• [ CXLE8181 ]

样品申请

目录

1.产品概述       2.产品特点     O4i嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）O4i嘉泰姆

5.产品封装       6.电路原理图  O4i嘉泰姆

7.相关产品O4i嘉泰姆

   产品概述 返回TOPO4i嘉泰姆

The CXLE8181 is a high efficiency and cost effective charge pump white LED driver. It supports up to 4 white LEDs and regulates a constant current for uniform intensity. 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.User can easily configure each LED current from 1.25mA to 20mA by a pulse dimming control. The dimming of white LEDs current can be achieved by applying a pulse signal to the EN/SET pin. There are totally 16 steps of current could be set by users. 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 CXLE8181 is available in Green TQFN-3×3-16L package and is specified over an ambient temperature range of -40℃ to +85℃.

   产品特点 返回TOPO4i嘉泰姆

• Input Voltage Range: 2.7V to 5.5VO4i嘉泰姆
• Drives up to 4 LEDs at 20mA EachO4i嘉泰姆
• 16-Step Brightness ControlO4i嘉泰姆
• High Efficiency by Fractional Conversion withO4i嘉泰姆
    1× and 1.5× ModesO4i嘉泰姆
• Automatic Charge Pump Mode SelectionO4i嘉泰姆
• Switching Frequency: 1MHzO4i嘉泰姆
• 1% Typical LED Current MatchingO4i嘉泰姆
• Internal Soft-Start Limits Inrush CurrentO4i嘉泰姆
• Low Input Noise and Low EMIO4i嘉泰姆
• Over-Current and Over-Temperature ProtectionO4i嘉泰姆
• Output Over-Voltage ProtectionO4i嘉泰姆
• Under-Voltage Lockout with HysteresisO4i嘉泰姆
• Available in Green TQFN-3×3-16L PackageO4i嘉泰姆

   应用范围 返回TOPO4i嘉泰姆

Mobile Phone, DSC, MP3O4i嘉泰姆
White LED BacklightingO4i嘉泰姆
LCD Display SupplyO4i嘉泰姆

   技术规格书（产品PDF) 返回TOP O4i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！O4i嘉泰姆

 O4i嘉泰姆

产品封装图 返回TOPO4i嘉泰姆

O4i嘉泰姆

电路原理图 返回TOPO4i嘉泰姆

 O4i嘉泰姆

相关芯片选择指南 返回TOP                               更多同类产品......

◀ 上一篇:CXLE8180单线接口以16个连续步骤编程输出电流4通道超低功耗恒流源并行LED驱动器20毫安负载35毫伏的电压降

返回顶部

下一篇▶:每20毫安驱动6个LED通道电流源和自动模式选择电荷泵高性能白光LED驱动器低漏失电流源CXLE8182单线接口16步亮度控制内部软启动限制浪涌电流低输入纹波和低EMI

共有条评论 用户名: 密码: 验证码: 匿名发表