component

UM1750S-00

Public Unreviewed

by Ray

Union Semiconductor Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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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UM1750S-00

Union Semiconductor · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

UM1750S-00 from Union Semiconductor, in a SOT-23-5. 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 IN power_in Power supply input. Operating range 2.5V to 6.0V; absolute max +7.5V. Bypass with 1µF ceramic capacitor to GND.
2 GND power_in Ground reference for the regulator.
3 SHDN input Active-low shutdown control input. High (≥2.0V) activates the LDO; low (≤0.4V) puts the device in shutdown (<1µA leakage). Input current ±1µA. Do not leave floating.
4 FB input Output voltage feedback input for the adjustable version. Internally regulated to VFB = 1.00V (typ, range 0.98-1.02V). Connect to a resistor divider from OUT to set VOUT = 1.00V × (1 + R1/R2).
5 OUT power_out Regulated voltage output, adjustable 1.0V to 5.0V, 350mA max. Requires ≥1µF ceramic bypass capacitor to GND for stability.

Key specifications

Parameter Value
Manufacturer Union Semiconductor
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • UM1750S-00
  • UM1750Y-00
  • UM1750DA-00

The extractor listed these alongside UM1750S-00, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • UM1750S-10
  • UM1750S-11
  • UM1750S-12
  • UM1750S-13
  • UM1750S-14
  • UM1750S-15
  • UM1750S-16
  • UM1750S-17
  • UM1750S-18
  • UM1750S-19
  • UM1750S-20
  • UM1750S-21
  • UM1750S-22
  • UM1750S-23
  • UM1750S-24
  • UM1750S-25
  • UM1750S-26
  • UM1750S-27
  • UM1750S-28
  • UM1750S-29
  • UM1750S-30
  • UM1750S-31
  • UM1750S-32
  • UM1750S-33
  • UM1750S-34
  • UM1750S-35
  • UM1750S-36
  • UM1750S-37
  • UM1750S-38
  • UM1750S-39
  • UM1750S-40

CAD (KiCad official)

  • Symbol: UM1750S-00
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
um1750s-00.step 85 KB You want the bare part, or you mark your own boards.
um1750s-00-etched.step 1.9 MB You want the part with UM1750S-00 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 469 faces against 102 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: Union Semiconductor datasheet (18 pp, sha256 523469d0bffb7671, retrieved 2026-08-17, tier: lcsc)
  • 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