# GBI1400TKBR

**GOSEMICON** · DC-DC Converters · TSOT-23-6L

GBI1400TKBR from GOSEMICON, in a TSOT-23-6L. 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 | BOOT | input | Power supply for the high-side power MOSFET gate driver; a 0.1uF or greater ceramic capacitor must be connected between the BOOT pin and the SW node. |
| 2 | GND | power_in | Power ground; the GND pin should be connected directly to the thermal pad beside the IC with an 8mil max thermal via recommended. |
| 3 | FB | input | Buck converter output feedback sensing input; a resistor divider from VOUT to FB sets the output, and the device regulates FB to the internal 0.8V reference typically (FB absolute maximum is 6V). |
| 4 | EN | input | Enable logic input that supports high voltage up to VIN, with precision thresholds of 1.25V rising and 1.1V falling for programmable UVLO; this pin cannot be floating. |
| 5 | VIN | power_in | Power supply input with an operating range of 4.6V to 40V that must be locally bypassed. |
| 6 | SW | output | Switching node of the buck converter; SW to GND is rated -1V to 45V absolute maximum (SW to GND, less than 30ns transients: -2V to 45V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GOSEMICON |
| Package | TSOT-23-6L |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `GBI1400TKBR`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6L (KiCad packages3D, STEP)
- 3D model files: `gbi1400tkbr-etched.step` / `gbi1400tkbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gbi1400tkbr.step` / `gbi1400tkbr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GOSEMICON datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8759877809601036288) (17 pp, sha256 `5c7ff60e03ef91a3`, retrieved 2026-10-09, 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/gbi1400tkbr-datasheet.pdf)