LT1768 - High Power CCFL Controller for Wide Dimming Range and Maximum Lamp Lifetime

The LT1768 is a current mode PWM controller with a 1.5A MOSFET driver for high power applications. It contains a 350kHz oscillator, 5V reference, and a current sense comparator with a 100mV threshold. It operates from an 8V to 24V input voltage. The LT1768 also has undervoltage lockout, thermal limit, and a shutdown pin that reduces supply current to 65µA. It is available in a small 16-lead SSOP package.

特点
  • Ultrawide Multimode Dimming™ Range
  • Multiple Lamp Capability
  • Programmable PWM Dimming Range and Frequency
  • Precision Maximum and Minimum Lamp Currents Maximize Lamp Lifetime
  • No Lamp Flicker Under All Supply and Load Conditions
  • Open Lamp Detection and Protection
  • 350kHz Switching Frequency
  • 1.5A MOSFET Gate Driver
  • 100mV Current Sense Threshold
  • 5V Reference Voltage Output
  • The 16-Lead SSOP Package
典型应用
LT1768 Typical Application
LT1768 Typical Application
应用
  • Desktop Flat Panel Displays
  • Multiple Lamp Displays
  • Notebook LCD Displays
  • Point of Sale Terminal Displays
封装信息
LT1768 Package Drawing
Order Information 订购型号
器件型号封装温度价格 (以 1 ~ 99 片为批量)价格 (以 1000 片为批量) *
LT1768CGN#PBFSSOP-16C$4.70$4.10
LT1768CGN#TRPBFSSOP-16C$4.16
LT1768IGN#PBFSSOP-16I$5.10$4.50
LT1768IGN#TRPBFSSOP-16I$4.56
演示电路板
器件型号描述价格
DC354ALT1768CGN | High Power Dual CCFL Power Supply with Ultrawide Multimode Dimming Range$175.00
数据表
设计要点
可靠性数据
LT Journal
CAD 符号
相关产品
LT1768 - High Power CCFL Controller for Wide Dimming Range and Maximum Lamp Lifetime
DN264 - High Power Desktop LCD Backlight Controller Supports Wide Dimming Ratios While Maximizing Lamp Lifetime
R324 Reliability Data
May 2001 High Power Desktop CCFL Controller Enables Wide Dimming Ratios while Maximizing Lamp Lifetime
LT1768 Footprints and Symbols