DS3994

Voltage Range on V_CC, SDA, and SCL
Relative to Ground...................................-0.5V to +6.0V
Voltage Range on Leads Other than V_CC,
SDA, and SCL.................................-0.5V to (V_CC + 0.5V),
not to exceed +6.0V
Operating Temperature Range ...........-40°C to +85°C
EEPROM Programming Temperature Range ...0°C to +70°C
Storage Temperature Range ..................-55°C to +125°C
Soldering Temperature.............See J-STD-020 Specification
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The DS3994 is a 4-channel controller for cold-cathode fluorescent lamps (CCFLs) that backlight liquid crystal displays (LCDs) in TV and PC monitor applications. The DS3994's features make it suitable for use in even the largest LCDs, while its low BOM cost makes it ideal for the entire range of LCD TVs and monitors.

The DS3994 can stagger the lamp bursts from each of the four channels. This feature allows scanning backlight schemes for video quality improvement to be implemented using a single CCFL controller IC, making it very simple and inexpensive to provide this enhancement.In addition, staggering the bursts from each channel can be used to minimize current ripple on the display power supply, which is especially important for larger LCDs. The relative stagger between each of the channels is programmable, so this feature can be tailored to the specific application.

The DS3994 uses a push-pull drive architecture but it can also support full and half bridge drive schemes.Contact the factory for more details.