产品概述 返回TOPcaf嘉泰姆

       CXLE81117 develops a high efficiency boost regulator with four matching current source to drive up to four strings of white LEDs in the backlight applications of LCD panels.
The device operates over a wide input voltage range of 4V to 24V. CXLE81117 has adjustable switching frequency from 300kHz to 2MHz. The LED current can be programmed from 10mA to 40mA. CXLE81117 also integrates PWM dimming function for accurate LED current control.
The CXLE81117 is available in QFN3x3-16 package.

   产品特点 返回TOPcaf嘉泰姆

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Programmable switching frequency to achieve best efficiency and EMI performancecaf嘉泰姆

Drive up to 4 strings of LEDs with up to 12 LED per stringcaf嘉泰姆

Minimum on time: 80ns typicalcaf嘉泰姆

Adjustable over voltage protectioncaf嘉泰姆

Low Rdson of internal boost switch: 220mohmcaf嘉泰姆

PWM dimming control: 0%~100%caf嘉泰姆

Dimming Frequency: 100Hz~30kHzcaf嘉泰姆

+/-2% current matching among strings guaranteed for above 10% dimming levelcaf嘉泰姆

Programmable LED current: up to 40mA per string. +/-3% accuracycaf嘉泰姆

Internal softstartcaf嘉泰姆

Compact packages: QFN3x3-16caf嘉泰姆

   应用范围 返回TOPcaf嘉泰姆

     Monitor Panel Backlightcaf嘉泰姆

• TV Panel Backlightcaf嘉泰姆

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