# LT1019ACS8-2.5#PBF

**Analog Devices** · Voltage References · SOIC-8

LT1019ACS8-2.5#PBF from Analog Devices, in a SOIC-8. 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 | DNC | unconnected | Internally connected; do not connect externally. |
| 2 | INPUT | power_in | Input supply voltage, absolute maximum 40V, with minimum input/output differential of about 0.9V to 1.1V at IOUT ≤ 1mA. |
| 3 | TEMP | output | Temperature output voltage proportional to absolute temperature (about 2.1mV/°C, roughly 620mV at room temperature), with absolute maximum pin voltage of 5V. |
| 4 | GND | power_in | Ground connection of the reference. |
| 5 | TRIM | passive | Output voltage trim pin, absolute maximum ±30V, used with a potentiometer from output to ground (trim range e.g. +6%/-6% for LT1019-2.5). |
| 6 | OUTPUT | power_out | Reference output that can source and sink up to 10mA; LT1019-2.5 output absolute maximum is 7V. |
| 7 | DNC | unconnected | Internally connected; do not connect externally. |
| 8 | DNC | unconnected | Internally connected; do not connect externally. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-8 |
| Category | Power Management ICs |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Load Regulation (Series mode) | ∆VOUT |  | 0.02 | 0.05 | mV/mA (Ω) | Series mode, 0 ≤ IOUT ≤ 10mA (Note 5) | 4 |
| Load Regulation (Series mode, full temperature range) |  |  |  | 0.08 | mV/mA (Ω) | Series mode, ● full operating temperature range (Notes 4, 5) | 4 |
| Load Regulation (Shunt mode) |  |  | 0.1 | 0.4 | mV/mA (Ω) | Shunt mode, 1mA ≤ ISHUNT ≤ 10mA (Notes 5, 6); 2.5V, 4.5V, 5V; ● full operating temperature range | 4 |
| Output Voltage Tolerance |  |  | 0.02 | 0.05 | % |  | 3 |
| TC Output Voltage (LT1019C range) | TC |  | 3 | 5 | ppm/°C | LT1019C (0°C to 70°C); ● full temperature range; Note 3 | 3 |
| Line Regulation | ∆VOUT |  | 0.5 | 3 | ppm/V | (VOUT + 1.5V) ≤ VIN ≤ 40V (Note 4) | 3 |
| Line Regulation (full temperature range) | ∆VIN |  | 1 | 5 | ppm/V | ● full operating temperature range | 3 |
| Ripple Rejection | RR | 90 | 110 |  | dB | 50Hz ≤ f ≤ 400Hz | 3 |
| Ripple Rejection (full temperature range) | RR | 84 |  |  | dB | ● full operating temperature range | 3 |
| Thermal Regulation |  |  | 0.1 | 0.5 | ppm/mW | ∆P = 200mW, t = 50ms | 4 |
| Quiescent Current | IQ |  | 0.65 | 1 | mA |  | 4 |
| Quiescent Current (Series mode) | IQ |  |  | 1.3 | mA | Series mode, ● full operating temperature range | 4 |
| Minimum Shunt Current |  |  | 0.5 | 0.8 | mA | ● full operating temperature range; Note 8 | 4 |
| Minimum Input/Output Voltage Differential |  |  | 0.9 | 1.1 | V | IOUT ≤ 1mA; ● full operating temperature range | 4 |
| Minimum Input/Output Voltage Differential (10mA) |  |  |  | 1.3 | V | IOUT = 10mA; ● full operating temperature range | 4 |
| Trim Range (LT1019-2.5) |  | -6 | 3.5 | 6 | % | LT1019-2.5 | 4 |
| Short-Circuit Current | ISC | 15 | 25 | 50 | mA | 2V ≤ VIN ≤ 35V | 4 |
| Short-Circuit Current (output connected to GND) | ISC | 10 |  |  | mA | Output connected to GND; ● full operating temperature range | 4 |
| Output Voltage Noise | en |  | 2.5 | 4 | ppm (RMS) | 10Hz ≤ f ≤ 1kHz (Note 10) | 4 |
| Output Voltage Noise (0.1Hz to 10Hz) | en |  | 2.5 |  | ppm (P-P) | 0.1Hz ≤ f ≤ 10Hz (Note 10) | 4 |
| Input Voltage |  |  |  | 40 | V |  | 2 |
| Output Voltage (LT1019-2.5) |  |  |  | 7 | V | LT1019-2.5 (Note 2) | 2 |
| Output Short-Circuit Duration |  |  |  | 10 | sec | 20V ≤ VIN ≤ 35V (Note 2) | 2 |
| Trim Pin Voltage |  | -30 |  | 30 | V |  | 2 |
| Temp Pin Voltage |  |  |  | 5 | V |  | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C | Note 11 | 2 |
| Lead Temperature (Soldering) |  |  |  | 300 | °C | Soldering, 10 sec | 2 |
| Specified Temperature Range (Commercial) |  | 0 |  | 70 | °C | Commercial grade | 2 |

## CAD (KiCad official)

- Symbol: `LT1019ACS8-2.5#PBF`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lt1019acs8-2-5-pbf-etched.step` / `lt1019acs8-2-5-pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt1019acs8-2-5-pbf.step` / `lt1019acs8-2-5-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/1019fd.pdf) (12 pp, sha256 `ae02b48310f3b609`, retrieved 2026-10-28, 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/lt1019acs8-2-5-pbf-datasheet.pdf)