# LT3042EMSE#PBF

**Analog Devices** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · MSOP-10-EP

LT3042EMSE#PBF from Analog Devices, in a MSOP-10-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 supply pin; the absolute maximum IN pin voltage is ±22V and the IN-to-OUT differential is also rated ±22V. |
| 2 | IN | power_in | Second input supply pin, bonded in parallel with pin 1 to the regulator input; the IN pin voltage is rated ±22V absolute maximum. |
| 3 | EN/UV | input | High-accuracy enable and undervoltage lockout pin; its absolute maximum voltage is ±22V and it is rated to ±22V relative to IN. |
| 4 | PG | output | Programmable power-good signal output that indicates the regulated output voltage is in regulation; its absolute maximum pin voltage is -0.3V to 22V. |
| 5 | ILIM | input | Programmable current-limit pin; its absolute maximum voltage range is -0.3V to 1V. |
| 6 | PGFB | input | Power-good feedback pin that monitors the output for the PG comparator; its absolute maximum voltage is -0.3V to 22V. |
| 7 | SET | input | Reference set pin that programs the output voltage with a single resistor; its absolute maximum voltage is -0.3V to 16V and pin current is limited to ±20mA. |
| 8 | GND | power_in | Ground pin for the regulator; it is tied to the exposed pad (pin 11) and should be connected to the PCB ground plane. |
| 9 | OUTS | input | Output sense pin used for remote sensing of the output voltage; its absolute maximum voltage is -0.3V to 16V and pin current is limited to ±20mA. |
| 10 | OUT | power_out | Regulated output pin; its absolute maximum voltage is -0.3V to 16V and the OUT-to-OUTS differential is limited to ±1.2V. |
| 11 | GND | power_in | Exposed pad that is GND and must be soldered to the PCB for thermal and electrical connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-10-EP |
| Category | Power Management (PMIC) |
| Pins | 11 |

## 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 range | VIN | 1.8 |  | 20 | V |  | 1 |
| Output voltage range | VOUT | 0 |  | 15 | V |  | 1 |
| Minimum output capacitor | COUT | 4.7 |  |  | μF | ceramic | 1 |
| Output current | IOUT |  |  | 200 | mA |  | 1 |
| SET pin current initial accuracy | ISET | -1 |  | 1 | % | 100μA SET pin current | 1 |
| Shutdown current |  |  |  | 1 | μA | shutdown mode | 1 |
| Quiescent current |  |  | 2 |  | mA |  | 1 |
| Dropout voltage |  |  | 350 |  | mV | delivering 200mA output | 1 |
| SET pin current | ISET |  | 100 |  | μA |  | 1 |

## CAD (KiCad official)

- Symbol: `LT3042EMSE#PBF`
- Footprint: `Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm`
- 3D model: MSOP-10-EP (KiCad packages3D, STEP)
- 3D model files: `lt3042emse-pbf-etched.step` / `lt3042emse-pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt3042emse-pbf.step` / `lt3042emse-pbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588881830786949120) (28 pp, sha256 `6386f60bcf9a34f1`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/lt3042emse-pbf-datasheet.pdf)