# L78L05ACUTR-HXY

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

L78L05ACUTR-HXY from HXY MOSFET, 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 | Output voltage pin of the regulator, which delivers up to 150 mA of output current. |
| 2 | GND | power_in | Ground pin; a common ground is required between the input and output voltages. |
| 3 | VIN | power_in | Input voltage pin; the input must remain typically 2.0 V above the output voltage, even at the low point of the input ripple voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| 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 (Io=40mA, VIN=10V) | Vout | 0.964 |  | 1.036 | x Vout | Io=40mA, VIN=10V | 3 |
| Output Voltage (Io=1mA~40mA, VIN=7V~18V) | Vout | 0.96 |  | 1.04 | x Vout | Io=1mA~40mA, VIN=7V~18V | 3 |
| Output Voltage (Io=1mA~10mA, VIN=10V) | Vout | 0.95 |  | 1.05 | x Vout | Io=1mA~10mA, VIN=10V | 3 |
| Line Regulation (VIN=7V~18V) | LNR | -150 |  | 150 | mV | VIN=7V~18V, Io=20mA | 3 |
| Line Regulation (VIN=8V~18V) | LNR | -100 |  | 100 | mV | VIN=8V~18V, Io=20mA | 3 |
| Load Regulation (Io=1mA~100mA) | LDR | -100 |  | 100 | mV | VIN=10V, Io=1mA~100mA | 3 |
| Load Regulation (Io=1mA~40mA) | LDR | -30 |  | 30 | mV | VIN=10V, Io=1mA~40mA | 3 |
| Quiescent Current | IQ |  |  | 5.5 | mA | VIN=10V, IOUT=40mA | 3 |
| Quiescent Current Change (VIN=8V~18V) | ΔIQ | -1.5 |  | 1.5 | mA | VIN=8V~18V, IO=20mA | 3 |
| Quiescent Current Change (Io=1mA~40mA) | ΔIQ | -0.1 |  | 0.1 | mA | VIN=10V, IOUT=1mA~40mA | 3 |
| MAX. Output current | OUT |  |  | 150 | mA |  | 2 |
| MAX Power | Pmax |  |  | 0.5 | W |  | 2 |
| Junction temperature | Tj | -55 |  | 150 | °C |  | 2 |
| Operation temperature | Topr | -40 |  | 125 | °C |  | 2 |
| Storage temperature | Tstr | -55 |  | 155 | °C |  | 2 |
| Soldering temperature and time |  |  |  | 260 | °C |  | 2 |
| ESD Rating (HBM) | ESD |  |  | 2 | KV | HBM | 2 |

## CAD (KiCad official)

- Symbol: `L78L05ACUTR-HXY`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `l78l05acutr-hxy-etched.step` / `l78l05acutr-hxy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l78l05acutr-hxy.step` / `l78l05acutr-hxy.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604438959233912832) (7 pp, sha256 `0971d786aa8d957d`, 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/l78l05acutr-hxy-datasheet.pdf)