Intelligent Lighting

O₂Micro offers a family of Intelligent Lighting products (OZ960/OZ961/OZ963/OZ965/OZ969A/OZ970/OZ971) that are unique, high efficiency, CCFL backlight inverter controllers. They will enhance designs for new, single-stage, next-generation inverter modules that drive a CCFL backlight. All Inverter ICs implement O₂Micro's patented single-stage inverter architecture, which improves the lamp's light output by 10% to 25% per watt of input power.

Additionally, all inverters employ O₂Micro's patented pulse-width-modulation (PWM) output drive architecture with Zero Voltage Switching (ZVS) technology. The ZVS technique enables the design of efficient, low-loss CCFL inverter circuits.

Each device converts a DC source to a high-voltage, high frequency quasi-sine wave required to ignite and operate a CCFL, and are ideal for driving various sizes of LCD backlight lamps, currently being designed into next generation LCD displays, which include monitors, televisions, notebooks and GPS applications.

FEATURES (OZ960/OZ961/OZ970/OZ971)

• Supports wide-range voltage input applications
• Built-in intelligence to manage ignition and normal operation of CCFLs
• 85% efficiency vs. typical 70% efficiency of conventional designs
• Internal open-lamp and over-voltage protections
• OZ960/961: Integrated burst mode control, and wide dimming range (10% to 100%)
• Simple and reliable 2-winding transformer design
• Supports multiple CCFL lamps
• Constant-frequency design eliminates interference with LCDs
• Low stand-by power
• Packages available:
  • OZ960: 20 SSOP and 20 DIP
  • OZ961: 20 SSOP
  • OZ970: 16 SOP
  • OZ971: 28 SSOP

FEATURES (OZ963)

• Supports single LiIon battery operation from 2.5V to 5.0V
• Supports both floating and grounded secondary designs
• Eliminates leakage current when used in a floating secondary design
• 90% efficiency vs. typical 70% efficiency of conventional designs
• Regulated striking voltage, internal open-lamp and over voltage protections
• Integrated burst mode control and wide dimming range
• Simple and reliable 2-winding transformer design
• Constant-frequency design eliminates interference with LCDs
• Low stand-by power
• 20 SSOP package

FEATURES (OZ965)

• Single-stage power conversion requiring only a 5V voltage source
• Supports both floating and grounded secondary designs
• Eliminates leakage current when used in a floating secondary design
• 90% efficiency vs. typical 75% efficiency of conventional designs
• Internal open-lamp and short-circuit protection
• Wide dimming range
• Reliable 2-winding transformer design eliminates arcing problems
• Supports synchronization among multiple inverter modules
• Supports a constant frequency, symmetrical, sinusoidal drive
• Supports multiple CCFLs
• Constant-frequency design eliminates interference with LCDs
• Specified over both commercial and industrial temperature ranges
• 16 SOP and TSSOP packages

FEATURES (OZ969A)

• Supports SMBus protocol dimming control
• Supports wide-range voltage input applications 9v to 21v
• SMBus, version 1.1, compliant
• Built-in intelligence to manage ignition and normal operation of CCFLs
• 85% efficiency vs. typical 70% efficiency of conventional designs
• Internal open-lamp and over-voltage protections
• Integrated burst mode control, and wide dimming range (0% to 100%)
• Supports multiple CCFL lamps
• Constant-frequency design eliminates interference with LCDs
• Low stand-by power
• 20 SSOP package

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