OZ9902C View Datasheet(PDF) - O2Micro International
Part Name
Description
MFG CO.
'OZ9902C' PDF : 56 Pages View PDF
OZ9961
FEATURES
• High frequency DC/DC power converter controller
• Drives 6 LED strings in parallel
• Integrated LED current balance control circuit
• Up to 2.35MHz switching frequency
• Analog or external PWM or internal LPWM dimming control
• Over-current and over-voltage protection
• Thermal protection
• Open diode and open/short circuit protection
• Soft start function
GENERAL DESCRIPTION
The OZ9961 is a LED controller that drives up to six (6) strings of LEDs in paral-
lel configuration, with multiple LEDs per string connected in series. It provides
six (6) LED current sense inputs in an “OR” configuration to improve backlight
reliability. This allows the backlight to remain functional in the event that any
string (s) is damaged during normal operation.
OZ9961 supports either analog, external Pulse Width Modulation (PWM) or
internal Low frequency PWM (LPWM) dimming control.
APPLICATIONS
APPLICATION DIAGRAM
• LCD Monitor
• GPS
U.S. Patent #’s 7,498,793; 7,847,783; and more patents pending.
15
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