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78L05MG-AB3-R
Public Made by Adomby 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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdown78L05MG-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78l05mg-ab3-r.step/78l05mg-ab3-r.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).