component
A7987TR
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+53@@ -0,0 +1,53 @@+# A7987TR++**STMicroelectronics** · DC-DC Converters · HTSSOP-16-EP++A7987TR from STMicroelectronics, in a HTSSOP-16-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 | VBIAS | power_in | Auxiliary input voltage supply for analog circuitry, typically connected to regulated output voltage or external rail higher than 3V. |+| 2 | VIN | power_in | DC input voltage supply. |+| 3 | VIN | power_in | DC input voltage supply. |+| 4 | VCC | power_in | Filtered DC input voltage for internal circuitry; bypass with 1µF ceramic capacitor to GND. |+| 5 | EN | input | Active high enable pin; connect to VCC if not used. |+| 6 | SS | input | Soft-start programming pin with internal 5µA current generator charging external capacitor. |+| 7 | SYNCH | input | Master/slave synchronization pin for multiple device clock synchronization. |+| 8 | COMP | output | Output of error amplifier; external compensation network connection point. |+| 9 | FB | input | Inverting input of error amplifier; output voltage feedback sensing node. |+| 10 | FSW | input | Switching frequency programming pin; pull-down resistor to GND selects frequency between 250kHz and 1.5MHz. |+| 11 | ILIM | input | Peak current limit programming pin; pull-down resistor to GND selects current limitation. |+| 12 | PGOOD | tri_state | Power good open collector output driven low when output voltage is out of regulation. |+| 13 | LX | output | Switching node connecting high-side and low-side power switches. |+| 14 | LX | output | Switching node connecting high-side and low-side power switches. |+| 15 | BOOT | output | Bootstrap supply pin for gate driver; connect 100nF external capacitor between BOOT and LX. |+| 16 | GND | power_in | Signal ground reference. |+| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | HTSSOP-16-EP |+| Category | Power Supply Chip |+| Pins | 17 |++## CAD (KiCad official)++- Symbol: `A7987TR`+- Footprint: `Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm`+- 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)+- 3D model files: `a7987tr-etched.step` / `a7987tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `a7987tr.step` / `a7987tr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930930030993408) (36 pp, sha256 `9a51ee02e0cbf118`, retrieved 2026-10-06, tier: lcsc)+- **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/a7987tr-datasheet.pdf)
page.jsonadded+215@@ -0,0 +1,215 @@+{+ "slug": "a7987tr",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power supply chip",+ "a7987tr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "a7987tr.kicad_sym",+ "a7987tr.kicad_mod",+ "a7987tr.glb",+ "a7987tr.step",+ "a7987tr.lbr",+ "docs/hero.png",+ "docs/a7987tr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "a7987tr-hero.glb",+ "a7987tr-hero.overlay.json"+ ],+ "component": {+ "mpn": "A7987TR",+ "manufacturer": "STMicroelectronics",+ "package": "HTSSOP-16-EP",+ "pin_count": 17,+ "category": "Power Supply Chip",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930930030993408",+ "parts": {+ "symbol": "a7987tr.kicad_sym",+ "footprint": "a7987tr.kicad_mod",+ "model_3d": "a7987tr-hero.glb",+ "model_3d_plain": "a7987tr.glb",+ "model_3d_step": "a7987tr-etched.step",+ "model_3d_step_plain": "a7987tr.step",+ "lbr": "a7987tr.lbr"+ },+ "distributor_links": {+ "lcsc": 2658021,+ "digikey": "497-19100-2-ND",+ "mouser": "511-A7987TR"+ },+ "distributor_check": {+ "checked_at": "2026-10-06T17:10:29Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-19100-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "511-A7987TR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VBIAS",+ "type": "power_in",+ "description": "Auxiliary input voltage supply for analog circuitry, typically connected to regulated output voltage or external rail higher than 3V."+ },+ {+ "number": "2",+ "name": "VIN",+ "type": "power_in",+ "description": "DC input voltage supply."+ },+ {+ "number": "3",+ "name": "VIN",+ "type": "power_in",+ "description": "DC input voltage supply."+ },+ {+ "number": "4",+ "name": "VCC",+ "type": "power_in",+ "description": "Filtered DC input voltage for internal circuitry; bypass with 1µF ceramic capacitor to GND."+ },+ {+ "number": "5",+ "name": "EN",+ "type": "input",+ "description": "Active high enable pin; connect to VCC if not used."+ },+ {+ "number": "6",+ "name": "SS",+ "type": "input",+ "description": "Soft-start programming pin with internal 5µA current generator charging external capacitor."+ },+ {+ "number": "7",+ "name": "SYNCH",+ "type": "input",+ "description": "Master/slave synchronization pin for multiple device clock synchronization."+ },+ {+ "number": "8",+ "name": "COMP",+ "type": "output",+ "description": "Output of error amplifier; external compensation network connection point."+ },+ {+ "number": "9",+ "name": "FB",+ "type": "input",+ "description": "Inverting input of error amplifier; output voltage feedback sensing node."+ },+ {+ "number": "10",+ "name": "FSW",+ "type": "input",+ "description": "Switching frequency programming pin; pull-down resistor to GND selects frequency between 250kHz and 1.5MHz."+ },+ {+ "number": "11",+ "name": "ILIM",+ "type": "input",+ "description": "Peak current limit programming pin; pull-down resistor to GND selects current limitation."+ },+ {+ "number": "12",+ "name": "PGOOD",+ "type": "tri_state",+ "description": "Power good open collector output driven low when output voltage is out of regulation."+ },+ {+ "number": "13",+ "name": "LX",+ "type": "output",+ "description": "Switching node connecting high-side and low-side power switches."+ },+ {+ "number": "14",+ "name": "LX",+ "type": "output",+ "description": "Switching node connecting high-side and low-side power switches."+ },+ {+ "number": "15",+ "name": "BOOT",+ "type": "output",+ "description": "Bootstrap supply pin for gate driver; connect 100nF external capacitor between BOOT and LX."+ },+ {+ "number": "16",+ "name": "GND",+ "type": "power_in",+ "description": "Signal ground reference."+ },+ {+ "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": 13,+ "cost_usd": 0.11,+ "at": "2026-10-06T17:10:14"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930930030993408",+ "pages": 36,+ "sha256": "9a51ee02e0cbf118",+ "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]"+ }+}