# LT1084CT-5#PBF

**Analog Devices** · Linear Voltage Regulators (LDO) · TO-220-3

LT1084CT-5#PBF from Analog Devices, in a TO-220-3. 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, returned to the negative side of the load for Kelvin sensing; the datasheet notes load regulation is measured at the bottom of the package. |
| 2 | VOUT | power_out | Regulated 5V output; the metal tab is electrically connected to this output, and an output capacitor of 22µF solid tantalum or 150µF aluminum electrolytic is required for stability. |
| 3 | VIN | power_in | Unregulated input supply; the maximum operating input voltage for 5V devices is 20V, with transient inputs up to 30V guaranteed. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | TO-220-3 |
| 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 | VIN |  |  | 30 | V |  | 2 |
| Operating Input Voltage (5V devices) | VIN |  |  | 20 | V | 5V devices | 2 |
| Operating Junction Temperature Range, Control Section (C-Grade) | TJ | 0 |  | 125 | °C | C-Grade control section | 2 |
| Operating Junction Temperature Range, Power Transistor (C-Grade) | TJ | 0 |  | 150 | °C | C-Grade power transistor | 2 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 2 |
| Lead Temperature (Soldering, 10 sec) |  |  |  | 300 | °C | Soldering, 10 sec | 2 |
| Output Voltage | VOUT | 4.9 | 5 | 5.1 | V | 0 ≤ IOUT ≤ IFULL_LOAD, 6.5V ≤ VIN ≤ 20V (Notes 4, 6, 7, 9) | 5 |
| Line Regulation |  |  | 0.5 | 10 | mV | IOUT = 0mA, TJ = 25°C, 6.5V ≤ VIN ≤ 20V (Notes 2, 3) | 5 |
| Load Regulation |  |  | 5 | 20 | mV | VIN = 8V, 0 ≤ IOUT ≤ IFULL_LOAD, TJ = 25°C (Notes 2, 3, 4, 6) | 5 |
| Dropout Voltage |  |  | 1.3 | 1.5 | V | ΔVOUT = 50mV, IOUT = IFULL_LOAD (Notes 5, 6) | 5 |
| Current Limit |  | 5.5 |  | 6.5 | A | VIN = 10V | 5 |
| Quiescent Current | IQ |  | 5 | 10 | mA | VIN ≤ 20V | 6 |
| Thermal Regulation |  |  | 0.003 | 0.015 | %/W | TA = 25°C, 30ms pulse | 6 |
| Ripple Rejection |  | 60 | 68 |  | dB | VIN = 8V (Note 6) | 6 |
| Temperature Stability |  |  |  | 0.5 | % |  | 6 |
| Long Term Stability |  |  | 0.03 | 1 | % | TA = 125°C, 1000 Hrs. | 6 |
| RMS Output Noise (% of VOUT) |  |  | 0.003 |  | % | TA = 25°C, 10Hz ≤ f ≤ 10kHz | 6 |
| Thermal Resistance Junction-to-Case, Control Circuitry | θJC |  | 0.65 |  | °C/W | Control Circuitry (See Applications Information), LT1084 T Package | 6 |
| Thermal Resistance Junction-to-Case, Power Transistor | θJC |  | 2.7 |  | °C/W | Power Transistor, LT1084 T Package | 6 |

## CAD (KiCad official)

- Symbol: `LT1084CT-5#PBF`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220-3 (KiCad packages3D, STEP)
- 3D model files: `lt1084ct-5-pbf-etched.step` / `lt1084ct-5-pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt1084ct-5-pbf.step` / `lt1084ct-5-pbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Analog Devices datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/1083ffe.pdf) (18 pp, sha256 `d5e7714d2887fd47`, 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/lt1084ct-5-pbf-datasheet.pdf)