component
78L09A
Public Made by Adomby adom
Shikues 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
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.
README
markdown78L09A
Shikues · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89
78L09A from Shikues, 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 | OUT | power_out | Regulated output of the 78L09A, specified at 9.0 V typical (8.55 V to 9.45 V over 1 mA to 140 mA), with a maximum output current of 200 mA. |
| 2 | GND | power_in | Ground reference pin of the regulator; the datasheet gives no further electrical limits for this pin. |
| 3 | IN | power_in | Unregulated input to the regulator, with an absolute maximum input voltage of 30 V; the 78L09A electrical characteristics are specified at VI = 15 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shikues |
| 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 | VO | 8.64 | 9 | 9.36 | V | Tj=25C | 3 |
| Output Voltage | VO | 8.55 | 9.45 | V | 11VVI24V, IO=1mA~80mA | 3 | |
| Load Regulation | Vo | 27 | 80 | mV | Tj=25C,IO=1mA~200mA | 3 | |
| Load Regulation | Vo | 18 | 40 | mV | Tj=25C,IO=1mA~80mA | 3 | |
| Line Regulation | Vo | 18 | 225 | mV | 11.5VVI23V,Tj=25C | 3 | |
| Line Regulation | Vo | 9 | 150 | mV | 12VVI23V,Tj=25C | 3 | |
| Quiescent Current | Iq | 2 | 5.5 | mA | Tj=25C | 3 | |
| Quiescent Current Change | Iq | 1.5 | mA | 12VVI23V | 3 | ||
| Quiescent Current Change | Iq | 0.1 | mA | 1mAVI80mA | 3 | ||
| Output Noise Voltage | VN | 60 | V | 10Hzf100kHz, Tj=25C | 3 | ||
| Ripple Rejection | RR | 36 | 45 | dB | 14VVI23V,f=120Hz,Tj=25C | 3 | |
| Dropout Voltage | Vd | 1.7 | V | 3 | |||
| Temperature coefficient of Vo | Vo/T | 0.85 | mV/C | Io=5mA | 3 | ||
| Input voltage | VIN | 30 | V | 1 | |||
| Output Current | IOUT | 200 | mA | 1 | |||
| Junction Temperature | TJ | 125 | ℃ | 1 | |||
| Operating Temperature | TOPR | -40 | 120 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -40 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
78L09A - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
78l09a-etched.step/78l09a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78l09a.step/78l09a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shikues datasheet (6 pp, sha256
a9adfda5100d9ed3, retrieved 2026-10-19, 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).