Do you like excellent dimmer compatibility by active dimming control? Do you like programmable dimming curve and input current management?
Do you prefer constant LED current regulation in large phase angle range?
The FL7734 is a Primary Side Regulated (PSR), high power factor Constant Current (CC) controller for phase-cut dimmable LED applications for power levels from 5 W to 30 W with lowest component count.
An external high voltage switch is used to control the input current at the right time to ensure highest dimmer compatibility. The constant current tolerance is better than 1% at component level, resulting in a system level constant current tolerance of around 3%.
The controller can detect if a dimmer is not present and works more efficiently under such conditions. Protection features such as LED open / short, sensing resistor shorted, and over-temperature protection enhance system reliability.
The device is available in a 16 pin SOIC package.
Dimming Performance
- Flicker free with active dimmer control
- Compatibility with SSL 7 A and ENERGY STAR
- Controllable minimum input current function
- Dimming curve control with RDIM & CDIM
System Performance
- High PF, low THD: >0.9 / <20%
- Fast < 0.3 s start-up (@ small phase angle)
- Good CC tolerance : <±1% (line regulation)
- Low BOM count: single stage PSR
Protection Features
- LED Short Protection (SCP)
- LED Open Protection (OVP-VS, OVP-VDD)
- Output Diode Short Protection (OCP)
- RCS Short and Open Protections (SRSP, SROP)
- Over Temperature Protection (TSD)
- Residential LED lighting
- Commercial LED lighting
- Industrial LED lighting
Fonte - Fairchild
13 de abril de 2015
