# LT1054IDW

**Texas Instruments** · DC-DC Converters · SOIC-16-300mil

LT1054IDW from Texas Instruments, in a SOIC-16-300mil. 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 | NC | unconnected | No internal connection. |
| 2 | NC | unconnected | No internal connection. |
| 3 | FB/SD | input | Shutdown for low Iq operation or error amplifier input for regulation; grounding this terminal shuts the device down, with shutdown supply current typically 100 μA. |
| 4 | CAP+ | input | Positive side of CIN. |
| 5 | GND | power_in | Ground. |
| 6 | CAP- | input | Negative side of CIN. |
| 7 | NC | unconnected | No internal connection. |
| 8 | NC | unconnected | No internal connection. |
| 9 | NC | unconnected | No internal connection. |
| 10 | NC | unconnected | No internal connection. |
| 11 | VOUT | output | Regulated output voltage. |
| 12 | VREF | power_in | Internal reference voltage output. |
| 13 | OSC | input | Oscillator control pin used to adjust the switching frequency or to externally synchronize the device; the internal oscillator runs at a nominal 25 kHz. |
| 14 | VCC | power_in | Supply pin; the recommended supply voltage range is 3.5 V to 15 V. |
| 15 | NC | unconnected | No internal connection. |
| 16 | NC | unconnected | No internal connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Power Management (PMIC) |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `LT1054IDW`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `lt1054idw-etched.step` / `lt1054idw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt1054idw.step` / `lt1054idw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lt1054) (36 pp, sha256 `cb7fc2ff583618ff`, retrieved 2026-10-11, tier: lcsc)
- **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/lt1054idw-datasheet.pdf)