OZ9936 operates at a constant operating frequency that eliminates any undesired interference between the controller and LCD panel. OZ9936 drives all types of CCFLs and is able to ignite positive impedance CCFLs.
OZ9936 provides a shutdown delay feature for input brownout condition. The control logic provides a regulated ignition voltage and appropriate protection for over voltage or over-current conditions.
O2micro/142222-DI1.gif" data-cke-saved-src="//www.datasheetbank.com/detail-image1/O2micro/142222-DI1.gif">GENERAL DESCRIPTION The OZ9939 is a high performance, cost-effective CCFL (Cold Cathode Fluorescent Lamp) controller designed for driving large-size Liquid Crystal Display (LCD) applications requiring 2 to 6 CCFLs.
FEATURES • Negative PWM dimming polarity • Constant operating frequency • Drives positive/negative-impedance lamps during ignition • High drive current for external MOSFETs • User-defined ignition time and shutdown delay time • Multiple mode dimming control • Built-in intelligence for ignition and normal operation of CCFLs • Built-in open-lamp protection and over voltage protection for backlight system • Optimized soft-start function
O2micros OZ998 Multi-DIMM Selector supports the switching between a primary SMBus and 3 other secondary SMBus. This function is particularly useful for DIMM devices and the support of Intel’s PAS (Preboot Authentication Service).
The ta9687 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.
Overview The LV23200T is a one-Chip tuner IC incorporating PLL for home stereo system.
Features • Tuner IC and PLL IC integrated into one Chip. • MPX-VCO incorporated and without need of adjustment. • FM/AM output level independent setting possible. • MOS transistor for active LPF incorporated.
Functions • AM tuner Changeover of the constant in RFAMP, MIX, OSC, IF AMP, DET, AGC, SD, OSC BUFF, IF BUFF, and AGC modes. • FM tuner 1stIFAMP, IF limiter AMP, DET (COIL type) , S-METER, SD, AFC, IF BUFF. • MPX PLL STEREO DECODER, forced MONO, AUDIO MUTE, function to prevent interference from a neighboring station, PILOT canceling function. • PLL frequency synthesizer.