component
UC3842ADTR
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+51@@ -0,0 +1,51 @@+# UC3842ADTR++**Texas Instruments** · AC-DC Controllers And Regulators · SOIC-14++UC3842ADTR from Texas Instruments, in a SOIC-14. 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 | COMP | output | Low-impedance 1MHz error amplifier output and peak current limit/PWM comparator input with 80dB open-loop gain; maximum sink current 6mA. |+| 2 | NC | unconnected | No connection. |+| 3 | FB | input | Error amplifier input for power converter voltage feedback loop stability control. |+| 4 | NC | unconnected | No connection. |+| 5 | ISENSE | input | Peak current limit/PWM comparator input; peak current sense signal clamped to 1V; controls cycle-by-cycle peak current limit with external current sense resistor. |+| 6 | NC | unconnected | No connection. |+| 7 | RT/CT | input | Internal oscillator input; programmed with external resistor RT (5kΩ-100kΩ) and capacitor CT (470pF-4.7nF). |+| 8 | PGND | power_in | Power ground and gate driver return path; enables star grounding technique to reduce gate driver-induced PWM instability. |+| 9 | GND | power_in | Controller signal ground. |+| 10 | OUTPUT | output | 1A totem-pole gate driver output; sink/source capability up to 1A; external gate resistor required to limit gate drive current. |+| 11 | VC | power_in | Gate driver bias voltage input; requires bypass capacitor at least 10 times gate capacitance of main switch FET. |+| 12 | VCC | power_in | Gate driver power supply input; requires bypass capacitor with capacitance at least 10 times larger than main switch FET gate capacitance. |+| 13 | NC | unconnected | No connection. |+| 14 | VREF | power_in | 5V reference voltage output; maximum output current 10mA; short-circuit protected at ~100mA; requires 1µF high-frequency bypass capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-14 |+| Category | Power Management (PMIC) |+| Pins | 14 |++## CAD (KiCad official)++- Symbol: `UC3842ADTR`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (KiCad packages3D, STEP)+- 3D model files: `uc3842adtr-etched.step` / `uc3842adtr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uc3842adtr.step` / `uc3842adtr.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/uc3842a) (54 pp, sha256 `1f5ad8805f414728`, retrieved 2026-10-06, 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-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/uc3842adtr-datasheet.pdf)
page.jsonadded+194@@ -0,0 +1,194 @@+{+ "slug": "uc3842adtr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "uc3842adtr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "uc3842adtr.kicad_sym",+ "uc3842adtr.kicad_mod",+ "uc3842adtr.glb",+ "uc3842adtr.step",+ "uc3842adtr.lbr",+ "docs/hero.png",+ "docs/uc3842adtr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "uc3842adtr-hero.glb",+ "uc3842adtr-hero.overlay.json"+ ],+ "component": {+ "mpn": "UC3842ADTR",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-14",+ "pin_count": 14,+ "category": "Power Management (PMIC)",+ "subcategory": "AC-DC Controllers And Regulators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/uc3842a",+ "parts": {+ "symbol": "uc3842adtr.kicad_sym",+ "footprint": "uc3842adtr.kicad_mod",+ "model_3d": "uc3842adtr-hero.glb",+ "model_3d_plain": "uc3842adtr.glb",+ "model_3d_step": "uc3842adtr-etched.step",+ "model_3d_step_plain": "uc3842adtr.step",+ "lbr": "uc3842adtr.lbr"+ },+ "distributor_links": {+ "lcsc": 86757,+ "digikey": "296-UC3842ADTR-ND",+ "mouser": "595-UC3842ADTR"+ },+ "distributor_check": {+ "checked_at": "2026-10-06T17:04:06Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-UC3842ADTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-UC3842ADTR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "COMP",+ "type": "output",+ "description": "Low-impedance 1MHz error amplifier output and peak current limit/PWM comparator input with 80dB open-loop gain; maximum sink current 6mA."+ },+ {+ "number": "2",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection."+ },+ {+ "number": "3",+ "name": "FB",+ "type": "input",+ "description": "Error amplifier input for power converter voltage feedback loop stability control."+ },+ {+ "number": "4",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection."+ },+ {+ "number": "5",+ "name": "ISENSE",+ "type": "input",+ "description": "Peak current limit/PWM comparator input; peak current sense signal clamped to 1V; controls cycle-by-cycle peak current limit with external current sense resistor."+ },+ {+ "number": "6",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection."+ },+ {+ "number": "7",+ "name": "RT/CT",+ "type": "input",+ "description": "Internal oscillator input; programmed with external resistor RT (5kΩ-100kΩ) and capacitor CT (470pF-4.7nF)."+ },+ {+ "number": "8",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground and gate driver return path; enables star grounding technique to reduce gate driver-induced PWM instability."+ },+ {+ "number": "9",+ "name": "GND",+ "type": "power_in",+ "description": "Controller signal ground."+ },+ {+ "number": "10",+ "name": "OUTPUT",+ "type": "output",+ "description": "1A totem-pole gate driver output; sink/source capability up to 1A; external gate resistor required to limit gate drive current."+ },+ {+ "number": "11",+ "name": "VC",+ "type": "power_in",+ "description": "Gate driver bias voltage input; requires bypass capacitor at least 10 times gate capacitance of main switch FET."+ },+ {+ "number": "12",+ "name": "VCC",+ "type": "power_in",+ "description": "Gate driver power supply input; requires bypass capacitor with capacitance at least 10 times larger than main switch FET gate capacitance."+ },+ {+ "number": "13",+ "name": "NC",+ "type": "unconnected",+ "description": "No connection."+ },+ {+ "number": "14",+ "name": "VREF",+ "type": "power_in",+ "description": "5V reference voltage output; maximum output current 10mA; short-circuit protected at ~100mA; requires 1µF high-frequency bypass capacitor."+ }+ ],+ "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": 27,+ "cost_usd": 0.2679,+ "at": "2026-10-06T17:03:50"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/uc3842a",+ "pages": 54,+ "sha256": "1f5ad8805f414728",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "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]"+ }+}