• [ CXLE87121 ]

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目录

1.产品概述       2.产品特点     mIi嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）mIi嘉泰姆

5.产品封装       6.电路原理图  mIi嘉泰姆

7.相关产品mIi嘉泰姆

   产品概述 返回TOPmIi嘉泰姆

The CXLE87121 is a current-regulated charge pump idealfor powering high brightness LEDs for camera flash applications. The charge pump can be set to regulate two current levels for Flash and Torch modes.

The CXLE87121 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. It switches at 2.2MHz, allowing the use of tiny components. The supply voltage ranges from 2.7V to 5.5V and is ideally suited for all applications powered by a single Li-ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells.mIi嘉泰姆

The CXLE87121 also features a very low shutdown current, an automatic soft-start mode to limit inrush current, as well as over-current, over-voltage and over-temperature thermal shutdown control.mIi嘉泰姆

A low current-sense reference voltage (47mV) allows the use of small 0603 current sensing resistors.mIi嘉泰姆

The CXLE87121 is available in Green TDFN-3×3-10L package and is specified over an ambient temperature range of -40℃ to +85℃.mIi嘉泰姆

   产品特点 返回TOPmIi嘉泰姆

• Output Current Up to 500mAmIi嘉泰姆
• Up to 90% Efficiency in Torch ModemIi嘉泰姆
• Adjustable Flash Mode CurrentmIi嘉泰姆
• Automatic Buck/Boost Mode SwitchovermIi嘉泰姆
• Input Voltage Range: 2.7V to 5.5VmIi嘉泰姆
• Minimum External Components: No InductorsmIi嘉泰姆
• High Frequency Operation: 2.2MHzmIi嘉泰姆
• Low 47mV Reference for Low Loss SensingmIi嘉泰姆
• I_Q < 1μa in shutdownmIi嘉泰姆
< 1μa in shutdownmIi嘉泰姆
• Automatic Soft-Start Limits Inrush CurrentmIi嘉泰姆
• Low Input and Output Ripple and Low EMImIi嘉泰姆
• Output Over-Voltage ProtectionmIi嘉泰姆
• Over-Current and Over-Temperature ProtectionmIi嘉泰姆
• Available in Green TDFN-3×3-10L PackagemIi嘉泰姆

   应用范围 返回TOPmIi嘉泰姆

White LED Torch, Flash for CellmIi嘉泰姆
Phones, DSCs and CamcordersmIi嘉泰姆
White LED BacklightingmIi嘉泰姆
Generic Lighting, Flash and Strobe ApplicationsmIi嘉泰姆
General Purpose High Current BoostmIi嘉泰姆

   技术规格书（产品PDF) 返回TOP mIi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！mIi嘉泰姆

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产品封装图 返回TOPmIi嘉泰姆

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电路原理图 返回TOPmIi嘉泰姆

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