Low-power LED drivers reduce board space, design time

Low-power LED drivers reduce board space, design time

The FLS0116, FLS3217, and FLS3247 LED drivers with integrated MOSFET and power factor correction are optimally designed for low-power LED applications — further minimizing board space and overall component count while decreasing design time. Equipped with cycle-by-cycle current limiting and integrated protection features such as overtemperature protection and undervoltage lockout these devices help to significantly improve LED lamp system reliability.

The FLS0116 uses an “adopted digital” technique that automatically detects ac and dc input voltage conditions, enabling and disabling PFC functions while also offering programmable oscillation frequency and analog dimming and soft-start functions. The FLS3217 and FLS3247 with primary-side regulation (PSR) can support isolated flyback converter and nonisolated dc/dc converter applications.

The FLS0116 offers an operating current of 0.85 mA typ, while the FL3217/FLS3247 offer an operating current of 5 mA typ. Additionally, the devices regulate accurate output current by using a precise constant-current control function and increase efficiency for an easier design with linear frequency control. (Ea/1,000: FLS0116MX, $1.29; FLS3217M, $0.92; FLS3217N, $1.27; FLS3247N, $1.36 — prod qty, 8 to 12 weeks ARO.)

By Christina Nickolas

Fairchild Semiconductor , San Jose , CA , United States
Information 408-822-2000
www.fairchildsemi.com