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LM7905S

Public Made by Adom

by adom

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-3. 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 lm7905s: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
lm7905s-etched.fit.json lm7905s: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm7905s-etched.glb lm7905s: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
lm7905s-etched.step lm7905s: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
lm7905s.glb Publish 0.1.0 · Ray
lm7905s.kicad_mod Publish 0.1.0 · Ray
lm7905s.kicad_sym Publish 0.1.0 · Ray
lm7905s.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
lm7905s.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 lm7905s: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
README.md lm7905s: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

LM7905S

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-3

LM7905S from HGSEMI, in a TO-263-3. 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 the regulator. Both input and output voltages are referenced to this pin.
2 INPUT power_in Unregulated negative input supply. For LM7905 operating range is -7.0 V >= VIN >= -20 V (absolute max -35 V). Requires a 2.2 uF input decoupling capacitor to ground.
3 OUTPUT power_out Regulated -5.0 V output (typ.), -4.82 V to -5.18 V over 5 mA to 1.0 A load. Requires >=1.0 uF output capacitor to ground for stability.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-263-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LM7905SS/TR
  • LM7905ST
  • LM7905SS2/TR

CAD (KiCad official)

  • Symbol: LM7905S
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-3 (KiCad packages3D, STEP)
  • 3D model files: lm7905s-etched.step / lm7905s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm7905s.step / lm7905s.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm7905s.step 108 KB You want the bare part, or you mark your own boards.
lm7905s-etched.step 1.3 MB You want the part with LM7905S 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 79 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: HGSEMI datasheet (10 pp, sha256 7e5f09b8cf107bcf, 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