# SY8104ADC

**Silergy Corp** · DC-DC Converters · TSOT-23-6

SY8104ADC from Silergy Corp, in a TSOT-23-6. 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 | FB | input | Feedback pin connected to the center point of the output resistor divider to program Vout = 0.6*(1+R1/R2). |
| 2 | EN | input | Enable control pin that must be pulled high to turn the device on and must not float; the datasheet gives EN falling threshold 0.4V and rising threshold 1.5V. |
| 3 | GND | power_in | Ground pin, to be connected to a maximized PCB copper area for best thermal and noise performance. |
| 4 | IN | power_in | Input supply pin, to be decoupled to the GND pin with at least 1uF ceramic capacitor, with the input range 4.5V to 18V. |
| 5 | LX | output | Inductor pin connected to the switching node of the inductor, with dynamic LX voltage limited to IN+3V to GND-5V for 10ns. |
| 6 | BS | passive | Bootstrap pin supplying the high-side gate driver, to be decoupled to the LX pin with a 0.1uF ceramic capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Silergy Corp |
| Package | TSOT-23-6 |
| Category | Power Management ICs |
| Pins | 6 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | 3) The PCB copper area associated with LX pin must | 8 |

## CAD (KiCad official)

- Symbol: `SY8104ADC`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `sy8104adc-etched.step` / `sy8104adc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sy8104adc.step` / `sy8104adc.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Silergy Corp datasheet](docs/sy8104adc-datasheet.pdf) (10 pp, sha256 `46dbeab9a3b07308`, retrieved 2026-10-27, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/sy8104adc-datasheet.pdf)