component
LR78L15A
Public Made by Adomby adom
LRC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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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README
markdownLR78L15A
LRC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
LR78L15A from LRC, 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 15V output of the LR78L15A, rated for output current up to 100mA per the datasheet features. |
| 2 | GND | power_in | Common ground reference pin of the regulator; the datasheet states no separate electrical limit for this pin. |
| 3 | Input | power_in | Unregulated input supply, with an absolute maximum input voltage of 35V for the 12V to 24V output versions, which covers the 15V part. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-89-3 |
| 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=25C) | VO | 14.4 | 15 | 15.6 | V | Tj=25C | 3 |
| Output Voltage | VO | 14.25 | 15.75 | V | 17.5V<=VI<=30V, IO=1mA~40mA | 3 | |
| Load Regulation | Vo | 45 | 150 | mV | Tj=25C, IO=1mA~100mA | 3 | |
| Load Regulation | Vo | 30 | 75 | mV | Tj=25C, IO=1mA~40mA | 3 | |
| Line Regulation | Vo | 30 | 300 | mV | 17.5V<=VI<=30V, Tj=25C | 3 | |
| Line Regulation | Vo | 15 | 250 | mV | 20V<=VI<=30V, Tj=25C | 3 | |
| Quiescent Current | Iq | 2.2 | 6 | mA | IO=0mA, Tj=25C | 3 | |
| Quiescent Current Change | Iq | 1.5 | mA | 20V<=VI<=30V | 3 | ||
| Quiescent Current Change | Iq | 0.1 | mA | 1mA<=IO<=40mA | 3 | ||
| Ripple Rejection | RR | 33 | 39 | dB | 18.5V<=VI<=28.5V, f=120Hz, Tj=25C | 3 | |
| Dropout Voltage | Vd | 1.7 | V | 3 | |||
| Output Noise Voltage | VN | 90 | V | 10Hz<=f<=100kHz, Tj=25C | 3 | ||
| Temperature Coefficient of Vo | Vo/T | 1.3 | mV/C | Io=5mA | 3 | ||
| Input Voltage (for Vo=12~24V) | VI | 35 | V | Vo=12~24V | 1 | ||
| Output Current | Io | 100 | mA | 1 | |||
| Power Dissipation (SOT-89) | PD | 500 | mW | SOT-89 | 1 | ||
| Operating Ambient Temperature | TOPR | -40 | 125 | °C | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 1 | ||
| Operating Junction Temperature | TJ | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
LR78L15A - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
lr78l15a-etched.step/lr78l15a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lr78l15a.step/lr78l15a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (6 pp, sha256
a49a118b686fea89, retrieved 2026-10-09, 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).