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HT7550

Public Made by Adom

by adom

TWGMC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout extracted from 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 ht7550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
ht7550-etched.fit.json ht7550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ht7550-etched.glb ht7550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ht7550-etched.step ht7550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ht7550.glb Publish 0.1.0 · Ray
ht7550.kicad_mod Publish 0.1.0 · Ray
ht7550.kicad_sym Publish 0.1.0 · Ray
ht7550.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
ht7550.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json ht7550: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md ht7550: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

HT7550

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

HT7550 from TWGMC, in a SOT-23. 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 return for input and output. Pin 1 of the SOT-23 package (bottom-left when viewed from the top with the marking upright).
2 VOUT power_out Regulated fixed +5.0V output (typ. 5.0V, min 4.85V, max 5.15V at IOUT=10mA). Sources up to 100mA (rated) / 150mA (typ.). A small output capacitor (≥1µF) is recommended for stability.
3 VIN power_in Unregulated supply input. Operating input up to 24V (line-regulation spec limit), absolute maximum +30V. Typical dropout ~100mV at 1mA. An input decoupling capacitor is recommended.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • HT7550
  • HT7550-1

CAD (KiCad official)

  • Symbol: HT7550
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ht7550-etched.step / ht7550-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht7550.step / ht7550.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ht7550.step 59 KB You want the bare part, or you mark your own boards.
ht7550-etched.step 1.1 MB You want the part with HT7550 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 268 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: TWGMC datasheet (12 pp, sha256 d0d358ba595fe029, 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