LX1688 Description
C OM The LX1688 is a fixed frequency, dual current/voltage mode, switching regulator that provides the control function for Cold Cathode Fluorescent Lighting (CCFL). This controller can be used to drive a single lamp, but is specifically designed for multiple lamp LCD panels. The IC can be configured as a master or slave and synchronize up to 12 controllers.
LX1688 Key Features
- Provision to synchronize lamp current & frequency with other controllers
- Dimming with analog or digital (PWM) methods (>20:1)
- Programmable Fixed frequency
- Adjustable Power-up reset
- ENABLE/BRITE Polarity Selection
- Voltage limiting on step-up transformer secondary winding
- Open lamp timeout circuitry
- Switched VDD output (10mA)
- Micro-Amp Sleep Mode
- Operates with 3.3V to 5V Supply