The Silan SD6900 is a non‑isolated LED driver chip with high PFC, precise constant current, and multiple protection functions.
The SD6900 LED driver chip uses a floating‑ground buck architecture to achieve high current accuracy and high input‑output regulation. It operates over a wide AC input range (85 VAC‑265 VAC) and includes built‑in PFC control for PF > 0.9 across the full voltage range.
Key features include low start‑up current, various protection mechanisms (over‑voltage, over‑current, over‑temperature, short‑circuit), and a maximum switching frequency of 120 kHz. The device is supplied in a 6‑lead SOT‑23‑6L package and is intended for applications such as globe lamps and T5/T8 LED fixtures. This manual is written in Chinese.
| Typical VCC | 16 V |
|---|---|
| Maximum switching frequency | 120 kHz |
| Efficiency | >93 % (typical at 18 W) |
| Junction temperature range | -40 °C – 125 °C |
It includes output open‑circuit, output short‑circuit, per‑cycle over‑current, over‑temperature, VCC over‑voltage, and VCC under‑voltage protection.