# 78L08K

**Shikues** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

78L08K 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 78L08K, rated for a maximum output current of 100 mA with an 8 V nominal output (7.6 V to 8.4 V over 10 V to 23 V input and 1 mA to 40 mA load at 25 °C to 125 °C). |
| 2 | GND | power_in | Ground reference pin for the regulator; the datasheet gives no separate limit for this pin. |
| 3 | IN | power_in | Unregulated input to the regulator, with an absolute maximum input voltage of 30 V for the 4.4 V to 10 V output variants (the 78L08K falls in this group). |

## 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 |
|---|---|---|---|---|---|---|---|
| Input voltage (VOUT=4.4~10V) | VIN |  |  | 30 | V | VOUT=4.4~10V | 1 |
| Output Current | IOUT |  |  | 100 | mA |  | 1 |
| Junction Temperature | TJ |  |  | 125 | C |  | 1 |
| Operating Temperature | TOPR | -40 |  | 125 | C |  | 1 |
| Storage Temperature Range | TSTG | -40 |  | 150 | C |  | 1 |
| Output Voltage | VO | 7.7 | 8 | 8.3 | V | Tj=25C | 3 |
| Output Voltage | VO | 7.6 |  | 8.4 | V | 10V<=VI<=23V, IO=1mA~40mA | 3 |
| Load Regulation | Vo |  | 24 | 80 | mV | Tj=25C, IO=1mA~100mA | 3 |
| Load Regulation | Vo |  | 16 | 40 | mV | Tj=25C, IO=1mA~40mA | 3 |
| Line regulation | Vo |  | 16 | 175 | mV | 10.5V<=VI<=23V, Tj=25C | 3 |
| Line regulation | Vo |  | 8 | 125 | mV | 11V<=VI<=23V, Tj=25C | 3 |
| Quiescent Current | Iq |  | 2 | 5.5 | mA | Tj=25C | 3 |
| Quiescent Current Change | Iq |  |  | 1.5 | mA | 11V<=VI<=23V | 3 |
| Quiescent Current Change | Iq |  |  | 0.1 | mA | 1mA<=IO<=40mA | 3 |
| Output Noise Voltage | VN |  | 60 |  | V | 10Hz<=f<=100kHz, Tj=25C | 3 |
| Temperature coefficient of Vo | Vo/T |  | 0.8 |  | mV/C | Io=5mA | 3 |
| Ripple Rejection | RR | 36 | 45 |  | dB | 12V<=VI<=23V, f=120Hz, Tj=25C | 3 |
| Dropout Voltage | Vd |  |  | 1.7 | V |  | 3 |

## CAD (KiCad official)

- Symbol: `78L08K`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `78l08k-etched.step` / `78l08k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `78l08k.step` / `78l08k.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Shikues datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603322990281314304) (7 pp, sha256 `9ce247ee797b0466`, retrieved 2026-10-17, 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](docs/78l08k-datasheet.pdf)