OZ9902C View Datasheet(PDF) - O2Micro International
Part Name
Description
MFG CO.
'OZ9902C' PDF : 56 Pages View PDF
OZ9908A
FEATURES
• Drives up to 6 strings of LEDs
• Up to 350mA LED current per string
• Multiple IC parallel operation with power train sharing
• Primary side regulation application
• Analog dimming control
• Individual PWM dimming for every 3 strings
• Over-voltage and over-current protection
• LED open/short circuit protection
• LED fault status output
GENERAL DESCRIPTION
The OZ9908A is a high performance LED driver controller optimized for large
screen LED backlight LCD TV applications. It provides an integrated six-channel
LED current regulation control circuit. Using external balance transistors for
each channel, the IC is capable of driving a current up to 350mA per LED
channel.
OZ9908A provides two external Pulse Width Modulation (PWM) dimming inter-
faces for the six LED strings. Each PWM signal controls the brightness of three
LED strings. This feature is suitable for LCD TV applications using a scanning
backlight or 3-dimensional display mode functions.
APPLICATIONS
• LCD TV
APPLICATION DIAGRAM
U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.
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