component

78L12MG-AB3-R

Public Made by Adom

by adom

UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)78l12mg-ab3-rfactory-2.0.0extractor-text
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 Publish 0.1.0 · Ray 7d ago
viewers 78l12mg-ab3-r: viewers · Ray 7d ago
78l12mg-ab3-r-etched.glb Publish 0.1.0 · Ray 7d ago
78l12mg-ab3-r-etched.step 78l12mg-ab3-r: factory component page (tier=lcsc) · Ray 7d ago
78l12mg-ab3-r-hero.glb 78l12mg-ab3-r: hero GLB from the etched model (keeps the MPN mark) · Ray 7d ago
78l12mg-ab3-r-hero.overlay.json Publish 0.1.0 · Ray 7d ago
78l12mg-ab3-r.glb Publish 0.1.0 · Ray 7d ago
78l12mg-ab3-r.kicad_mod Publish 0.1.0 · Ray 7d ago
78l12mg-ab3-r.kicad_sym Publish 0.1.0 · Ray 7d ago
78l12mg-ab3-r.lbr Publish 0.1.0 · Ray 7d ago
78l12mg-ab3-r.step Publish 0.1.0 · Ray 7d ago
package.json Publish 0.1.0 · Ray 7d ago
page.json Set visibility: public · Ray 7d ago
README.md Publish 0.1.0 · Ray 7d ago

78L12MG-AB3-R

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

78L12MG-AB3-R from UTC Unisonic Tech, in a SOT-89. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUTPUT power_out Regulated 12 V output, rated for up to 200 mA output current, with 11.40 V to 12.60 V output at 1 mA to 40 mA over a 14.5 V to 27 V input.
2 GND power_in Ground pin, the common reference for the regulator.
3 INPUT power_in Unregulated input voltage, with an absolute maximum of 35 V for the 10 V to 24 V output versions (which includes the 12 V version), and a 0.33 µF input bypass capacitor (C1) recommended as close to the regulator as possible.

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
Package SOT-89
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage VOUT 11.52 12 12.48 V TJ=25°C 5
Output Voltage VOUT 11.4 12.6 V 14.5V≦VIN≦27V,IOUT=1mA ~ 40mA 5
Load Regulation VOUT 25 100 mV TJ=25°C, IOUT=1mA ~ 100mA 5
Load Regulation VOUT 12 50 mV TJ=25°C, IOUT=1mA ~ 40mA 5
Line Regulation VOUT 25 300 mV 14.5V≦VIN≦27V,TJ=25°C 5
Line Regulation VOUT 20 250 mV 16V≦VIN≦27V,TJ=25°C 5
Quiescent Current IQ 2 6.5 mA 5
Quiescent Current Change IQ 1.5 mA 16V≦VIN≦27V 5
Quiescent Current Change IQ 0.1 mA 1mA≦VIN≦40mA 5
Output Noise Voltage eN 80 μV 10Hz≦f≦100kHz 5
Temperature Coefficient of VOUT VO/T -1 mV/°C IOUT=5mA 5
Ripple Rejection RR 45 dB 15V≦VIN≦25V, f=120Hz,TJ=25°C 5
Dropout Voltage VD 1.7 V TJ=25°C 5
Input Voltage VIN 35 V VOUT=10~24V 3
Output Current IOUT 200 mA 3
Power Dissipation (SOT-89) PD 350 mW SOT-89 3
Junction Temperature TJ 150 °C 3
Storage Temperature TSTG -55 150 °C 3
Ambient Operating Temperature TOPR -40 125 °C 3
Junction Temperature Test Range TJ 0 125 °C Electrical characteristics table header (C1=0.33uF, CO=0.1uF, unless otherwise specified) 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper Note: 1. The Maximum steady state usable output current are dependent on input voltage, heat sinking, lead length of the package and copper pattern of PCB. The data above represent pulse test conditio 6

CAD (KiCad official)

  • Symbol: 78L12MG-AB3-R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 78l12mg-ab3-r-etched.step / 78l12mg-ab3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78l12mg-ab3-r.step / 78l12mg-ab3-r.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: UTC Unisonic Tech datasheet (8 pp, sha256 7efe8f4bcde8758d, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF