component
LM3102MH
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+58@@ -0,0 +1,58 @@+# LM3102MH++**Texas Instruments** · DC-DC Converters · HTSSOP-20-EP++LM3102MH 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 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |+| 2 | SW | power_out | Power switching node; absolute maximum is -0.3 V to 43.5 V to AGND, with a -2 V transient allowed for less than 100 ns. |+| 3 | SW | power_out | Power switching node; absolute maximum is -0.3 V to 43.5 V to AGND, with a -2 V transient allowed for less than 100 ns. |+| 4 | VIN | power_in | Power input supply voltage; recommended range is 4.5 V to 42 V, with a 43.5 V absolute maximum to AGND. |+| 5 | VIN | power_in | Power input supply voltage; recommended range is 4.5 V to 42 V, with a 43.5 V absolute maximum to AGND. |+| 6 | BST | power_in | Bootstrap capacitor connection; BST to SW must not exceed 7 V (absolute maximum). |+| 7 | AGND | power_in | Analog ground; the feedback divider bottom resistor (RFB2) should be grounded directly to this pin. |+| 8 | SS | passive | Analog soft-start pin; it sources about 8 µA (6 to 10 µA over temperature) at VSS = 0.5 V to set the start-up ramp. |+| 9 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |+| 10 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |+| 11 | GND | power_in | Ground pin listed in the pin table; the datasheet gives no further electrical limit for it. |+| 12 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |+| 13 | FB | input | Analog feedback input that sets the output voltage, with a precision internal 0.8 V reference of ±1.5%. |+| 14 | EN | input | Analog enable input; driving EN to 0 V puts the device in shutdown, where IIN-SD is typically 25 µA. |+| 15 | RON | input | Analog ON-time control that sets the switching frequency (programmable up to 1 MHz); the layout example connects RON to VIN, and its absolute maximum is 43.5 V to AGND. |+| 16 | VCC | power_out | Start-up regulator output that self-biases the internal gate drive and control circuits; the characteristics are specified with a 680 nF capacitor and the device thermal limits external loading. |+| 17 | PGND | power_in | Power ground for the main and synchronous MOSFETs; keep the CIN loop and the connection to CIN as short as possible. |+| 18 | PGND | power_in | Power ground for the main and synchronous MOSFETs; keep the CIN loop and the connection to CIN as short as possible. |+| 19 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |+| 20 | N/C | unconnected | No connection on the HTSSOP package; leave this pin unconnected. |+| 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: `LM3102MH`+- 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: `lm3102mh-etched.step` / `lm3102mh-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3102mh.step` / `lm3102mh.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/lm3102) (33 pp, sha256 `c1579fd4c432e09c`, retrieved 2026-10-07, 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-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/lm3102mh-datasheet.pdf)
page.jsonadded+277@@ -0,0 +1,277 @@+{+ "slug": "lm3102mh",+ "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",+ "lm3102mh",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm3102mh.kicad_sym",+ "lm3102mh.kicad_mod",+ "lm3102mh.glb",+ "lm3102mh.step",+ "lm3102mh.lbr",+ "docs/hero.png",+ "docs/lm3102mh-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm3102mh-hero.glb",+ "lm3102mh-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM3102MH",+ "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/lm3102",+ "parts": {+ "symbol": "lm3102mh.kicad_sym",+ "footprint": "lm3102mh.kicad_mod",+ "model_3d": "lm3102mh-hero.glb",+ "model_3d_plain": "lm3102mh.glb",+ "model_3d_step": "lm3102mh-etched.step",+ "model_3d_step_plain": "lm3102mh.step",+ "lbr": "lm3102mh.lbr"+ },+ "distributor_links": {+ "lcsc": "C1355323"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T21:56:42Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": null,+ "status": "no match"+ },+ "mouser": {+ "pn": null,+ "status": "no match"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "N/C",+ "type": "unconnected",+ "description": "No connection on the HTSSOP package; leave this pin unconnected."+ },+ {+ "number": "2",+ "name": "SW",+ "type": "power_out",+ "description": "Power switching node; absolute maximum is -0.3 V to 43.5 V to AGND, with a -2 V transient allowed for less than 100 ns."