component
UCC2809PWTR-1
Public Made by Adomby adom
Texas Instruments AC-DC Controllers & Regulators, TSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+44@@ -0,0 +1,44 @@+# UCC2809PWTR-1++**Texas Instruments** · AC-DC Controllers & Regulators · TSSOP-8++UCC2809PWTR-1 from Texas Instruments, in a TSSOP-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 | FB | input | Summing node for current sense feedback, optocoupler voltage feedback and slope compensation, compared against a 1V threshold; an internal 250 on-resistance NMOS discharges external leading-edge-blanking capacitance during PWM off time. |+| 2 | SS | passive | Soft-start timing capacitor node, charged by an internal 6µA current source; if taken below 0.5V the output driver is inhibited and held low. |+| 3 | RT1 | passive | Connects timing resistor RT1 and sets the oscillator positive ramp time, Tr = 0.74 × (CT + 27pF) × RT1; minimum recommended value is 10kΩ. |+| 4 | RT2 | passive | Connects timing resistor RT2 and sets the oscillator negative ramp time, Tf = 0.74 × (CT + 27pF) × RT2; minimum recommended value is 4.32kΩ. |+| 5 | GND | power_in | Reference ground and power ground for all functions of the device. |+| 6 | OUT | output | High-current power driver output for an N-channel MOSFET, with a minimum series gate resistor of 3.9 recommended and an absolute IOUT limit of -0.4A to 0.8A (tpw < 1µs, duty cycle < 10%). |+| 7 | VDD | power_in | Power input, shunt-regulated at 17.5V (absolute maximum VDD 19V), to be bypassed with a 1µF ceramic capacitor. |+| 8 | REF | power_out | Buffered internal 5V reference output (5.0V typical, 4.75V to 5.25V), to be bypassed with at least a 0.47µF ceramic capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-8 |+| Category | Power Supply Chip |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `UCC2809PWTR-1`+- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`+- 3D model: TSSOP-8 (KiCad packages3D, STEP)+- 3D model files: `ucc2809pwtr-1-etched.step` / `ucc2809pwtr-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc2809pwtr-1.step` / `ucc2809pwtr-1.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/ucc2809-2) (24 pp, sha256 `7fc852aa75a77966`, 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/ucc2809pwtr-1-datasheet.pdf)
page.jsonadded+200@@ -0,0 +1,200 @@+{+ "slug": "ucc2809pwtr-1",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments AC-DC Controllers & Regulators, TSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power supply chip",+ "ucc2809pwtr-1",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "ucc2809pwtr-1.kicad_sym",+ "ucc2809pwtr-1.kicad_mod",+ "ucc2809pwtr-1.glb",+ "ucc2809pwtr-1.step",+ "ucc2809pwtr-1.lbr",+ "docs/hero.png",+ "docs/ucc2809pwtr-1-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "ucc2809pwtr-1-hero.glb",+ "ucc2809pwtr-1-hero.overlay.json"+ ],+ "component": {+ "mpn": "UCC2809PWTR-1",+ "manufacturer": "Texas Instruments",+ "package": "TSSOP-8",+ "pin_count": 8,+ "category": "Power Supply Chip",+ "subcategory": "AC-DC Controllers & Regulators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/ucc2809-2",+ "parts": {+ "symbol": "ucc2809pwtr-1.kicad_sym",+ "footprint": "ucc2809pwtr-1.kicad_mod",+ "model_3d": "ucc2809pwtr-1-hero.glb",+ "model_3d_plain": "ucc2809pwtr-1.glb",+ "model_3d_step": "ucc2809pwtr-1-etched.step",+ "model_3d_step_plain": "ucc2809pwtr-1.step",+ "lbr": "ucc2809pwtr-1.lbr"+ },+ "distributor_links": {+ "lcsc": "C702421",+ "digikey": "296-34869-2-ND",+ "mouser": "595-UCC2809PWTR-1"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T04:16:47Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-34869-2-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-UCC2809PWTR-1",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "FB",+ "type": "input",+ "description": "Summing node for current sense feedback, optocoupler voltage feedback and slope compensation, compared against a 1V threshold; an internal 250 on-resistance NMOS discharges external leading-edge-blanking capacitance during PWM off time."+ },+ {+ "number": "2",+ "name": "SS",+ "type": "passive",+ "description": "Soft-start timing capacitor node, charged by an internal 6µA current source; if taken below 0.5V the output driver is inhibited and held low."+ },+ {+ "number": "3",+ "name": "RT1",+ "type": "passive",+ "description": "Connects timing resistor RT1 and sets the oscillator positive ramp time, Tr = 0.74 × (CT + 27pF) × RT1; minimum recommended value is 10kΩ."+ },+ {+ "number": "4",+ "name": "RT2",+ "type": "passive",+ "description": "Connects timing resistor RT2 and sets the oscillator negative ramp time, Tf = 0.74 × (CT + 27pF) × RT2; minimum recommended value is 4.32kΩ."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Reference ground and power ground for all functions of the device."+ },+ {+ "number": "6",+ "name": "OUT",+ "type": "output",+ "description": "High-current power driver output for an N-channel MOSFET, with a minimum series gate resistor of 3.9 recommended and an absolute IOUT limit of -0.4A to 0.8A (tpw < 1µs, duty cycle < 10%)."+ },+ {+ "number": "7",+ "name": "VDD",+ "type": "power_in",+ "description": "Power input, shunt-regulated at 17.5V (absolute maximum VDD 19V), to be bypassed with a 1µF ceramic capacitor."+ },+ {+ "number": "8",+ "name": "REF",+ "type": "power_out",+ "description": "Buffered internal 5V reference output (5.0V typical, 4.75V to 5.25V), to be bypassed with at least a 0.47µF ceramic capacitor."+ }+ ],+ "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 numbers for the TSSOP-8 (PW) package were taken from the page 2 pin-out, whose text extraction i; The datasheet's Package Option Addendum (page 9) lists UCC2809PWTR-1 with status NRND (not recommend; Units and symbols were dropped in the text extraction (e.g., the ohm symbol on 250 and 3.9, the micr"+ ],+ "pages_sent": 24,+ "cost_usd": 0.1093,+ "at": "2026-10-08T04:16:30"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ucc2809-2",+ "pages": 24,+ "sha256": "7fc852aa75a77966",+ "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": "ucc2809pwtr-1.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4.9,+ 3,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "cf28a51742b2e31065e201d1b313207140cbfb49062efd938788f7a310d02738",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ucc2809pwtr-1-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 4.9,+ 3,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "9521bd057f6808e8986290f44afffe800b4a7666ae4413aec4a059ce86a7227d",+ "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]"+ }+}