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UT7500G-33-AB3-C-R

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by Ray

UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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Contents

README

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UT7500G-33-AB3-C-R

UTC Unisonic Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

UT7500G-33-AB3-C-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 GND power_in Ground/common reference terminal. Carries the quiescent bias current (I_SS, typ 10µA) as well as the return path for the load current.
2 VIN power_in Unregulated supply input. Operating range up to 24V (absolute max 26V). A 10µF bypass capacitor to GND is recommended per the typical application circuit; recommended V_IN for 3.3V output is 5.5V (must be at least V_OUT + dropout).
3 VOUT power_out Regulated 3.3V output (3.20V min / 3.40V max at I_OUT=10mA, V_IN=5.5V). Delivers up to 100mA within the package power dissipation limit (P_D ≤ 250mW). A 10µF output capacitor to GND is recommended for stability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • UT7500G-33-AB3-C-R
  • UT7500L-33-AB3-C-R
  • UT7500G-33-AB3-B-R
  • UT7500L-33-AB3-B-R
  • UT7500G-33-T92-B-B
  • UT7500G-33-T92-B-K
  • UT7500G-33-T92-C-B
  • UT7500G-33-T92-C-K

CAD (KiCad official)

  • Symbol: UT7500G-33-AB3-C-R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ut7500g-33-ab3-c-r.step 57 KB You want the bare part, or you mark your own boards.
ut7500g-33-ab3-c-r-etched.step 2.4 MB You want the part with UT7500G-33-AB3-C-R already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 609 faces against 42 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (7 pp, sha256 ff9eee8ce9d620ad, 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