Power Electronics

LED Driver ICs

Fairchild Semiconductor introduced the FLS0116, FLS3217 and FLS3247 LED drivers with integrated MOSFET and power factor correction (PFC). Designed for low-power LED applications, they include integrated power MOSFETs to minimize board space and overall component count while decreasing design time. Equipped with cycle-by-cycle current limiting and integrated protection features such as over temperature protection (OTP) and under-voltage lockout (UVLO) these devices help to significantly improve LED lamp system reliability.

The FLS0116 utilizes 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 non-isolated DC-DC converter applications. Additionally, the devices regulate accurate output current by using a precise constant-current control (CC) function and increase efficiency for an easier design with linear frequency control.

FLS0116 Features

a. Built-in MOSFET (1A/550V)
b. Built-in HV supplying circuit for self biasing
c. Low operating current of 0.85mAa (typical)
d. Current-sense pin open protection
e. No transformer or electrolytic capacitor required for reduced component counts
f. Digital PFC function (>0.9)
g. Automatic, convertible AC-DC and DC-DC Inputs
h. Analog dimming function
i. Programmable LED current and frequency
FLS3217/FLS3247
a. Built-in MOSFET (FLS3217:1A/700V or FLS3247:4A/700V)
b. Open/short LED protection
c. Low operating current: 5mA (typical)
d. No input electrolytic capacitor required for reduced component counts
e. High PF (>0.9)
f. Low THD (Class C)
g. Tight CC tolerance: <±5% in system

Price: US $ in 1,000 quantity pieces

FLS0116MX: $1.29
FLS3217M: $0.92
FLS3217N: $1.27
FLS3247N: $1.36

Delivery: 8-12 weeks ARO

Fairchild Semiconductor
Part Number: FLS0116

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