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HT7533S

Public Unreviewed

by Ray

UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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HT7533S

UMW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

HT7533S from UMW, in a SOT-23. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Device ground / return reference for the internal bandgap and pass transistor. Tie directly to the system ground plane.
2 VIN power_in Unregulated input supply, 4.5V to 30V absolute maximum. Bypass to GND with a 10µF ceramic/electrolytic capacitor near the pin.
3 VOUT power_out Regulated 3.3V ±3% output, up to 100mA (60mA min). Requires a 10µF output capacitor to GND for stability; dropout ~100mV at 1mA.

Key specifications

Parameter Value
Manufacturer UMW
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • HT7533SS

CAD (KiCad official)

  • Symbol: HT7533S
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ht7533s.step 59 KB You want the bare part, or you mark your own boards.
ht7533s-etched.step 1.4 MB You want the part with HT7533S already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 344 faces against 69 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: UMW datasheet (15 pp, sha256 c8d27849b87576cd, 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