# LM7805AL-TA3-T

**UTC(Unisonic Tech)** · Linear Voltage Regulators (LDO) · TO-220

LM7805AL-TA3-T from UTC(Unisonic Tech), in a TO-220. 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 | I | power_in | Input pin: the datasheet gives an absolute maximum input voltage of 35 V for VOUT=5 to 18 V (40 V for VOUT=24 V). |
| 2 | G | power_in | Ground (GND) pin, the common reference for the regulator; quiescent current IQ is specified at 8.0 mA maximum with TJ=25°C and IOUT≤1.0 A. |
| 3 | O | power_out | Regulated output pin: the fixed output is 5.0 V (typ) for the LM7805A, with output current up to 1.5 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | TO-220 |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 4.8 | 5 | 5.2 | V | TJ =25°C, IOUT=5mA ~ 1.0A | 3 |
| Output Voltage | VOUT | 4.75 |  | 5.25 | V | VIN =7.5V ~ 20V, IOUT=5mA ~ 1.0A, PD≤15W | 3 |
| Dropout Voltage | VD |  |  | 2 | V | TJ =25°C | 3 |
| Load Regulation | VOUT |  |  | 100 | mV | TJ =25°C, IOUT=5mA ~ 1.5A | 3 |
| Load Regulation | VOUT |  |  | 50 | mV | TJ =25°C, IOUT=0.25A ~ 0.75A | 3 |
| Line regulation | VOUT |  |  | 50 | mV | VIN =7V ~ 25V, TJ =25°C | 3 |
| Quiescent Current | IQ |  |  | 8 | mA | TJ =25°C, IOUT≤1.0A | 3 |
| Quiescent Current Change | IQ |  |  | 1 | mA | VIN =7.5V ~ 20V | 3 |
| Quiescent Current Change | IQ |  |  | 0.5 | mA | IOUT=5mA ~ 1.0A | 3 |
| Ripple Rejection | RR | 62 | 80 |  | dB | VIN =8V ~ 18V, f=120Hz, TJ =25°C | 3 |
| Output Noise Voltage | eN |  | 40 |  | μV | 10Hz≤f≤100kHz | 3 |
| Temperature Coefficient of Vo | Vo/T |  | -0.6 |  | mV/°C | IOUT=5mA | 3 |
| Peak Output Current | IPEAK |  | 1.8 |  | A | TJ =25°C | 3 |
| Input voltage | VIN |  |  | 35 | V | VOUT=5~18V | 3 |
| Output Current | IOUT |  |  | 1.5 | A |  | 3 |
| Operating Junction Temperature | TOPR | -20 |  | 125 | °C |  | 3 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 3 |
| Junction to Ambient | θJA |  | 65 |  | °C/W |  | 3 |
| Junction to Case TO-220 | θJC |  | 5 |  | °C/W | TO-220 package | 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 represents pulse test conditio | 7 |

## CAD (KiCad official)

- Symbol: `LM7805AL-TA3-T`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `lm7805al-ta3-t-etched.step` / `lm7805al-ta3-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm7805al-ta3-t.step` / `lm7805al-ta3-t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UTC(Unisonic Tech) datasheet](docs/lm7805al-ta3-t-datasheet.pdf) (9 pp, sha256 `1be0940f7075b22b`, retrieved 2026-10-30, 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/lm7805al-ta3-t-datasheet.pdf)