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LM3492QMHX
Public Made by Adomby adom
Texas Instruments LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+57@@ -0,0 +1,57 @@+# LM3492QMHX++**Texas Instruments** · LED Drivers · HTSSOP-20-EP++LM3492QMHX 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 | EN | input | Internally pulled up; connect to a voltage higher than 1.63 V to provide precision enable for the device (EN rising threshold 1.55 V to 1.71 V). |+| 2 | VIN | power_in | Supply pin for the device; input range is 4.5 V to 65 V. |+| 3 | SW | input | Switch node, internally connected to the drain of the integrated MOSFET; SW to GND is rated −0.3 V to 67 V (−2 V transient for under 100 ns). |+| 4 | SW | input | Switch node, internally connected to the drain of the integrated MOSFET; SW to GND is rated −0.3 V to 67 V (−2 V transient for under 100 ns). |+| 5 | VOUT | input | Output voltage sense for nearly constant switching frequency control; VIN, RT and VOUT to GND are rated −0.3 V to 67 V. |+| 6 | RT | input | An external resistor from the VOUT pin to this pin sets the switching frequency, programmable from 200 kHz to 1 MHz. |+| 7 | FB | input | Output voltage feedback through a resistor divider; the pin voltage is from 1.05 V to 2.5 V and FB to GND is rated −0.3 V to 5 V. |+| 8 | GND | power_in | Analog signal ground. |+| 9 | IOUT2 | input | Input of the channel 2 current regulator; the regulated current is programmable via the IREF pin (50 mA to 200 mA). |+| 10 | IOUT1 | input | Input of the channel 1 current regulator; the regulated current is programmable via the IREF pin (50 mA to 200 mA). |+| 11 | CDHC | input | External capacitor sets the dynamic headroom control sensitivity; a 120 µA internal source charges it at start-up to provide soft start. |+| 12 | IREF | input | An external resistor from this pin to ground programs the regulated current of channels 1 and 2; IREF pin voltage is 1.231 V to 1.281 V. |+| 13 | COMM | bidirectional | Open-drain bidirectional logic pin for power-good, overtemperature, IOUT overvoltage and undervoltage indications and command sending; VCOMM-LOW is at most 0.7 V at 5 mA. |+| 14 | LGND | power_in | Ground of the current regulator; must be connected to the GND pin for normal operation, as LGND and GND are not internally connected. |+| 15 | DIM1/CLK | bidirectional | Controls ON/OFF of the channel 1 current regulator; internally pulled low by 5 µA, and also serves as the clock for latching COMM input/output data. |+| 16 | DIM2 | input | Controls ON/OFF of the channel 2 current regulator; internally pulled low by 5 µA (DIM voltage HIGH 1.17 V, LOW 0.7 V). |+| 17 | PGND | power_in | Integrated MOSFET ground; must be connected to the GND pin for normal operation, and PGND and GND are not internally connected. |+| 18 | PGND | power_in | Integrated MOSFET ground; must be connected to the GND pin for normal operation, and PGND and GND are not internally connected. |+| 19 | VCC | power_out | LDO regulator output nominally regulated to 5.5 V; connect a capacitor larger than 0.47 µF between VCC and GND. |+| 20 | ILIM | input | Connect an external resistor from ILIM to VCC to reduce the peak current limit; connect ILIM to ground for the maximum current limit. |+| 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 | Nixie Tube Driver/LED Driver |+| Pins | 21 |++## CAD (KiCad official)++- Symbol: `LM3492QMHX`+- 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: `lm3492qmhx-etched.step` / `lm3492qmhx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3492qmhx.step` / `lm3492qmhx.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/lm3492) (34 pp, sha256 `7ea739bbe0afd383`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/lm3492qmhx-datasheet.pdf)
page.jsonadded+277@@ -0,0 +1,277 @@+{+ "slug": "lm3492qmhx",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "nixie tube driver-led driver",+ "lm3492qmhx",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm3492qmhx.kicad_sym",+ "lm3492qmhx.kicad_mod",+ "lm3492qmhx.glb",+ "lm3492qmhx.step",+ "lm3492qmhx.lbr",+ "docs/hero.png",+ "docs/lm3492qmhx-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm3492qmhx-hero.glb",+ "lm3492qmhx-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM3492QMHX",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-20-EP",+ "pin_count": 21,+ "category": "Nixie Tube Driver/LED Driver",+ "subcategory": "LED Drivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm3492",+ "parts": {+ "symbol": "lm3492qmhx.kicad_sym",+ "footprint": "lm3492qmhx.kicad_mod",+ "model_3d": "lm3492qmhx-hero.glb",+ "model_3d_plain": "lm3492qmhx.glb",+ "model_3d_step": "lm3492qmhx-etched.step",+ "model_3d_step_plain": "lm3492qmhx.step",+ "lbr": "lm3492qmhx.lbr"+ },+ "distributor_links": {+ "lcsc": "C701848"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T04:14:05Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": null,+ "status": "no match"+ },+ "mouser": {+ "pn": null,+ "status": "no match"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "EN",+ "type": "input",+ "description": "Internally pulled up; connect to a voltage higher than 1.63 V to provide precision enable for the device (EN rising threshold 1.55 V to 1.71 V)."