component

78L05G-AB3-R

Public Made by Adom

by adom

UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentpmic78l05g-ab3-r
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs 78l05g-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
78l05g-ab3-r-etched.fit.json 78l05g-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
78l05g-ab3-r-etched.glb 78l05g-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
78l05g-ab3-r-etched.step 78l05g-ab3-r: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
78l05g-ab3-r.glb Publish 0.1.0 · Ray 2mo ago
78l05g-ab3-r.kicad_mod Publish 0.1.0 · Ray 2mo ago
78l05g-ab3-r.kicad_sym Publish 0.1.0 · Ray 2mo ago
78l05g-ab3-r.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 2mo ago
78l05g-ab3-r.step Publish 0.1.0 · Ray 2mo ago
package.json Publish 0.2.0 · Ray 2mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 2mo ago
page.json 78l05g-ab3-r: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 28d ago
README.md 78l05g-ab3-r: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

78L05G-AB3-R

UTC Unisonic Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

78L05G-AB3-R from UTC Unisonic Tech, in a SOT-89-3. 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 OUT power_out Regulated +5V output. Delivers up to 100mA with typical dropout of 1.7V. A 0.1uF ceramic bypass capacitor to GND is recommended close to the pin for stability and transient response.
2 GND power_in Common ground reference for both input and output. Also serves as the thermal path to the PCB copper pattern for SOT-89 heat dissipation (PD = 350mW).
3 IN power_in Unregulated DC input. Recommended range 7V-20V for the 5V variant (absolute maximum 30V for 5-9V output devices). A 0.33uF bypass capacitor to GND close to the pin is recommended when the regulator is far from the input filter.

Key specifications

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

Ordering variants

  • 78L05G-AB3-R
  • 78L05G-AB3-R78L05G-AB3-C-R
  • 78L05G-AB3-R78L05G-AF5-R
  • 78L05G-AB3-R78L05G-S08-R
  • 78L05G-AB3-R78L05G-T92-B
  • 78L05G-AB3-R78L05G-T92-K
  • 78L05G-AB3-R78L05L-T92-B
  • 78L05G-AB3-R78L05L-T92-K
  • 78L05G-AB3-R78L05G-T9N-B
  • 78L05G-AB3-R78L05G-T9N-K
  • 78L05G-AB3-R78L05L-T9N-B
  • 78L05G-AB3-R78L05L-T9N-K

CAD (KiCad official)

  • Symbol: 78L05G-AB3-R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: 78l05g-ab3-r-etched.step / 78l05g-ab3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78l05g-ab3-r.step / 78l05g-ab3-r.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
78l05g-ab3-r.step 57 KB You want the bare part, or you mark your own boards.
78l05g-ab3-r-etched.step 1.7 MB You want the part with 78L05G-AB3-R already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 449 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 (8 pp, sha256 019cf0ff8e450efc, 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