component
UCC3813DTR-3
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.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownUCC3813DTR-3
Texas Instruments · AC-DC Controllers And Regulators · SOIC-8
UCC3813DTR-3 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; soft start ramps voltage from 0V to REF-1V over 4ms; feedback loop compensation network connected between COMP and FB pins. |
| 2 | FB | input | Inverting input of error amplifier; error amplifier non-inverting input internally biased to REF/2 (2V nominal for UCC3813-3); minimize lead length and parasitic capacitance for optimal stability. |
| 3 | CS | input | Current sense comparator input (PWM and overcurrent) with 100ns leading edge blanking; gain 1.65V/V typical; maximum input signal 1V when COMP = 5V. |
| 4 | RC | input | Oscillator timing programming pin; external resistor (10kΩ to 200kΩ) and capacitor (100pF to 1000pF) program switching frequency up to 1MHz and maximum duty cycle. |
| 5 | GND | power_in | Signal return ground and power return ground for all device functions. |
| 6 | OUT | output | High-current MOSFET gate driver output; peak current capability ±1A; actively held low during UVLO condition; on-chip Zener clamp limits voltage to VCC. |
| 7 | VCC | power_in | Bias power supply input; typical operating voltage 10V; connect through current-limiting resistor; internal 13.5V Zener clamp limits maximum voltage; requires 0.1µF bypass capacitor to GND. |
| 8 | REF | output | Voltage reference output nominally 4V with ±1.5% tolerance at 25°C 0.2mA load; provides bias to error amplifier and logic functions; requires 0.1µF bypass capacitor to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
UCC3813DTR-3 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ucc3813dtr-3-etched.step/ucc3813dtr-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc3813dtr-3.step/ucc3813dtr-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (53 pp, sha256
e691a7fcf4f2163a, retrieved 2026-09-24, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).