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首页 > 产品中心 > LED驱动电路 > LED背光 > 电荷泵型LED背光 >CXLE8184高性能的6个白色LED并调节恒定电流驱动程序电流源和自动模式选择电荷泵PWM调光来调节LED的亮度低输入纹波和低EMI过流和过温保护带滞后的欠压锁定
CXLE8184高性能的6个白色LED并调节恒定电流驱动程序电流源和自动模式选择电荷泵PWM调光来调节LED的亮度低输入纹波和低EMI过流和过温保护带滞后的欠压锁定
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CXLE8184是一款高性能的白色LED驱动程序。它集成了电流源和自动模式选择电荷泵。该部分采用1×/1.5×分数电荷泵和低漏电流源,保持了高效率。小等效1×模开环电阻和极低的电流源压降,延长了1×模工作时间,优化了锂离子电池在白光LED应用中的效率。
CXLE8184支持多达6个白色LED并调节恒定电流,初始值可由内部电阻器设置。该部分采用PWM调光来调节LED的亮度。用户可以通过数字PWM信号轻松配置从0mA到27mA的LED电流。CXLE8184可通过EN引脚关闭。工作电压范围为2.7V~5.5V,内部软启动电路有效地降低了启动和模式转换时的涌入电流。
•输入电压范围:2.7V至5.5V
•驱动高达6个LED,每个27毫安
•脉宽调制调光
•通过分数转换实现高效
1×和1.5×模式
•开关频率:0.93MHz
•调节输出电流,匹配度为±4.8%
•内部软启动限制浪涌电流
•低输入纹波和低EMI
•过流和过温保护
•带滞后的欠压锁定

CXLE8184高性能的6个白色LED并调节恒定电流驱动程序电流源和自动模式选择电荷泵PWM调光来调节LED的亮度低输入纹波和低EMI过流和过温保护带滞后的欠压锁定
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1.产品概述       2.产品特点     Yt4嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)Yt4嘉泰姆

5.产品封装       6.电路原理图  Yt4嘉泰姆

7.相关产品Yt4嘉泰姆

   产品概述 返回TOPYt4嘉泰姆


The CXLE8184 is a high performance white LED driver. It integrates current sources and automatic mode selection charge pump. The part maintains the high efficiency by utilizing a 1×/1.5× fractional charge pump and low dropout current sources. The small equivalent 1× mode open loop resistance and ultra-low dropout voltage of current source extend the operating time of 1× mode and optimize the efficiency of Li-ion battery in white LED applications.The CXLE8184 supports up to 6 white LEDs and regulates a constant current which the initial value can be set by an internal resistor. The part implements PWM dimming to adjust the brightness of LED. Users can easily configure the LED current from 0mA to 27mA by a digital PWM signal. CXLE8184 can be turned off by EN pin. The operating voltage range is 2.7V to 5.5V. Internal soft-start circuitry effectively reduces the in-rush current while both start-up and mode transition.The CXLE8184 is available in Green TQFN-3×3-16L package and is rated over the -40°C to +85°C temperature range.

   产品特点 返回TOPYt4嘉泰姆


• Input Voltage Range: 2.7V to 5.5VYt4嘉泰姆
• Drives up to 6 LEDs at 27mA EachYt4嘉泰姆
• PWM DimmingYt4嘉泰姆
• High Efficiency by Fractional Conversion withYt4嘉泰姆
    1× and 1.5× ModesYt4嘉泰姆
• Switching Frequency: 0.93MHzYt4嘉泰姆
• Regulated Output Current with ±4.8% MatchingYt4嘉泰姆
• Internal Soft-Start Limits Inrush CurrentYt4嘉泰姆
• Low Input Ripple and Low EMIYt4嘉泰姆
• Over-Current and Over-Temperature ProtectionYt4嘉泰姆
• Under-Voltage Lockout with HysteresisYt4嘉泰姆
• Available in Green TQFN-3×3-16L PackageYt4嘉泰姆

   应用范围 返回TOPYt4嘉泰姆


Mobile Phone, DSC, MP3Yt4嘉泰姆
White LED BacklightingYt4嘉泰姆
LCD Display SupplyYt4嘉泰姆

   技术规格书(产品PDF) 返回TOP Yt4嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持Yt4嘉泰姆

 QQ截图20160419174301.jpgYt4嘉泰姆

产品封装图 返回TOPYt4嘉泰姆


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电路原理图 返回TOPYt4嘉泰姆


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