# GBI1600TKBR

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

GBI1600TKBR 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 | Bootstrap supply for the high-side MOSFET gate driver, which requires a 0.1uF or greater ceramic capacitor between BOOT and SW and a BOOT-to-SW voltage above 2.6V for full-duty operation. |
| 2 | GND | power_in | Power ground for the device, which should be tied to the system ground plane at a single point as the layout guideline recommends. |
| 3 | FB | input | Buck converter feedback sensing input, connected to a resistor divider from VOUT, which the device regulates to the internal 0.770V reference typically (750mV to 790mV). |
| 4 | EN | input | High-voltage enable input that can be floated to enable the device or tied to VIN for automatic start-up, with precision thresholds of 1.21V rising and 1.07V falling and a maximum voltage of 60V. |
| 5 | VIN | power_in | Power supply input for the regulator, which must be locally bypassed and operates over 4V to 60V. |
| 6 | SW | output | Switching node of the buck converter, rated -0.6V to 65V to GND (-4V to 65V for transients of 20ns or less). |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage protection / ABS: VIN, EN to GND | VIN, EN to GND | -0.3 |  | 65 | V |  | 3 |
| FB to GND | FB to GND | -0.3 |  | 6.5 | V |  | 3 |
| SW to GND | SW to GND | -0.6 |  | 65 | V |  | 3 |
| SW to GND (≤20ns transients) | SW to GND | -4 |  | 65 | V | ≤20ns transients | 3 |
| BOOT to SW | BOOT to SW | -0.3 |  | 6.5 | V |  | 3 |
| Junction temperature | TJ | -40 |  | 150 | °C |  | 3 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| VIN Supply voltage range | VIN | 4 |  | 60 | V |  | 3 |
| Output Current | Io | 0 |  | 1 | A |  | 3 |
| EN pin voltage | VEN | 0 |  | 60 | V |  | 3 |
| Switching frequency range | fSW | 510 |  | 690 | kHz |  | 3 |
| Operating junction temperature | TJ | -40 |  | 125 | °C |  | 3 |
| Operating input voltage | VVIN | 4 |  | 60 | V |  | 4 |
| Input UVLO, VIN rising | VIN_UVLO | 3.75 | 3.9 |  | V | VIN rising | 4 |
| Shutdown current | ISHDN |  | 1 | 8 | uA | EN=0, No load, 4V≤VVIN≤60V | 4 |
| Quiescent current | IQ |  | 80 | 109 | uA | EN=floating, No load, No switch, 4V≤VVIN≤60V, BOOT-SW=5V | 4 |
| Enable high threshold | VEN_H | 1.18 | 1.21 | 1.24 | V |  | 4 |
| Feedback Voltage | VFB | 750 | 770 | 790 | mV |  | 4 |
| High side FET on-resistance | RDSON_H | 360 | 542 | 950 | mΩ |  | 4 |
| Switching frequency | fSW | 510 | 600 | 690 | KHz |  | 4 |
| Enable low threshold | VEN_L |  | 1.07 |  | V |  | 4 |
| Input UVLO hysteresis | VIN_UVLO hysteresis |  | 220 |  | mV |  | 4 |
| Minimum on-time | tON_MIN |  | 80 |  | ns |  | 4 |
| Internal soft-start time | tSS |  | 5 |  | ms |  | 4 |
| HSD peak current limit | ILIM_HSD |  | 1.5 |  | A | VVIN=12V | 4 |
| Thermal shutdown threshold | TSD |  | 160 |  | °C |  | 4 |
| Thermal shutdown hysteresis | TSD hysteresis |  | 30 |  | °C |  | 4 |
| Output over voltage protection rising | VOVP_H |  | 109 |  | % |  | 5 |
| Output over voltage protection falling | VOVP_L |  | 105 |  | % |  | 5 |
| Junction to ambient thermal resistance, TSOT23-6L | RθJA |  | 102 |  | °C/W |  | 4 |
| Junction to case (top) thermal resistance, TSOT23-6L | RθJC_top |  | 37 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `GBI1600TKBR`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6L (KiCad packages3D, STEP)
- 3D model files: `gbi1600tkbr-etched.step` / `gbi1600tkbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gbi1600tkbr.step` / `gbi1600tkbr.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/8756313145864667136) (19 pp, sha256 `3c48a9227ddae0ee`, retrieved 2026-10-18, 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/gbi1600tkbr-datasheet.pdf)