component
L5991D
Public Made by Adomby adom
STMicroelectronics AC-DC Controllers And Regulators, SO-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+52@@ -0,0 +1,52 @@+# L5991D++**STMicroelectronics** · AC-DC Controllers And Regulators · SO-16++L5991D from STMicroelectronics, in a SO-16. 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 | SYNC | bidirectional | Synchronization pulse input/output for master-slave PWM cycle control or oscillator frequency synchronization. |+| 2 | RCT | passive | Oscillator timing pin for external RC frequency-setting components (RA, RB, CT). |+| 3 | DC | input | Duty cycle control input voltage (1-3V nominal) setting maximum PWM duty cycle from 0% to Dx. |+| 4 | VREF | power_out | 5.0V ±1.5% reference voltage output capable of supplying external circuit biasing networks. |+| 5 | VFB | input | Error amplifier inverting input for feedback voltage comparison with internal 2.5V reference. |+| 6 | COMP | output | Error amplifier output for frequency compensation network connection and standby operation monitoring. |+| 7 | SS | passive | Soft-start capacitor connection node charged during power-up to approximately 7V for current-limiting control. |+| 8 | VCC | power_in | Controller signal supply voltage input (12-20V typical, ICC<50mA), with internal 25V Zener clamp. |+| 9 | VC | power_in | Power stage driver supply voltage input (12-20V typical) with high pulsed current capability for gate drive. |+| 10 | OUT | output | High-current totem-pole gate driver output for external power MOSFET with 1A peak drive capability and 13V internal clamp. |+| 11 | PGND | power_in | Power section ground return path for gate driver current loop closure. |+| 12 | SGND | power_in | Signal section ground reference for control and feedback circuits. |+| 13 | ISEN | input | Current sense input connected to primary switch sense resistor for pulse-by-pulse current limiting with 100ns leading-edge blanking. |+| 14 | DIS | input | Disable control input that shuts down IC when voltage exceeds 2.5V; must be tied to SGND if unused. |+| 15 | DC-LIM | input | Maximum duty cycle limit control; tie to VREF for 50% maximum duty cycle or leave floating for unrestricted maximum. |+| 16 | ST-BY | passive | Standby function control pin with external resistor RB for light-load oscillator frequency reduction. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SO-16 |+| Category | Power Management (PMIC) |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `L5991D`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SO-16 (KiCad packages3D, STEP)+- 3D model files: `l5991d-etched.step` / `l5991d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l5991d.step` / `l5991d.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/8590905763953131520) (23 pp, sha256 `cbc01f22c7c35f41`, retrieved 2026-10-05, 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/l5991d-datasheet.pdf)
page.jsonadded+206@@ -0,0 +1,206 @@+{+ "slug": "l5991d",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics AC-DC Controllers And Regulators, SO-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "l5991d",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "l5991d.kicad_sym",+ "l5991d.kicad_mod",+ "l5991d.glb",+ "l5991d.step",+ "l5991d.lbr",+ "docs/hero.png",+ "docs/l5991d-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "l5991d-hero.glb",+ "l5991d-hero.overlay.json"+ ],+ "component": {+ "mpn": "L5991D",+ "manufacturer": "STMicroelectronics",+ "package": "SO-16",+ "pin_count": 16,+ "category": "Power Management (PMIC)",+ "subcategory": "AC-DC Controllers And Regulators",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905763953131520",+ "parts": {+ "symbol": "l5991d.kicad_sym",+ "footprint": "l5991d.kicad_mod",+ "model_3d": "l5991d-hero.glb",+ "model_3d_plain": "l5991d.glb",+ "model_3d_step": "l5991d-etched.step",+ "model_3d_step_plain": "l5991d.step",+ "lbr": "l5991d.lbr"+ },+ "distributor_links": {+ "lcsc": 5267800,+ "digikey": "497-14768-5-ND",+ "mouser": "511-L5991D"+ },+ "distributor_check": {+ "checked_at": "2026-10-05T23:21:31Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-14768-5-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "511-L5991D",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "SYNC",+ "type": "bidirectional",+ "description": "Synchronization pulse input/output for master-slave PWM cycle control or oscillator frequency synchronization."+ },+ {+ "number": "2",+ "name": "RCT",+ "type": "passive",+ "description": "Oscillator timing pin for external RC frequency-setting components (RA, RB, CT)."+ },+ {+ "number": "3",+ "name": "DC",+ "type": "input",+ "description": "Duty cycle control input voltage (1-3V nominal) setting maximum PWM duty cycle from 0% to Dx."+ },+ {+ "number": "4",+ "name": "VREF",+ "type": "power_out",+ "description": "5.0V ±1.5% reference voltage output capable of supplying external circuit biasing networks."+ },+ {+ "number": "5",+ "name": "VFB",+ "type": "input",+ "description": "Error amplifier inverting input for feedback voltage comparison with internal 2.5V reference."+ },+ {+ "number": "6",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output for frequency compensation network connection and standby operation monitoring."+ },+ {+ "number": "7",+ "name": "SS",+ "type": "passive",+ "description": "Soft-start capacitor connection node charged during power-up to approximately 7V for current-limiting control."+ },+ {+ "number": "8",+ "name": "VCC",+ "type": "power_in",+ "description": "Controller signal supply voltage input (12-20V typical, ICC<50mA), with internal 25V Zener clamp."+ },+ {+ "number": "9",+ "name": "VC",+ "type": "power_in",+ "description": "Power stage driver supply voltage input (12-20V typical) with high pulsed current capability for gate drive."+ },+ {+ "number": "10",+ "name": "OUT",+ "type": "output",+ "description": "High-current totem-pole gate driver output for external power MOSFET with 1A peak drive capability and 13V internal clamp."+ },+ {+ "number": "11",+ "name": "PGND",+ "type": "power_in",+ "description": "Power section ground return path for gate driver current loop closure."+ },+ {+ "number": "12",+ "name": "SGND",+ "type": "power_in",+ "description": "Signal section ground reference for control and feedback circuits."+ },+ {+ "number": "13",+ "name": "ISEN",+ "type": "input",+ "description": "Current sense input connected to primary switch sense resistor for pulse-by-pulse current limiting with 100ns leading-edge blanking."+ },+ {+ "number": "14",+ "name": "DIS",+ "type": "input",+ "description": "Disable control input that shuts down IC when voltage exceeds 2.5V; must be tied to SGND if unused."+ },+ {+ "number": "15",+ "name": "DC-LIM",+ "type": "input",+ "description": "Maximum duty cycle limit control; tie to VREF for 50% maximum duty cycle or leave floating for unrestricted maximum."+ },+ {+ "number": "16",+ "name": "ST-BY",+ "type": "passive",+ "description": "Standby function control pin with external resistor RB for light-load oscillator frequency reduction."+ }+ ],+ "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": [],+ "pages_sent": 23,+ "cost_usd": 0.1812,+ "at": "2026-10-05T23:21:16"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905763953131520",+ "pages": 23,+ "sha256": "cbc01f22c7c35f41",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "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]"+ }+}