# LT1931IS5#TRPBF

**Analog Devices** · DC-DC Converters · TSOT-23-5

LT1931IS5#TRPBF from Analog Devices, in a TSOT-23-5. 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 | SW | passive | Switch pin where the inductor/diode connect; keep trace area minimal to reduce EMI (abs max -0.4V to 36V). |
| 2 | GND | power_in | Ground pin, connected directly to the local ground plane. |
| 3 | NFB | input | Negative feedback pin with -1.255V reference; connect the resistive divider tap here, keep trace area minimal, NFB bias current flows out of the pin (abs max -2V). |
| 4 | SHDN | input | Active-low shutdown pin; tie to 2.4V or more to enable the device, ground to turn it off (abs max 16V). |
| 5 | VIN | power_in | Input supply pin that must be locally bypassed; operating up to 16V (minimum operating voltage 2.45V typ, 2.6V max). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | TSOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `LT1931IS5#TRPBF`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-5`
- 3D model: TSOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lt1931is5-trpbf-etched.step` / `lt1931is5-trpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt1931is5-trpbf.step` / `lt1931is5-trpbf.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/8588915252881215489) (12 pp, sha256 `57982b9c86ecf898`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-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/lt1931is5-trpbf-datasheet.pdf)