component
UCC28C44D
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
markdownUCC28C44D
Texas Instruments · AC-DC Controllers And Regulators · SOIC-8
UCC28C44D 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 with internal current limiting; force to ground to set zero duty cycle. |
| 2 | FB | input | Feedback input to error amplifier with internal 2.5V±1% reference for output voltage control. |
| 3 | CS | input | Current sense input to PWM comparator connected to primary-side current sense resistor. |
| 4 | RT/CT | bidirectional | Oscillator timing node connected to timing resistor RRT and capacitor CCT for frequency programming up to 1MHz. |
| 5 | GND | power_in | Ground return for output driver and logic control circuits. |
| 6 | OUT | output | Totem-pole output driver providing ±1A peak current for MOSFET gate drive with 25ns rise time and 20ns fall time. |
| 7 | VDD | power_in | Analog controller bias supply input with 20V absolute maximum; requires 0.1µF ceramic bypass capacitor to ground. |
| 8 | VREF | power_out | 5V reference voltage output with ±1% initial accuracy; requires 0.1µF ceramic bypass capacitor close to pin for stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
UCC28C44D - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ucc28c44d-etched.step/ucc28c44d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc28c44d.step/ucc28c44d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (60 pp, sha256
96c53984cf7d699f, 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).