+ },+ {+ "number": "3",+ "name": "SW",+ "type": "power_out",+ "description": "Power switching node; absolute maximum is -0.3 V to 43.5 V to AGND, with a -2 V transient allowed for less than 100 ns."+ },+ {+ "number": "4",+ "name": "VIN",+ "type": "power_in",+ "description": "Power input supply voltage; recommended range is 4.5 V to 42 V, with a 43.5 V absolute maximum to AGND."+ },+ {+ "number": "5",+ "name": "VIN",+ "type": "power_in",+ "description": "Power input supply voltage; recommended range is 4.5 V to 42 V, with a 43.5 V absolute maximum to AGND."+ },+ {+ "number": "6",+ "name": "BST",+ "type": "power_in",+ "description": "Bootstrap capacitor connection; BST to SW must not exceed 7 V (absolute maximum)."+ },+ {+ "number": "7",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground; the feedback divider bottom resistor (RFB2) should be grounded directly to this pin."+ },+ {+ "number": "8",+ "name": "SS",+ "type": "passive",+ "description": "Analog soft-start pin; it sources about 8 µA (6 to 10 µA over temperature) at VSS = 0.5 V to set the start-up ramp."+ },+ {+ "number": "9",+ "name": "N/C",+ "type": "unconnected",+ "description": "No connection on the HTSSOP package; leave this pin unconnected."+ },+ {+ "number": "10",+ "name": "N/C",+ "type": "unconnected",+ "description": "No connection on the HTSSOP package; leave this pin unconnected."+ },+ {+ "number": "11",+ "name": "GND",+ "type": "power_in",+ "description": "Ground pin listed in the pin table; the datasheet gives no further electrical limit for it."+ },+ {+ "number": "12",+ "name": "N/C",+ "type": "unconnected",+ "description": "No connection on the HTSSOP package; leave this pin unconnected."+ },+ {+ "number": "13",+ "name": "FB",+ "type": "input",+ "description": "Analog feedback input that sets the output voltage, with a precision internal 0.8 V reference of ±1.5%."+ },+ {+ "number": "14",+ "name": "EN",+ "type": "input",+ "description": "Analog enable input; driving EN to 0 V puts the device in shutdown, where IIN-SD is typically 25 µA."+ },+ {+ "number": "15",+ "name": "RON",+ "type": "input",+ "description": "Analog ON-time control that sets the switching frequency (programmable up to 1 MHz); the layout example connects RON to VIN, and its absolute maximum is 43.5 V to AGND."+ },+ {+ "number": "16",+ "name": "VCC",+ "type": "power_out",+ "description": "Start-up regulator output that self-biases the internal gate drive and control circuits; the characteristics are specified with a 680 nF capacitor and the device thermal limits external loading."+ },+ {+ "number": "17",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground for the main and synchronous MOSFETs; keep the CIN loop and the connection to CIN as short as possible."+ },+ {+ "number": "18",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground for the main and synchronous MOSFETs; keep the CIN loop and the connection to CIN as short as possible."+ },+ {+ "number": "19",+ "name": "N/C",+ "type": "unconnected",+ "description": "No connection on the HTSSOP package; leave this pin unconnected."+ },+ {+ "number": "20",+ "name": "N/C",+ "type": "unconnected",+ "description": "No connection on the HTSSOP package; leave this pin unconnected."+ },+ {+ "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: Pin-to-function assignments were reconstructed from the extracted pin table, where the pin-number co; KiCad ERC types are inferred from the datasheet function descriptions (the datasheet only says Power; The datasheet lists GND on pin 11 with no description beyond 'Ground' and no separate voltage limit;",+ "exposed pad 21 added from the footprint",+ "dropped thermal pad ['EP'] absent from footprint"+ ],+ "pages_sent": 11,+ "cost_usd": 0.0762,+ "at": "2026-10-07T21:56:16"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm3102",+ "pages": 33,+ "sha256": "c1579fd4c432e09c",+ "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": "lm3102mh.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": "6f2373239e68981a60bf104c8fe5a8f8b5dcd11fc9aeabd44f7b410721c81ad1",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm3102mh-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": "2f5f4e73ebd6941b16c4f126cf8f7c22872f03cfd9a3e1a079a97b5eee75c941",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}