# BL79L15

**GME(银河微电)** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

BL79L15 from GME(银河微电), 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 pin (labelled G on the SOT-89 drawing), common reference for the negative regulator with CIN 0.33µF and CL 0.1µF returned to it. |
| 2 | IN | power_in | Negative input voltage (labelled I), absolute maximum -35 V, with 0.33µF input capacitor to ground. |
| 3 | OUT | power_out | Regulated negative output (labelled O), -15 V typical (-14.4 to -15.6 V at Tj=25°C), with 0.1µF output capacitor to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GME(银河微电) |
| 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 (Tj=25℃ pair) | VO | -14.4 | -15 | -15.6 | V | Tj=25℃, VIN=-23V, 1.0 mA ≤ IO ≤ 70mA | 8 |
| Output voltage (0-125℃ pair) | VO | -14.25 |  | -15.75 | V | 0℃<Tj<125℃, VIN=-23V, 1.0 mA ≤ IO ≤ 70mA | 8 |
| Load regulation (first value) | ΔVOLOAD |  |  | 150 | mV | Tj=25℃, 1.0 mA ≤ IOUT ≤ 150 mA | 8 |
| Load regulation (second value) | ΔVOLOAD |  |  | 75 | mV | Tj=25℃, 1.0 mA ≤ IOUT ≤ 150 mA | 8 |
| Line regulation (Vi ≤ -17.5 V row) | ΔVOLINE |  | 130 | 300 | mV | Tj=25℃, -30V≤Vi≤-17.5V | 8 |
| Line regulation (Vi ≤ -20 V row) | ΔVOLINE |  | 110 | 250 | mV | Tj=25℃, -30V≤Vi≤-20V | 8 |
| Quiescent current | IQ |  | -2.6 | -4.6 | mA | Tj=25℃ | 8 |
| Quiescent current change (first value) | △IQ |  |  | 1.5 | mA | Tj=25℃, -30V≤Vi≤-20V | 8 |
| Quiescent current change (second value) | △IQ |  |  | 1 | mA | 1.0mA≤IO≤40mA | 8 |
| Voltage drop | VDROP |  | 1.3 |  | V | Tj=25℃ | 8 |
| Output short circuit current | IOS |  | 240 |  | mA | Tj=25℃ | 8 |
| Input voltage | VI | -35 |  |  | V |  | 1 |
| Power dissipation | PD |  |  | 800 | mW | Ta ≤ 25°C; 15 mm × 25 mm × 0.7 mm glass epoxy board | 1 |
| Operating ambient temperature | Topr | 0 |  | 150 | ℃ |  | 1 |
| Junction and storage temperature | Tj,Tstg | -65 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `BL79L15`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `bl79l15-etched.step` / `bl79l15-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl79l15.step` / `bl79l15.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GME(银河微电) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590921486788485120) (10 pp, sha256 `e8e64a5a17827466`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/bl79l15-datasheet.pdf)