OZ9933 Datasheet PDF – LCDM Full-Bridge Controller

Part Number: OZ9933

Function: LCDM Full-Bridge Controller

Package: 16 PDIP, SOP, Lead-free

Manufacturer: O2MICRO

OZ9933 datasheet


The OZ9933 is a high performance, cost-effective Cold Cathode Fluorescent Lamp (CCFL) controller designed to drive large-size LCD applications using 2. 4, or 6 CCFLs. It supports a full bridge, power conversion

topology, while maintaining high efficiency operation.

This controller converts an unregulated DC voltage into a nearly sinusoidal lamp voltage and current waveforms. It supports full-bridge power conversion topology, while maintaining high efficiency operation. The OZ9933 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.

Application Diagram :



1. Constant operating frequency

2. Drives positive/negative-impedance lamps during ignition

3. High drive current for external MOSFETs

4. User-defi ned ignition time and shutdown delay time

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

6. Open-lamp and over-voltage protection

7. Soft start function


Other data sheets are available within the file: OZ9933GN, 0Z9933, 0Z9933GN

OZ9933 Datasheet PDF

OZ9933 pdf