LT1768 Datasheet PDF | Linear Technology

Linear Technology LT1768

The LT1768 can detect and protect against lamp failures and overvoltage start-up conditions. It is designed to provide maximum flexibility with a minimum number of external components. The LT1768 is a current mode PWM controller with a 1.5A MOSFET driver for high power applications.

Part No.	LT1768
Datasheet	LT1768 Download
Manufacturer	Linear Technology
Description	High Power CCFL Controller
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FEATURES

s Ultrawide Multimode DimmingTM Range s Multiple Lamp Capability s Programmable PWM Dimming Range and Frequency s Precision Maximum and Minimum Lamp Currents Maximize Lamp Lifetime s No Lamp Flicker Under All Supply and Load Conditions s Open Lamp Detection and Protection s 350kHz Switching Frequency s 1.5A MOSFET Gate Driver s 100mV Current Sense Threshold s 5V Reference Voltage Output s The 16-Lead SSOUP Package APPLICATIO S s Desktop Flat Panel Displays s Multiple Lamp Displays s Notebook LCD Displays s Point of Sale Terminal Displays LT1768 High Power CCFL Controller for Wide Dimming Range and Maximum Lamp Lifetime DESCRIPTIO The LT®1768 is designed to control single or multiple cold cathode fluorescent lamp (CCFL) displays. A unique Multimode Dimming scheme* combines both linear and PWM control functions to maximize lamp life, efficiency, and dimming range. Accurate maximum and minimum lamp currents can be easily set. It contains a 350kHz oscillator, 5V reference, and a current sense comparator with a 100mV threshold.