component
UCC3808APWTR-2
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, TSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# UCC3808APWTR-2++**Texas Instruments** · AC-DC Controllers And Regulators · TSSOP-8++UCC3808APWTR-2 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 | OUTA | output | Alternating high-current output stage providing 500mA peak pull current and 1A peak sink current for power MOSFET gate drive; switches at half oscillator frequency with 60-200ns dead time between outputs and low-impedance overshoot/undershoot clamping. |+| 2 | VDD | power_in | Power supply input; bypass to GND with 1µF decoupling ceramic capacitor placed close to package plus electrolytic storage capacitor; operating range 5-14V for UCC3808A-2. |+| 3 | COMP | output | Error amplifier output and PWM comparator input; 2MHz bandwidth operational amplifier with low output impedance capable of sourcing and sinking current; includes internal current limiting and full-cycle soft-start via voltage clamping. |+| 4 | FB | input | Error amplifier non-inverting input; maintain minimal lead length and stray capacitance for optimal stability and noise immunity. |+| 5 | CS | input | Current sense input for peak current and overcurrent comparator with 1.9-2.5V/V gain; internal MOSFET discharges external filter capacitor during oscillator dead time; 0.7-0.8V overcurrent threshold triggers soft-start cycle. |+| 6 | RC | output | Oscillator frequency programming pin generating sawtooth output; connect external timing resistor (10kΩ-200kΩ recommended) from VDD and timing capacitor (100pF-1000pF recommended) to GND; frequency ≈ 1.41/(√RC). |+| 7 | GND | power_in | Reference and power ground for all functions; use low-impedance PCB ground plane due to high current and high frequency operation of this device. |+| 8 | OUTB | output | Alternating high-current output stage providing 500mA peak pull current and 1A peak sink current for power MOSFET gate drive; switches at half oscillator frequency with 60-200ns dead time between outputs and low-impedance overshoot/undershoot clamping. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `UCC3808APWTR-2`+- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`+- 3D model: TSSOP-8 (KiCad packages3D, STEP)+- 3D model files: `ucc3808apwtr-2-etched.step` / `ucc3808apwtr-2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc3808apwtr-2.step` / `ucc3808apwtr-2.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/ucc3808a-2) (27 pp, sha256 `a8e88286e9a900bf`, retrieved 2026-10-07, 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/ucc3808apwtr-2-datasheet.pdf)
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switches at half oscillator frequency with 60-200ns dead time between outputs and low-impedance overshoot/undershoot clamping."+ },+ {+ "number": "2",+ "name": "VDD",+ "type": "power_in",+ "description": "Power supply input; bypass to GND with 1µF decoupling ceramic capacitor placed close to package plus electrolytic storage capacitor; operating range 5-14V for UCC3808A-2."+ },+ {+ "number": "3",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output and PWM comparator input; 2MHz bandwidth operational amplifier with low output impedance capable of sourcing and sinking current; includes internal current limiting and full-cycle soft-start via voltage clamping."+ },+ {+ "number": "4",+ "name": "FB",+ "type": "input",+ "description": "Error amplifier non-inverting input; maintain minimal lead length and stray capacitance for optimal stability and noise immunity."+ },+ {+ "number": "5",+ "name": "CS",+ "type": "input",+ "description": "Current sense input for peak current and overcurrent comparator with 1.9-2.5V/V gain; internal MOSFET discharges external filter capacitor during oscillator dead time; 0.7-0.8V overcurrent threshold triggers soft-start cycle."+ },+ {+ "number": "6",+ "name": "RC",+ "type": "output",+ "description": "Oscillator frequency programming pin generating sawtooth output; connect external timing resistor (10kΩ-200kΩ recommended) from VDD and timing capacitor (100pF-1000pF recommended) to GND; frequency ≈ 1.41/(√RC)."+ },+ {+ "number": "7",+ "name": "GND",+ "type": "power_in",+ "description": "Reference and power ground for all functions; use low-impedance PCB ground plane due to high current and high frequency operation of this device."+ },+ {+ "number": "8",+ "name": "OUTB",+ "type": "output",+ "description": "Alternating high-current output stage providing 500mA peak pull current and 1A peak sink current for power MOSFET gate drive; switches at half oscillator frequency with 60-200ns dead time between outputs and low-impedance overshoot/undershoot clamping."+ }+ ],+ "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": 0.1893,+ "at": "2026-10-07T08:34:57"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/ucc3808a-2",+ "pages": 27,+ "sha256": "a8e88286e9a900bf",+ "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": "ucc3808apwtr-2.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": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "ucc3808apwtr-2-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": "7642dd2de8e4ff19fbdf29ac3c8c9798d37454b50408a3f997920f6783102488",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}