component

UC3853DTR

Public Made by Adom

by adom

Texas Instruments AC-DC Controllers And Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)uc3853dtrfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 19d ago
viewers uc3853dtr: viewers · Ray 19d ago
package.json Publish 0.1.0 · Ray 19d ago
page.json Set visibility: public · Ray 19d ago
README.md Publish 0.1.0 · Ray 19d ago
uc3853dtr-etched.glb uc3853dtr: factory component page (tier=lcsc) · Ray 19d ago
uc3853dtr-etched.step uc3853dtr: factory component page (tier=lcsc) · Ray 19d ago
uc3853dtr-hero.glb uc3853dtr: hero GLB from the etched model (keeps the MPN mark) · Ray 19d ago
uc3853dtr-hero.overlay.json Publish 0.1.0 · Ray 19d ago
uc3853dtr.glb Publish 0.1.0 · Ray 19d ago
uc3853dtr.kicad_mod Publish 0.1.0 · Ray 19d ago
uc3853dtr.kicad_sym Publish 0.1.0 · Ray 19d ago
uc3853dtr.lbr Publish 0.1.0 · Ray 19d ago
uc3853dtr.step Publish 0.1.0 · Ray 19d ago

UC3853DTR

Texas Instruments · AC-DC Controllers And Regulators · SOIC-8

UC3853DTR 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 IAC input AC waveform input to the multiplier, a low-impedance input nominally at 2V that accepts a current proportional to input voltage (resistor sized for 500mA at maximum line; absolute maximum input current 1mA).
2 VCC power_in Input supply voltage and RMS line-voltage signal to the squarer, operating range 12V to 40V, bypassed with at least a 0.1µF ceramic capacitor.
3 OUT output Gate driver output with 15V clamp for the external power MOSFET, use at least 5 ohm series gate resistor, 0.125A continuous and 0.5A peak drive current.
4 GND power_in Ground reference for all voltages, with the VCC bypass capacitor connected as close to this pin as possible.
5 FB input Voltage amplifier inverting input, overvoltage comparator input and sync input, regulated to a nominal 3V, trips OVP at 5% above nominal, maximum input voltage 5V.
6 VCOMP output Voltage loop transconductance error amplifier output, compensated with impedance to GND, multiplier output current is zero below 1.5V, maximum voltage 6.2V.
7 IMO bidirectional Multiplier output current and current amplifier inverting input summing node, avoid going below -0.5V, input resistance should be 3.9k, maximum output current -2mA.
8 ICOMP output Current loop error amplifier output with 150µA current source class A stage, compensated by impedance between ICOMP and IMO, sinks 20mA maximum and 7.2V maximum voltage.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: UC3853DTR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: uc3853dtr-etched.step / uc3853dtr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uc3853dtr.step / uc3853dtr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (11 pp, sha256 b2507c5b7940ba26, retrieved 2026-10-11, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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