OZ9976 Просмотр технического описания (PDF) - Unspecified

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Компоненты Описание

производитель

OZ9976

OZ9976GN, OZ9976, SOP16 / LCD TV Controller , OZMICRO

Unspecified 

Intelligent Lighting

Mission Statement

Be the leading supplier of highly efficient Intelligent Lighting solutions for power

management of electronic products in the Computer, Consumer, Industrial,

Automotive, and Communications markets worldwide.

Product

O2Micro® offers a family of Intelligent Lighting backlight Cold Cathode Fluorescent

Lamp (CCFL), External Electrode Fluorescent Lamp (EEFL), Flat Fluorescent Lamp

(FFL), and LED controllers ideal for various sizes of Liquid Crystal Display (LCD)

and Power Management Unit (PMU) applications – e.g., Monitors, TVs, Notebooks/

Netbooks, PDVDs, Car TVs, GPS, Digital Photo Frames, PNDs (Personal Navigation

Devices). Solutions are also available for General Lighting and Automotive

applications.

CONSUMER Applications

DIGITAL PHOTO FRAME

OZ9919

FEATURES

• Supports half-bridge or push-pull topology

• 0% to 100% PWM dimming range

• Constant operating frequency

• Drives positive/negative-impedance lamps during ignition

• High drive current for external MOSFETs

• User-defined ignition time and shutdown delay time

• Built-in intelligence for lamp ignition and normal operation of CCFLs

• Open-lamp and over-voltage protection

• Soft-start function

GENERAL DESCRIPTION

OZ9919 is a high performance, cost-effective Cold Cathode Fluorescent Lamp

(CCFL) controller designed to drive large-size LCD monitors using 2 or 4 CCFLs.

This controller converts an unregulated DC voltage into a nearly sinusoidal lamp volt-

age and current waveforms. It supports either half-bridge or push-pull power conver-

sion topology, while maintaining high efficiency operation.

The OZ9919 offers a high level of integration, while maintaining flexibility and high

efficiency operation that reduces external component heating, resulting in higher

reliability and longer CCFL life. The proprietary design technique provides a simple,

low-cost system solution.

APPLICATIONS

• LCD Monitor

APPLICATION DIAGRAM

LED MONITOR & TV

U.S. Patent #’s 6,259,615; 6,396,722; 6,559,606; 6,804,129; 6,809,938; 6,856,519; 6,897,698; 6,900,993; 7,026,860;

7,120,035; 7,151,394; 7,394,209; 7,417,382; 7,515,445; 7,515,446; 7,777,425; and more patents pending.

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