CXLE81109B/C/L

CXLE81109B CXLE81109C CXLE81109L是一个集成的功率LED背光驱动程序,可控制8个LED电流通道,用于笔记本电脑和LCD显示器等LCD背光应用。CXLE81109B/C/L是一个电流模式升压转换器,集成了48V/2.5A电源开关驱动LED阵列。CXLE81109B/C/L的8个电压控制电流通道在1.5%范围内进行电流匹配,补偿了LED堆栈中正向电压变化的不均匀性。为了在典型的多串操作中最小化电压余量和功率损耗,CXLE81109B/C/L监控最高LED正向电压串,并使用其反馈信号进行输出调节。设置引脚用于编程最大LED电流。通过驱动带有PWM信号的PWM管脚,可以实现高对比度的真PWM调光。LED电流与脉宽调制引脚占空比成正比。cxl81109b/C/L具有广泛的保护功能,包括OLP、OCP、OVP和OTP。有TQFN4X4-24和TSSOP-20(FD)包装
·8个通道
·4.2V至24V输入电源
最大输出电压席
·通道全电流可编程,最高可达30毫安
·当前匹配1.5%
·最高Vf串检测调节
·高精度数字调光,采用脉宽调制引脚
·自动连接/断开LED
·1MHz开关频率
·EN、PWM和车辆识别号无电源顺序
保护:打开LED保护(OLP)
过电流保护(OCP)
过电压锁定(OVP)
过热保护(OTP)

通道全电流可编程8通道功率LED背光驱动程序CXLE81109B CXLE81109C CXLE81109L可控制8个LED电流通道电流模式升压转换器集成了48V/2.5A电源开关驱动LED阵列

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1.产品概述       2.产品特点     Y6C嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)Y6C嘉泰姆

5.产品封装       6.电路原理图  Y6C嘉泰姆

7.相关产品Y6C嘉泰姆

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The CXLE81109B CXLE81109C CXLE81109L is an integrated power LED backlight driver that controls 8 channels of LED current for LCD backlight applications such as notebook computer and LCD monitor. The CXLE81109B/C/L is a current mode boost converter integrated with 48V/2.5A power switch drivers the LED array. The CXLE81109B/C/L’s 8 channels of voltage controlled current sinks with current matching within 1.5%, which compensate for the non-uniformity effect of forward voltage variance in the LED stacks. To minimize the voltage headroom and power loss in the typical multi-strings operation, the CXLE81109B/C/L monitors the total highest LED forward voltage string and uses its feedback signal for output regulation. A SET pin is used for programming maximum LED current. A high contrast ratio true PWM dimming can be achieved by driving PWM pin with a PWM signal. LED current is proportional to the PWM pin duty. The CXLE81109B/C/L features extensive protection functions that include OLP, OCP, OVP and OTP. It is available in a TQFN4X4-24 & TSSOP-20 (FD) package.

   产品特点 返回TOPY6C嘉泰姆


„ 8 Channels Y6C嘉泰姆

„ 4.2V to 24V Input Supply Y6C嘉泰姆

„ 48V Maximum Output Voltage Y6C嘉泰姆

„ Channel Full current Programmable up to 30mA Y6C嘉泰姆

„ Current Matching 1.5% Y6C嘉泰姆

„ Highest Vf String Detection for Regulation Y6C嘉泰姆

„ High Accuracy Digital Dimming by PWM Pin Y6C嘉泰姆

„ Automatic Connect/Disconnect LED Y6C嘉泰姆

„ 1MHz Switching Frequency Y6C嘉泰姆

„ Power sequence free for EN,PWM and VIN Y6C嘉泰姆

„ Protections: Š Open LED Protection (OLP) Y6C嘉泰姆

Š Over Current Protection (OCP) Y6C嘉泰姆

Š Over Voltage Lockout (OVP) Y6C嘉泰姆

Š Over Temperature Protection (OTP) Y6C嘉泰姆

„ TQFN4X4-24 & TSSOP-20 (FD) Package Y6C嘉泰姆

„ RoHS CompliantY6C嘉泰姆

   应用范围 返回TOPY6C嘉泰姆


„ Notebook Display LED Backlighting Y6C嘉泰姆

„ LCD Monitor LED Backlighting Y6C嘉泰姆

„ LCD TV LED Backlighting Y6C嘉泰姆

„ Automotive Display BacklightingY6C嘉泰姆

   技术规格书(产品PDF) 返回TOP Y6C嘉泰姆


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电路原理图 返回TOPY6C嘉泰姆


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