",+ "type": "power_in",+ "description": "Input supply voltage pin with nominal operating range of 4.5V to 36V."+ },+ {+ "number": "17",+ "name": "BOOT",+ "type": "input",+ "description": "Bootstrap capacitor input charged by internal diode from VCC when SW transitions low to power high-side gate driver."+ },+ {+ "number": "18",+ "name": "VCC",+ "type": "power_out",+ "description": "Regulated output set to 5.5V nominal for VIN above 7.2V and tracking VIN below 7.2V; requires 0.1 µF to 1 µF ceramic bypass capacitor."+ },+ {+ "number": "19",+ "name": "EN",+ "type": "input",+ "description": "Enable or UVLO input with rising threshold 1.25V typical and 50 mV hysteresis; 2 µA pull-up enables device if pin left unconnected."+ },+ {+ "number": "20",+ "name": "RT",+ "type": "input",+ "description": "Oscillator frequency adjust input; external resistor to AGND sets switching frequency from 100 kHz to 1 MHz per equation fSW = (82000/RRT − 56) kHz."+ },+ {+ "number": "21",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "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": 32,+ "cost_usd": 0.2165,+ "at": "2026-10-01T17:24:11"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm20242",+ "pages": 32,+ "sha256": "860788d839eb1f90",+ "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]"+ }+}