# LT3090IMSE#PBF

**Analog Devices** · Linear Voltage Regulators (LDO) · MSOP-12-EP

LT3090IMSE#PBF from Analog Devices, in a MSOP-12-EP. 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 | IN | power_in | Input pin that supplies power to the regulator; all IN pins must be tied together and to the exposed pad, and an input bypass capacitor of 2.2µF to 4.7µF generally suffices. |
| 2 | IN | power_in | Input pin that supplies power to the regulator; all IN pins must be tied together and to the exposed pad, and an input bypass capacitor of 2.2µF to 4.7µF generally suffices. |
| 3 | IN | power_in | Input pin that supplies power to the regulator; all IN pins must be tied together and to the exposed pad, and an input bypass capacitor of 2.2µF to 4.7µF generally suffices. |
| 4 | ILIM | input | Current limit programming pin where an external resistor between ILIM and IN sets the limit with a nominal scale factor of 10A•kΩ, and ILIM must not be driven more than 0.3V below IN. |
| 5 | IMONP | output | Positive current monitor pin that sources current equal to 1/2000 of output current through a resistor to GND, and must be tied to IN for negative current monitoring. |
| 6 | IMONN | output | Negative current monitor pin that sinks current equal to 1/1000 of output current through a resistor to GND, and must be tied to GND if unused. |
| 7 | SHDN | input | Bidirectional shutdown pin where the output is off within ±0.45V of GND and turns on beyond ±1.4V, with maximum pin current of 7µA out or 30µA in, and it must not be floated. |
| 8 | SET | input | Inverting input of the error amplifier where a precision fixed 50µA current flows, and a resistor to GND sets the output voltage from zero to the -36V absolute maximum rating. |
| 9 | GND | power_in | Ground pin that supplies the quiescent current and the drive current to the NPN pass transistor, and must not be driven more than 0.3V below IN. |
| 10 | OUT | power_out | Output pin that supplies power to the load; all OUT pins must be tied together and a minimum 4.7µF output capacitor with ESR below 0.5Ω is required to prevent oscillations. |
| 11 | OUT | power_out | Output pin that supplies power to the load; all OUT pins must be tied together and a minimum 4.7µF output capacitor with ESR below 0.5Ω is required to prevent oscillations. |
| 12 | OUT | power_out | Output pin that supplies power to the load; all OUT pins must be tied together and a minimum 4.7µF output capacitor with ESR below 0.5Ω is required to prevent oscillations. |
| 13 | IN (EXPOSED PAD) | power_in | Exposed backside pad that is electrically connected to IN and the device substrate and must be soldered to the PCB for proper electrical and thermal performance. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-12-EP |
| Category | Power Management ICs |
| Pins | 13 |

## CAD (KiCad official)

- Symbol: `LT3090IMSE#PBF`
- Footprint: `Package_SO:MSOP-12-1EP_3x4.039mm_P0.65mm_EP1.651x2.845mm`
- 3D model: MSOP-12-EP (KiCad packages3D, STEP)
- 3D model files: `lt3090imse-pbf-etched.step` / `lt3090imse-pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt3090imse-pbf.step` / `lt3090imse-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/3090fa.pdf) (36 pp, sha256 `a02e3baeccf7ef6c`, retrieved 2026-11-02, 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/lt3090imse-pbf-datasheet.pdf)