OZ9986SLASH datasheet(30/56 Pages) ETC1

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OZ9986/9986A

FEATURES

•

OZ9986: Boost and Buck converter

•

OZ9986A: Buck converter

• High efficiency DC/DC converter controller for LEDs

• Drives up to 6 strings in parallel; number of LEDs in series limited by

external MOSFET(s) rating

• High efficiency LED current balance function

• User-selectable, phase-shift PWM dimming function with 3, 4, 5 and

6 phases

• PWM dimming control signals synchronized with external signal

• Over-voltage and over-current protection

• Soft start function

GENERAL DESCRIPTION

OZ9986/86A are high efficiency, DC/DC controllers that drive up to six (6) strings

connected in parallel configuration, with multiple LEDs in each string connected

in series. Each is targeted for large-size monitor and TV applications.

Each IC provides six (6) LED current sense inputs in an “OR” configuration to

improve backlight reliability. This allows the backlight to remain functioning in

the event that any string (s) is damaged during normal operation.

OZ9986/86A support internal Pulse Width Modulation (PWM) dimming control,

where the PWM dimming signal is phase-shifted by 60 degrees per channel

when all 6 channels are connected. This proprietary feature significantly en-

hances the system performance.

APPLICATIONS

APPLICATION DIAGRAMS

• LCD Monitor

• LCD TV

U.S. Patent #’s 7,498,793; 7,847,783; 7,919,936; 8,248,439; and more patents pending.

OZ9986/ Datasheet(PDF) 30 Page - List of Unclassifed Manufacturers