+ },+ {+ "number": "2",+ "name": "VIN",+ "type": "power_in",+ "description": "Supply pin for the device; input range is 4.5 V to 65 V."+ },+ {+ "number": "3",+ "name": "SW",+ "type": "input",+ "description": "Switch node, internally connected to the drain of the integrated MOSFET; SW to GND is rated −0.3 V to 67 V (−2 V transient for under 100 ns)."+ },+ {+ "number": "4",+ "name": "SW",+ "type": "input",+ "description": "Switch node, internally connected to the drain of the integrated MOSFET; SW to GND is rated −0.3 V to 67 V (−2 V transient for under 100 ns)."+ },+ {+ "number": "5",+ "name": "VOUT",+ "type": "input",+ "description": "Output voltage sense for nearly constant switching frequency control; VIN, RT and VOUT to GND are rated −0.3 V to 67 V."+ },+ {+ "number": "6",+ "name": "RT",+ "type": "input",+ "description": "An external resistor from the VOUT pin to this pin sets the switching frequency, programmable from 200 kHz to 1 MHz."+ },+ {+ "number": "7",+ "name": "FB",+ "type": "input",+ "description": "Output voltage feedback through a resistor divider; the pin voltage is from 1.05 V to 2.5 V and FB to GND is rated −0.3 V to 5 V."+ },+ {+ "number": "8",+ "name": "GND",+ "type": "power_in",+ "description": "Analog signal ground."+ },+ {+ "number": "9",+ "name": "IOUT2",+ "type": "input",+ "description": "Input of the channel 2 current regulator; the regulated current is programmable via the IREF pin (50 mA to 200 mA)."+ },+ {+ "number": "10",+ "name": "IOUT1",+ "type": "input",+ "description": "Input of the channel 1 current regulator; the regulated current is programmable via the IREF pin (50 mA to 200 mA)."+ },+ {+ "number": "11",+ "name": "CDHC",+ "type": "input",+ "description": "External capacitor sets the dynamic headroom control sensitivity; a 120 µA internal source charges it at start-up to provide soft start."+ },+ {+ "number": "12",+ "name": "IREF",+ "type": "input",+ "description": "An external resistor from this pin to ground programs the regulated current of channels 1 and 2; IREF pin voltage is 1.231 V to 1.281 V."+ },+ {+ "number": "13",+ "name": "COMM",+ "type": "bidirectional",+ "description": "Open-drain bidirectional logic pin for power-good, overtemperature, IOUT overvoltage and undervoltage indications and command sending; VCOMM-LOW is at most 0.7 V at 5 mA."+ },+ {+ "number": "14",+ "name": "LGND",+ "type": "power_in",+ "description": "Ground of the current regulator; must be connected to the GND pin for normal operation, as LGND and GND are not internally connected."+ },+ {+ "number": "15",+ "name": "DIM1/CLK",+ "type": "bidirectional",+ "description": "Controls ON/OFF of the channel 1 current regulator; internally pulled low by 5 µA, and also serves as the clock for latching COMM input/output data."+ },+ {+ "number": "16",+ "name": "DIM2",+ "type": "input",+ "description": "Controls ON/OFF of the channel 2 current regulator; internally pulled low by 5 µA (DIM voltage HIGH 1.17 V, LOW 0.7 V)."+ },+ {+ "number": "17",+ "name": "PGND",+ "type": "power_in",+ "description": "Integrated MOSFET ground; must be connected to the GND pin for normal operation, and PGND and GND are not internally connected."+ },+ {+ "number": "18",+ "name": "PGND",+ "type": "power_in",+ "description": "Integrated MOSFET ground; must be connected to the GND pin for normal operation, and PGND and GND are not internally connected."+ },+ {+ "number": "19",+ "name": "VCC",+ "type": "power_out",+ "description": "LDO regulator output nominally regulated to 5.5 V; connect a capacitor larger than 0.47 µF between VCC and GND."+ },+ {+ "number": "20",+ "name": "ILIM",+ "type": "input",+ "description": "Connect an external resistor from ILIM to VCC to reduce the peak current limit; connect ILIM to ground for the maximum current limit."+ },+ {+ "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-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: In the source pin table, pin 4 and pin 18 have no printed name; SW (pin 4) and PGND (pin 18) are inf; The exposed pad is not a numbered lead; it is listed as DAP as printed in the datasheet. Its type wa; The datasheet types SW and VOUT as 'I' (input); the KiCad class was kept as input, although SW is ph",+ "exposed pad 21 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 11,+ "cost_usd": 0.0807,+ "at": "2026-10-08T04:13:41"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm3492",+ "pages": 34,+ "sha256": "7ea739bbe0afd383",+ "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"+ },+ "models_3d": [+ {+ "file": "lm3492qmhx.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.41,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "1d6ab2bb494d3dc2500176b0ae4922652e5358cb6c1f81aea6c10cc4991892d4",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm3492qmhx-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6.41,+ 6.5,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "70ab694dbb5cdb6cf17761233a562ac3d8d7e0f98e3bdfe152304817af64e309",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}