component
UCC3813DTR-4
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOIC-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 @@+# UCC3813DTR-4++**Texas Instruments** · AC-DC Controllers And Regulators · SOIC-8++UCC3813DTR-4 from Texas Instruments, 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 | COMP | output | Error amplifier output and PWM comparator input with internal soft start clamping from 0V to 5V over 4ms. |+| 2 | FB | input | Inverting input of error amplifier with 2.5V typical input voltage; minimize lead length and stray capacitance for stability. |+| 3 | CS | input | Current sense input with 1.65V/V typical gain, 100ns leading edge blanking, 0.9-1.1V maximum signal, and ±200nA input bias current. |+| 4 | RC | input | Oscillator timing programming pin; external RC network sets switching frequency up to 1MHz and maximum duty cycle (50% for UCC3813-4). |+| 5 | GND | power_in | Signal and power reference ground for all device functions; separate return paths recommended to isolate signal and gate drive currents. |+| 6 | OUT | output | High-current totem-pole gate driver output with ±750mA to ±1A peak drive capability, actively held low during UVLO, with on-chip Zener clamping to VCC. |+| 7 | VCC | power_in | Bias power supply input requiring 11V minimum from low impedance source, 0.1µF bypass capacitor, with internal Zener regulation at 13.5V typical. |+| 8 | REF | output | 5V (4.925-5.075V) regulated voltage reference output with ±1.5% accuracy at 25°C, 0.1µF bypass capacitor required, and 5mA maximum output current. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `UCC3813DTR-4`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)+- 3D model files: `ucc3813dtr-4-etched.step` / `ucc3813dtr-4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc3813dtr-4.step` / `ucc3813dtr-4.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/ucc3813-0) (53 pp, sha256 `e691a7fcf4f2163a`, retrieved 2026-10-05, 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/ucc3813dtr-4-datasheet.pdf)
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