# LM79L15F

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

LM79L15F 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 | GND | power_in | Ground reference pin of the negative regulator. The datasheet gives no separate electrical limit for this pin. |
| 2 | VIN | power_in | Negative input voltage: recommended -17.5 V to -30 V for LM79L15, with an absolute maximum of -35 V for the LM79L12 to LM79L18 group. |
| 3 | VOUT | power_out | Regulated negative output of -15 V nominal (-14.25 V to -15.75 V over 0 to 125 °C), delivering up to 100 mA output current. |

## 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 | VOUT | -14.4 | -15 | -15.6 | V | 25℃, 1mA ≤ Io ≤ 40mA, -17.5V ≤ VIN ≤ -30V | 7 |
| Output Voltage | VOUT | -14.25 | -15 | -15.75 | V | 0℃ ~ 125℃, 1mA ≤ Io ≤ 40mA, -17.5V ≤ VIN ≤ -30V | 7 |
| Line Regulation | ΔVLINE |  | 65 | 300 | mV | -17.5V ≤ VIN ≤ -30V, 25℃ | 7 |
| Line Regulation | ΔVLINE |  | 58 | 250 | mV | -27V ≤ VIN ≤ -30V, 25℃ | 7 |
| Load Regulation | ΔVLOAD |  | 25 | 150 | mV | 1mA ≤ Io ≤ 100mA, 25℃ | 7 |
| Load Regulation | ΔVLOAD |  | 15 | 75 | mV | 1mA ≤ Io ≤ 40mA, 25℃ | 7 |
| Bias Current | IB |  | 4.2 | 6.5 | mA | 25℃ | 7 |
| Bias Current | IB |  |  | 6 | mA | 125℃ | 7 |
| Bias Current Change | ΔIB |  |  | 1.5 | mA | -20V ≤ VIN ≤ -30V, 0℃ ~ 125℃ | 7 |
| Bias Current Change | ΔIB |  |  | 0.1 | mA | 1mA ≤ Io ≤ 40mA | 7 |
| Ripple Rejection | RR | 37 | 44 |  | dB | -18.5V ≤ VIN ≤ -28.5V, f=120Hz, 25℃ | 7 |
| Dropout Voltage | VD |  |  | 1.7 | V | 25℃ | 7 |
| Input Voltage | VIN |  |  | -35 | V | LM79L12 ~ LM79L18 | 1 |
| Lead Temperature (Soldering, 10 sec) | TSOL |  |  | 260 | ℃ | Soldering, 10 sec | 1 |
| Storage Temperature Range | TSTG | -65 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJOPR | 0 |  | 150 | ℃ |  | 1 |
| Input Voltage | VIN | -17.5 |  | -30 | V | LM79L15 | 2 |
| Output Current | Io |  |  | 100 | mA |  | 2 |
| Operating Virtual Junction Temperature | TJ | 0 |  | 125 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `LM79L15F`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `lm79l15f-etched.step` / `lm79l15f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm79l15f.step` / `lm79l15f.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/8588914353537470464) (10 pp, sha256 `0d20c07443475a7e`, 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/lm79l15f-datasheet.pdf)