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78L05MG-AB3-R

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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.

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78L05MG-AB3-R

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

78L05MG-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 output voltage of 5 V for this 78L05 variant, with output current up to 200 mA.
2 GND power_in Ground reference terminal for the regulator.
3 INPUT power_in Unregulated input voltage; absolute maximum is 30 V for 5-9 V outputs and 35 V for 12-24 V outputs.

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 (TJ=25°C) VOUT 4.8 5 5.2 V TJ=25°C, UTC78L05M (VIN=10V, IOUT=40mA) 3
Output Voltage VOUT 4.75 5.25 V 7V≦VIN≦20V, IOUT=1mA ~ 40mA 3
Load Regulation VOUT 11 60 mV TJ=25°C, IOUT=1mA ~ 100mA 3
Load Regulation VOUT 5 30 mV TJ=25°C, IOUT=1mA ~ 40mA 3
Line Regulation VOUT 8 150 mV 7V≦VIN≦20V, TJ=25°C 3
Line Regulation VOUT 6 100 mV 8V≦VIN≦20V, TJ=25°C 3
Quiescent Current IQ 2 5.5 mA 3
Quiescent Current Change IQ 1.5 mA 8V≦VIN≦20V 3
Quiescent Current Change IQ 0.1 mA 1mA≦VIN≦40mA 3
Ripple Rejection RR 41 80 dB 8V≦VIN≦20V, f=120Hz, TJ=25°C 3
Dropout Voltage VD 1.7 V TJ=25°C 3
Output Noise Voltage eN 40 μV 10Hz≦f≦100kHz 3
Temperature Coefficient of VOUT VO/T -0.65 mV/°C IOUT=5mA 3
Input Voltage (VOUT=5~9V) VIN 30 V VOUT=5~9V 3
Output Current IOUT 200 mA 3
Power Dissipation PD 500 mW SOT-89 package 3
Ambient Operating Temperature TOPR -40 85 °C 3
Storage Temperature TSTG -55 150 °C 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: 78L05MG-AB3-R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: 78l05mg-ab3-r-etched.step / 78l05mg-ab3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78l05mg-ab3-r.step / 78l05mg-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 5513659f9acccf61, retrieved 2026-10-16, 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