OZ9902C View Datasheet(PDF) - O2Micro International
Part Name
Description
MFG CO.
'OZ9902C' PDF : 56 Pages View PDF
OZ9904A
FEATURES
• Drives up to 8 strings of LEDs
• Up to 350mA LED current per string
• Supports two boost converters in parallel
• 180 degree phase-shift between the two drive outputs
• Provides two sets of PWM dimming control
• Built-in 180 degree phase-shift PWM dimming control synchronization
• Supports analog dimming
• Over-voltage and over-current protection
• Supports LED open/short circuit protection
• LED fault status output
GENERAL DESCRIPTION
OZ9904A is a high performance LED driver controller optimized for large screen
LED backlight LCD TV applications.
It provides two high voltage gate drive signals for the boost converters, with
180° phase-shift between the two signals. The IC minimizes input and output
current ripple, and provides a flexible design using only one drive signal for low-
power applications through pin DRVSEL.
OZ9904A supports both internal and external Pulse Width Modulation (PWM)
dimming interfaces for various system configurations.
APPLICATIONS
APPLICATION DIAGRAM
• LCD TV
U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.
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