OZ9902C View Datasheet(PDF) - O2Micro International
Part Name
Description
MFG CO.
'OZ9902C' PDF : 56 Pages View PDF
OZ9984
FEATURES
• Drives up to 4 LED strings in parallel
• Integrated LED current balance control circuit
• Multi-chip parallel operation
• Analog dimming control
• Over-voltage protection (OVP)
• User-defined LED short circuit protection
• Soft start function
GENERAL DESCRIPTION
OZ9984 is a high efficiency LED driver IC that works in conjunction with a pri-
mary side external Pulse Width Modulation (PWM) controller for offline, isolated
LED lighting application. It has four (4) LED current sense inputs in an “OR”
configuration to ensure uniform lighting of the LEDs. It can drive up to 4 strings
of LEDs in parallel and up to 9 LEDs per string connected in series.
OZ9984 supports up to 350mA of LED current per string. It is designed in such
a way that if any LED string is damaged during normal operation, the remaining
string (s) continue normal operation. Multi-chip parallel operation supports ad-
ditional LED strings.
APPLICATIONS
• LCD TV
• General Lighting
APPLICATION DIAGRAM
U.S. Patent #’s 7,847,783; 8,084,960; and more patents pending.
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