4-string LED Driver with Build-in Boost Regulator 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 ca

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       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.

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

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

Minimum on time: 80ns typicalyff嘉泰姆

Adjustable over voltage protectionyff嘉泰姆

Low Rdson of internal boost switch: 220mohmyff嘉泰姆

PWM dimming control: 0%~100%yff嘉泰姆

Dimming Frequency: 100Hz~30kHzyff嘉泰姆

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

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

Internal softstartyff嘉泰姆

Compact packages: QFN3x3-16yff嘉泰姆

   应用范围 返回TOPyff嘉泰姆

     Monitor Panel Backlightyff嘉泰姆

• TV Panel Backlightyff嘉泰姆

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