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U3211

Public Made by Adom

by adom

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

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs u3211: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers u3211: viewers · Ray 1mo ago
package.json u3211: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json u3211: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md Initial commit: component/u3211 · Ray 1mo ago
u3211-etched.fit.json u3211: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
u3211-etched.glb u3211: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
u3211-etched.step u3211: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
u3211.glb Publish 0.1.0 · Ray 1mo ago
u3211.kicad_mod Publish 0.1.0 · Ray 1mo ago
u3211.kicad_sym Publish 0.1.0 · Ray 1mo ago
u3211.lbr Publish 0.1.0 · Ray 1mo ago
u3211.step Publish 0.1.0 · Ray 1mo ago

U3211

UNI SEMIC · AC-DC Controllers And Regulators · SOP-8

U3211 from UNI SEMIC, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD power_in Chip positive supply pin; also serves as output voltage feedback reference when FB pin floats; typical application requires 100nF bypass capacitor on this pin.
2 GND power_in Chip reference ground.
3 FB input Feedback input pin for output voltage regulation; when this pin floats, default output voltage is 12V.
4 CS output Peak current detection output pin for inductor peak current monitoring and cycle-by-cycle current limiting.
5 Drain output Internal high voltage MOSFET drain; operating voltage range −0.3 V to 650 V, rated breakdown voltage 650 V, static on-resistance 4.5 Ω.
6 Drain output Internal high voltage MOSFET drain; operating voltage range −0.3 V to 650 V, rated breakdown voltage 650 V, static on-resistance 4.5 Ω.
7 Drain output Internal high voltage MOSFET drain; operating voltage range −0.3 V to 650 V, rated breakdown voltage 650 V, static on-resistance 4.5 Ω.
8 Drain output Internal high voltage MOSFET drain; operating voltage range −0.3 V to 650 V, rated breakdown voltage 650 V, static on-resistance 4.5 Ω.

Key specifications

Parameter Value
Manufacturer UNI SEMIC
Package SOP-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: U3211
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: u3211-etched.step / u3211-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); u3211.step / u3211.glb are the bare package body.

Provenance

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

  • Datasheet: UNI SEMIC datasheet (10 pp, sha256 ebcf7302fc1b0f4a, retrieved 2026-09-18, 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, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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