8-Channels LED Driver CXLE81109B/C/L 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

发布时间:2020-04-06 09:43:38 浏览次数:710 作者:嘉泰姆
摘要:8-Channels LED Driver CXLE81109B/C/L 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

目录

1.产品概述       2.产品特点     UdY嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)</span>UdY嘉泰姆

5.产品封装       6.电路原理图</strong>  UdY嘉泰姆

7.相关产品UdY嘉泰姆

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The CXLE81109B/C/L 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.

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„ 8 Channels UdY嘉泰姆

„ 4.2V to 24V Input Supply UdY嘉泰姆

„ 48V Maximum Output Voltage UdY嘉泰姆

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

„ Current Matching 1.5% UdY嘉泰姆

„ Highest Vf String Detection for Regulation UdY嘉泰姆

„ High Accuracy Digital Dimming by PWM Pin UdY嘉泰姆

„ Automatic Connect/Disconnect LED UdY嘉泰姆

„ 1MHz Switching Frequency UdY嘉泰姆

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

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

Š Over Current Protection (OCP) UdY嘉泰姆

Š Over Voltage Lockout (OVP) UdY嘉泰姆

Š Over Temperature Protection (OTP) UdY嘉泰姆

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

„ RoHS CompliantUdY嘉泰姆

   应用范围 返回TOPUdY嘉泰姆


„ Notebook Display LED Backlighting UdY嘉泰姆

„ LCD Monitor LED Backlighting UdY嘉泰姆

„ LCD TV LED Backlighting UdY嘉泰姆

„ Automotive Display BacklightingUdY嘉泰姆

   技术规格书(产品PDF) 返回TOP UdY嘉泰姆


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电路原理图&nbsp;返回TOPUdY嘉泰姆

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