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UL66CG-06-AB3-R

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UTC Unisonic Tech LED Drivers, SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs ul66cg-06-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers ul66cg-06-ab3-r: viewers · Ray 27d ago
package.json Publish 0.1.0 · Ray 27d ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 10d ago
README.md ul66cg-06-ab3-r: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 16d ago
ul66cg-06-ab3-r-etched.fit.json ul66cg-06-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ul66cg-06-ab3-r-etched.glb ul66cg-06-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ul66cg-06-ab3-r-etched.step ul66cg-06-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ul66cg-06-ab3-r.glb Publish 0.1.0 · Ray 27d ago
ul66cg-06-ab3-r.kicad_mod Publish 0.1.0 · Ray 27d ago
ul66cg-06-ab3-r.kicad_sym Publish 0.1.0 · Ray 27d ago
ul66cg-06-ab3-r.lbr Publish 0.1.0 · Ray 27d ago
ul66cg-06-ab3-r.step Publish 0.1.0 · Ray 27d ago

UL66CG-06-AB3-R

UTC Unisonic Tech · LED Drivers · SOT-89

UL66CG-06-AB3-R from UTC Unisonic Tech, in a SOT-89. 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 OUT output Current output pin. Connects to the cathode of the LED string; sinks the regulated constant current (5-60mA) set by REXT. Withstands up to 450V when IOUT=0; drops ~6.5V at IOUT=30mA.
2 GND power_in Ground reference for the device. Return path for internal LDO and current-sense circuitry.
3 REXT input Output current setting pin. An external resistor from REXT to GND programs the constant output current; VREXT is regulated to 0.6V typical (IOUT ≈ 0.6V / REXT).

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
Package SOT-89
Category LED-drv
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • UL66CG-06-AB3-R
  • UL66CG-06-AB3-RAA3
  • UL66CG-06-AB3-RTN3

CAD (KiCad official)

  • Symbol: UL66CG-06-AB3-R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: ul66cg-06-ab3-r-etched.step / ul66cg-06-ab3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ul66cg-06-ab3-r.step / ul66cg-06-ab3-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (4 pp, sha256 137cf1e91d08342f, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF