DT8211

DMB Technology DT8211 LCD Back Light Inverter Drive IC DT8211 LCD Back Light Inverter Drive IC Rev1.1 – 11 July 2008 1. General description 2. Features The DT8211 is a LCD backlight inverter controller for driving CCFL (Cold Cathode Fluorescent Lamp). It drives a half bridge topology symmetrically and provides a near sinusoidal current waveform. It operates at a single-stage topology, constant frequency PWM (Pulse Width Modulation) mode. The MaxDuty technique achieves the maximum duty ratio of about 48% and hence can provide better efficiency. A typical operating frequency ranges from 30kHz to 300kHz, depending on the CCFL and transformer characteristics. Features such as OLP (Open Lamp Protection) and SCP (Short Circuit Protection) functions are included. It is available in 18-pin SOPW. n High Efficiency Single Stage Power Conversion n P- and N-channel MOSFET Driver Included n Wide Input Supply Voltage Range from 7.5V to 45V n Maximum Duty ratio of 48% n Extremely Low Number of External Components n Extremely Small Size of Board n Constant Frequency PWM Operation n High Precision Oscillator n Analog and Burst Dimming Function Simultaneously n Analog Dimming Polarity Selectable n Burst Dimming Polarity Selectable n Open Lamp Protection Circuit Included n Output Short Circuit Protection Circuit Included n 18 Pin SOPW 3. Applications n LCD Backlight Inverter n EEFL Inverter n FFL Inverter n Advertisement Board Rev1.1– 11 July 2008 © 2007 DMB Tech. All Rights Reserved 1...