The SF6772 design report from Sifirst Technology details a 5 V 1 A power management solution meeting Tier 2 six‑level efficiency, including specifications…
The SF6772 is a power‑management IC with a built‑in 600 V MOSFET in an SOP‑8 package, supporting a wide input range (90‑264 V AC) and delivering up to 6 W output at 5 V 1 A while meeting six‑level Tier 2 efficiency. The document describes its patented Super‑QR/PSR technology, protection features, and application in smartphone chargers.
The report provides a complete design package: input‑output parameters, circuit schematic, PCBA dimensions, performance test tables, a detailed BOM, transformer winding guidelines, PCB layout recommendations, temperature tests, and contact information for Sifirst Technology. This manual is written in Chinese.
| Input voltage range | 90‑264 V 50/60 Hz |
|---|---|
| Output voltage | 5 V 1 A |
| Standby power consumption | <75 mW |
| PCB size | 28 mm × 37 mm |
| Maximum output power | 6 W |
The chip accepts an AC input of 90 V to 264 V at 50 Hz or 60 Hz.
Standby power is less than 75 mW.
The PCB measures 28 mm by 37 mm.
The device includes over‑voltage, under‑voltage, over‑current and clamp protection.