component
78L15MG-AB3-R
Public Made by Adomby adom
UTC(Unisonic Tech) Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdown78L15MG-AB3-R
UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · SOT-89-3
78L15MG-AB3-R from UTC(Unisonic Tech), in a SOT-89-3. 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 fixed output voltage (15V for 78L15M) delivering up to 200mA, with a 0.1µF output capacitor recommended close to the regulator. |
| 2 | GND | power_in | Ground reference pin shared by the input and output. |
| 3 | INPUT | power_in | Unregulated supply input, rated up to 35V maximum for 12-24V output versions, with a 0.33µF bypass capacitor recommended close to the regulator. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 | 14.4 | 15 | 15.6 | V | TJ=25°C, VIN=23V, IOUT=40mA | 5 |
| Output Voltage | VOUT | 14.25 | 15.75 | V | 17.5V≦VIN≦30V, IOUT=1mA ~ 40mA | 5 | |
| Load Regulation | ΔVOUT | 20 | 150 | mV | TJ=25°C, IOUT=1mA ~ 100mA | 5 | |
| Load Regulation | ΔVOUT | 25 | 150 | mV | TJ=25°C, IOUT=1mA ~ 70mA | 5 | |
| Line Regulation | ΔVOUT | 25 | 150 | mV | 17.5V≦VIN≦30V, TJ=25°C | 5 | |
| Line Regulation | ΔVOUT | 15 | 75 | mV | 20V≦VIN≦30V, TJ=25°C | 5 | |
| Quiescent Current | IQ | 2.2 | 6.5 | mA | 5 | ||
| Quiescent Current Change | ΔIQ | 1.5 | mA | 20V≦VIN≦30V | 5 | ||
| Quiescent Current Change | ΔIQ | 0.1 | mA | 1mA≦IOUT≦40mA | 5 | ||
| Ripple Rejection | RR | 34 | 63 | dB | 18.5V≦VIN≦28.5V, f=120Hz, TJ=25°C | 5 | |
| Output Noise Voltage | eN | 90 | μV | 10Hz≦f≦100kHz | 5 | ||
| Temperature Coefficient of VOUT | ΔVO/ΔT | -1.3 | mV/°C | IOUT=5mA | 5 | ||
| Dropout Voltage | VD | 1.7 | V | TJ=25°C | 5 | ||
| Input Voltage | VIN | 30 | V | VOUT=5 |
3 | ||
| Input Voltage | VIN | 35 | V | VOUT=12~24V | 3 | ||
| Output Current | IOUT | 200 | mA | 3 | |||
| Power Dissipation | PD | 500 | mW | SOT-89 | 3 | ||
| Ambient Operating Temperature | TOPR | -40 | 85 | °C | 3 | ||
| Storage Temperature | TSTG | -55 | 150 | °C | 3 | ||
| Junction Temperature (electrical characteristics range) | TJ | 0 | 125 | °C | C1=0.33uF, CO=0.1uF | 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:
78L15MG-AB3-R - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
78l15mg-ab3-r-etched.step/78l15mg-ab3-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78l15mg-ab3-r.step/78l15mg-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 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).