component
UCC3803DTR
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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownUCC3803DTR
Texas Instruments · AC-DC Controllers And Regulators · SOIC-8
UCC3803DTR 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 current limiting and full-cycle soft-start clamping capability. |
| 2 | FB | input | Inverting input of the error amplifier; keep lead length and stray capacitance as small as possible for optimal stability. |
| 3 | CS | input | Current-sense input for PWM and over-current comparators with internal 100ns leading-edge blanking, eliminating need for external RC filtering. |
| 4 | RC | input | Oscillator timing pin; frequency set by external resistor (10kΩ-200kΩ from REF) and capacitor (100pF-1000pF to GND) for operation up to 1MHz. |
| 5 | GND | power_in | Reference and power ground for all device functions; use separate ground traces for timing capacitor and gate-driver current paths. |
| 6 | OUT | output | High-current power driver output with ±750mA+ peak current capability for driving MOSFET gates; provides low impedance to VCC and GND with minimal overshoot/undershoot. |
| 7 | VCC | power_in | Power supply input normally supplied through current-limiting resistor; bypass with 0.1µF-1µF capacitor placed close to the pin. |
| 8 | REF | output | Voltage reference output (4V for UCC3803) with 1.5% accuracy for error amplifier and internal circuit functions; pulled low through 5kΩ resistor when VCC is between 1V and UVLO threshold. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
UCC3803DTR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ucc3803dtr-etched.step/ucc3803dtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc3803dtr.step/ucc3803dtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (59 pp, sha256
3f7e3ad23bdb4f2f, 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).