目录

1.产品概述       2.产品特点     I38嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）I38嘉泰姆

5.产品封装       6.电路原理图  I38嘉泰姆

7.相关产品I38嘉泰姆

   产品概述 返回TOPI38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TOPI38嘉泰姆

• Input Voltage Range: 2.7V to 5.5VI38嘉泰姆
• Drives up to 4 LEDs at 20mA EachI38嘉泰姆
• 16-Step Brightness ControlI38嘉泰姆
• High Efficiency by Fractional Conversion withI38嘉泰姆
    1× and 1.5× ModesI38嘉泰姆
• Automatic Charge Pump Mode SelectionI38嘉泰姆
• Switching Frequency: 1MHzI38嘉泰姆
• 1% Typical LED Current MatchingI38嘉泰姆
• Internal Soft-Start Limits Inrush CurrentI38嘉泰姆
• Low Input Noise and Low EMII38嘉泰姆
• Over-Current and Over-Temperature ProtectionI38嘉泰姆
• Output Over-Voltage ProtectionI38嘉泰姆
• Under-Voltage Lockout with HysteresisI38嘉泰姆
• Available in Green TQFN-3×3-16L PackageI38嘉泰姆

   应用范围 返回TOPI38嘉泰姆

Mobile Phone, DSC, MP3I38嘉泰姆
White LED BacklightingI38嘉泰姆
LCD Display SupplyI38嘉泰姆

   技术规格书（产品PDF) 返回TOP I38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！I38嘉泰姆

 I38嘉泰姆

产品封装图 返回TOPI38嘉泰姆

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电路原理图 返回TOPI38嘉泰姆

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