OZ9902C View Datasheet(PDF) - O2Micro International
Part Name
Description
MFG CO.
'OZ9902C' PDF : 56 Pages View PDF
OZ9965
FEATURES
• Integrated LED controller and two
(2) DC/DC converters
• User-defined operation frequency
• Wide input voltage range
• Thermal protection
• User-defined shutdown delay time
• LED fault status output
LED Controller
• User-defined boost topology or
buck-boost topology
• Current mode control
• Drives up to 4 strings of LEDs
in parallel
• User-defined string selection
• Integrated LED current balance
control circuit
• External PWM dimming control
• LED open string and short circuit
protection
LED Controller (cont.)
• MOSFET over-current protection
• Over load protection
• Output short circuit or open diode
protection
Boost Converter
• Current mode control
• Over-voltage protection
• MOSFET over-current protection
• Over load protection
• Soft start function
General Purpose Converter
• User-defined negative buck-boost
or buck topology
• Voltage mode control
• Over-voltage and over load
protection
• Soft start function
GENERAL DESCRIPTION
The OZ9965 is a wide input range, multi-output, power management control-
ler for small panel LCD applications. It controls the DC/DC power conversion
from a single input supply voltage to provide the power needed to drive an LED
backlight module, source drivers and gate drivers used in a LCD application.
OZ9965 includes a high power LED driver controller, a boost converter, and one
general purpose converter that can be configured into either a buck or negative
buck-boost converter.
APPLICATIONS
APPLICATION DIAGRAM
• Car TV
• GPS
U.S. Patent #7,847,783; and more patents pending.
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