component
A7986ATR
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+44@@ -0,0 +1,44 @@+# A7986ATR++**STMicroelectronics** · DC-DC Converters · SOIC-8++A7986ATR from STMicroelectronics, in a SOIC-8. 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 | OUT | power_out | Regulator output; the output DC voltage is limited to -0.3 V to VCC per the absolute maximum ratings. |+| 2 | SYNCH | bidirectional | Master/slave synchronization pin: left floating it outputs a signal half a period out of phase with power turn-on, and when driven by an external signal above the internal frequency the device synchronizes to it with zero phase shift; its analog pin voltage is limited to -0.3 V to 4 V. |+| 3 | EN | input | Active-high enable: the device is ON above 1.2 V and OFF below 0.3 V, with the pin rated -0.3 V to VCC. |+| 4 | COMP | output | Error amplifier output used for loop frequency compensation; its analog pin voltage is limited to -0.3 V to 4 V. |+| 5 | FB | input | Feedback input: connecting VOUT directly regulates the output at 0.6 V (VFB 0.588 V to 0.612 V), and higher voltages require an external resistor divider from VOUT; the feedback voltage is rated -0.3 V to 1.5 V. |+| 6 | FSW | passive | Switching frequency set pin: an external resistor to ground raises the frequency above the 250 kHz free-running value (up to 1 MHz with RFSW = 33 kΩ), and leaving it floating gives 250 kHz; the analog pin voltage is limited to -0.3 V to 4 V. |+| 7 | GND | power_in | Ground reference for the device. |+| 8 | VCC | power_in | Unregulated DC input voltage with an operating range of 4.5 V to 38 V and an absolute maximum of 45 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOIC-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `A7986ATR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)+- 3D model files: `a7986atr-etched.step` / `a7986atr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `a7986atr.step` / `a7986atr.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/8603165528047296512) (42 pp, sha256 `a76d19b8a435a683`, 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/a7986atr-datasheet.pdf)
page.jsonadded+200@@ -0,0 +1,200 @@+{+ "slug": "a7986atr",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "a7986atr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "a7986atr.kicad_sym",+ "a7986atr.kicad_mod",+ "a7986atr.glb",+ "a7986atr.step",+ "a7986atr.lbr",+ "docs/hero.png",+ "docs/a7986atr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "a7986atr-hero.glb",+ "a7986atr-hero.overlay.json"+ ],+ "component": {+ "mpn": "A7986ATR",+ "manufacturer": "STMicroelectronics",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "Power Management (PMIC)",+ "subcategory": "DC-DC Converters",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603165528047296512",+ "parts": {+ "symbol": "a7986atr.kicad_sym",+ "footprint": "a7986atr.kicad_mod",+ "model_3d": "a7986atr-hero.glb",+ "model_3d_plain": "a7986atr.glb",+ "model_3d_step": "a7986atr-etched.step",+ "model_3d_step_plain": "a7986atr.step",+ "lbr": "a7986atr.lbr"+ },+ "distributor_links": {+ "lcsc": "C2970022",+ "digikey": "497-13218-2-ND",+ "mouser": "511-A7986ATR"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T19:45:08Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-13218-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "511-A7986ATR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "OUT",+ "type": "power_out",+ "description": "Regulator output; the output DC voltage is limited to -0.3 V to VCC per the absolute maximum ratings."+ },+ {+ "number": "2",+ "name": "SYNCH",+ "type": "bidirectional",+ "description": "Master/slave synchronization pin: left floating it outputs a signal half a period out of phase with power turn-on, and when driven by an external signal above the internal frequency the device synchronizes to it with zero phase shift; its analog pin voltage is limited to -0.3 V to 4 V."+ },+ {+ "number": "3",+ "name": "EN",+ "type": "input",+ "description": "Active-high enable: the device is ON above 1.2 V and OFF below 0.3 V, with the pin rated -0.3 V to VCC."+ },+ {+ "number": "4",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output used for loop frequency compensation; its analog pin voltage is limited to -0.3 V to 4 V."+ },+ {+ "number": "5",+ "name": "FB",+ "type": "input",+ "description": "Feedback input: connecting VOUT directly regulates the output at 0.6 V (VFB 0.588 V to 0.612 V), and higher voltages require an external resistor divider from VOUT; the feedback voltage is rated -0.3 V to 1.5 V."+ },+ {+ "number": "6",+ "name": "FSW",+ "type": "passive",+ "description": "Switching frequency set pin: an external resistor to ground raises the frequency above the 250 kHz free-running value (up to 1 MHz with RFSW = 33 kΩ), and leaving it floating gives 250 kHz; the analog pin voltage is limited to -0.3 V to 4 V."+ },+ {+ "number": "7",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference for the device."+ },+ {+ "number": "8",+ "name": "VCC",+ "type": "power_in",+ "description": "Unregulated DC input voltage with an operating range of 4.5 V to 38 V and an absolute maximum of 45 V."+ }+ ],+ "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: Package hint was SOIC-8, but the datasheet only defines the package as HSOP8 (8-lead, with exposed p; The HSOP8 exposed pad is mentioned in the text but is not listed as a numbered pin in Table 1, so it; Pin connection figure (Figure 2, top view) was not included in the extracted text; pin positions are"+ ],+ "pages_sent": 10,+ "cost_usd": 0.0433,+ "at": "2026-10-08T19:44:43"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603165528047296512",+ "pages": 42,+ "sha256": "a76d19b8a435a683",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "a7986atr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 4.9,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "a7986atr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 4.9,+ 1.75+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "d1ca869844832d214461eb446dd7150c5f82cf88d585c905dbcf2f5cb2a569a7",+ "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]"+ }+}