# 78L05ML-T92-B

**UTC(Unisonic Tech)** · Linear Voltage Regulators (LDO) · TO-92-2.54mm

78L05ML-T92-B from UTC(Unisonic Tech), in a TO-92-2.54mm. 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 | OUTPUT | power_out | Regulated output voltage of the 78L05 (5 V fixed), rated for output current up to 200 mA per the datasheet. |
| 2 | GND | power_in | Ground (common) reference pin for the regulator. |
| 3 | INPUT | power_in | Unregulated input voltage to the regulator; absolute maximum input voltage is 30 V for VOUT = 5 to 9 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | TO-92-2.54mm |
| Category | Power Management ICs |
| 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=5~9V) | VIN |  |  | 30 | V | VOUT=5~9V | 3 |
| Output Current | IOUT |  |  | 200 | mA |  | 3 |
| Power Dissipation (TO-92) | PD |  |  | 625 | mW | TO-92 package | 3 |
| Ambient Operating Temperature | TOPR | -40 |  | 85 | °C |  | 3 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 3 |
| Output Voltage | VOUT | 4.8 | 5 | 5.2 | V | TJ=25°C | 3 |
| Output Voltage | VOUT | 4.75 |  | 5.25 | V | 7V≦VIN≦20V, IOUT=1mA ~ 40mA | 3 |
| Load Regulation | VOUT |  | 11 | 60 | mV | TJ=25°C, IOUT=1mA ~ 100mA | 3 |
| Load Regulation | VOUT |  | 5 | 30 | mV | TJ=25°C, IOUT=1mA ~ 40mA | 3 |
| Line Regulation | VOUT |  | 8 | 150 | mV | 7V≦VIN≦20V, TJ=25°C | 3 |
| Line Regulation | VOUT |  | 6 | 100 | mV | 8V≦VIN≦20V, TJ=25°C | 3 |
| Quiescent Current | IQ |  | 2 | 5.5 | mA |  | 3 |
| Quiescent Current Change | IQ |  |  | 1.5 | mA | 8V≦VIN≦20V | 3 |
| Quiescent Current Change | IQ |  |  | 0.1 | mA | 1mA≦VIN≦40mA | 3 |
| Ripple Rejection | RR | 41 | 80 |  | dB | 8V≦VIN≦20V, f=120Hz, TJ=25°C | 3 |
| Dropout Voltage | VD |  |  | 1.7 | V | TJ=25°C | 3 |
| Output Noise Voltage | eN |  | 40 |  | μV | 10Hz≦f≦100kHz | 3 |
| Temperature Coefficient of VOUT | VO/T |  | -0.65 |  | mV/°C | IOUT=5mA | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | Note: 1. The Maximum steady state usable output current are dependent on input voltage, heat sinking, lead length of the package and copper pattern of PCB. The data above represent pulse test conditio | 6 |

## CAD (KiCad official)

- Symbol: `78L05ML-T92-B`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92-2.54mm (KiCad packages3D, STEP)
- 3D model files: `78l05ml-t92-b-etched.step` / `78l05ml-t92-b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `78l05ml-t92-b.step` / `78l05ml-t92-b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UTC(Unisonic Tech) datasheet](docs/78l05ml-t92-b-datasheet.pdf) (8 pp, sha256 `5513659f9acccf61`, retrieved 2026-11-05, tier: manufacturer)
- **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/78l05ml-t92-b-datasheet.pdf)