component
SY5861BFAC
Public Unreviewedby Ray
Silergy Corp LED Drivers, SO-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSY5861BFAC
Silergy Corp · LED Drivers · SO-8
SY5861BFAC from Silergy Corp, in a SO-8. 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 | LEDN | input | Cathode of the LED string. Sinks the LED current and is regulated to filter low-frequency ripple. Rated -0.3V to 100V absolute maximum. |
| 2 | VIN | power_in | Power supply pin. Connect via a 10 kΩ resistor to the anode of the LED string. Turn-on threshold ~10V (typ), turn-off ~7.8V (typ), operating current ~77 µA typ. Rated -0.3V to 100V absolute maximum; recommended 20V-100V. |
| 3 | NC | unconnected | No connect. Leave floating or tie according to layout preference. |
| 4 | AVG | passive | Average current filter pin. Bypass with a 100 nF capacitor to GND to set the internal average current reference for ripple filtering. |
| 5 | GND | power_in | Ground pin. Pins 5/6/7/8 are all GND and should be tied together to the ground plane for return current and thermal dissipation. |
| 6 | GND | power_in | Ground pin. Pins 5/6/7/8 are all GND and should be tied together to the ground plane for return current and thermal dissipation. |
| 7 | GND | power_in | Ground pin. Pins 5/6/7/8 are all GND and should be tied together to the ground plane for return current and thermal dissipation. |
| 8 | GND | power_in | Ground pin. Pins 5/6/7/8 are all GND and should be tied together to the ground plane for return current and thermal dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silergy Corp |
| Package | SO-8 |
| Category | LED-drv |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
SY5861BFAC
CAD (KiCad official)
- Symbol:
SY5861BFAC - Footprint:
Package_SO:TI_SO-PowerPAD-8 - 3D model: SO-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silergy Corp datasheet (5 pp, sha256
20f1758f84d76dcf, retrieved 2026-08-17, tier: manufacturer) - 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).