# LM78L05F

**HTC Korea TAEJIN Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

LM78L05F from HTC Korea TAEJIN 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 | VOUT | power_out | Regulated output voltage, fixed at 5 V for the LM78L05, supplying up to 100 mA of output current. |
| 2 | GND | power_in | Ground reference pin for the regulator, shared between input and output return. |
| 3 | VIN | power_in | Unregulated input voltage, with absolute maximum ratings of 30 V for LM78L05 to LM78L10, 35 V for LM78L12 to LM78L18, and 40 V for LM78L24. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN 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 tolerance (blank suffix, no A) |  | -4 |  | 4 | % | Tolerance code blank (LM78L05F, no A suffix) = 4% | 3 |
| Input Voltage | VIN |  |  | 30 | V | LM78L05 ~ LM78L10 | 1 |
| Lead Temperature (Soldering, 10 sec) | TSOL |  |  | 260 | ℃ | Soldering, 10 sec | 1 |
| Storage Temperature Range | TSTG | -65 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJOPR | -40 |  | 150 | ℃ |  | 1 |
| Input Voltage | VIN | 7 |  | 20 | V | LM78L05 / A | 2 |
| Output Current | Io | 100 |  | 100 | mA |  | 2 |
| Operating Virtual Junction Temperature | TJ | -40 |  | 125 | ℃ |  | 2 |
| Output Voltage | VOUT | 4.8 | 5 | 5.2 | V | 25℃, 1mA ≤ Io ≤ 40mA, 7V ≤ VIN ≤ 20V | 5 |
| Output Voltage | VOUT | 4.75 | 5 | 5.25 | V | -30℃ ~ 125℃, 1mA ≤ Io ≤ 70mA, 7V ≤ VIN ≤ 20V | 5 |
| Line Regulation | ΔVLINE |  | 32 | 150 | mV | 7V ≤ VIN ≤ 20V | 5 |
| Line Regulation | ΔVLINE |  | 26 | 100 | mV | 8V ≤ VIN ≤ 20V, 25℃ | 5 |
| Load Regulation | ΔVLOAD |  | 15 | 60 | mV | 1mA ≤ Io ≤ 100mA | 5 |
| Load Regulation | ΔVLOAD |  | 8 | 30 | mV | 1mA ≤ Io ≤ 40mA, 25℃ | 5 |
| Bias Current | IB |  | 3.8 | 6 | mA | 25℃ | 5 |
| Bias Current | IB |  |  | 5.5 | mA | 125℃ | 5 |
| Bias Current Change | ΔIB |  |  | 1.5 | mA | 9V ≤ VIN ≤ 20V | 5 |
| Bias Current Change | ΔIB |  |  | 0.1 | mA | 1mA ≤ Io ≤ 40mA, -30℃ ~ 125℃ | 5 |
| Ripple Rejection | RR | 41 | 49 |  | dB | 8V ≤ VIN ≤ 18V, f=120Hz, 25℃ | 5 |

## CAD (KiCad official)

- Symbol: `LM78L05F`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `lm78l05f-etched.step` / `lm78l05f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm78l05f.step` / `lm78l05f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HTC Korea TAEJIN Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586183372082696192) (11 pp, sha256 `b5b1ed6d19d1619d`, retrieved 2026-10-18, 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/lm78l05f-datasheet.pdf)