SY8718A1ADC from Silergy Corp, in a TSOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	FB	input	Output current feedback pin. The output current is set by IOUT = 0.1V / RS, where RS is the current-sense resistor between the LED cathode and GND.
2	DIM	input	Dimming signal input. Accepts a PWM signal with duty range 5%-100% and dimming frequency 20kHz to 500kHz. VDIM_ON max = 1.5V, VDIM_OFF min = 0.4V.
3	GND	power_in	Ground pin. Device reference and return path for input decoupling and internal circuitry.
4	IN	power_in	Input supply pin. Operating range 4V to 23V (abs max 25V). Decouple this pin to GND with a 1µF (typ 22µF in the reference application) ceramic capacitor.
5	LX	power_out	Switching node pin. Connect this pin to the external inductor (6.8µH in the typical application). Swing between GND and VIN at 1MHz.
6	BST	power_in	Bootstrap pin. Supplies the high-side gate driver (VBST-LX typ 3V). Decouple this pin to LX with a 0.1µF ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	Silergy Corp
Package	TSOT-23-6
Category	LED-drv
Pins	6

Ordering variants

Same part, different packaging or reel option.

SY8718A1ADC

CAD (KiCad official)

Symbol: SY8718A1ADC
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: TSOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`sy8718a1adc.step`	97 KB	You want the bare part, or you mark your own boards.
`sy8718a1adc-etched.step`	2.0 MB	You want the part with `SY8718A1ADC` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 491 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Silergy Corp datasheet (13 pp, sha256 79210ed2ac02774f, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF