• [ CXLE87121 ]

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1.产品概述       2.产品特点     ZzM嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）ZzM嘉泰姆

5.产品封装       6.电路原理图  ZzM嘉泰姆

7.相关产品ZzM嘉泰姆

   产品概述 返回TOPZzM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.ZzM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.ZzM嘉泰姆

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

   产品特点 返回TOPZzM嘉泰姆

• Output Current Up to 500mAZzM嘉泰姆
• Up to 90% Efficiency in Torch ModeZzM嘉泰姆
• Adjustable Flash Mode CurrentZzM嘉泰姆
• Automatic Buck/Boost Mode SwitchoverZzM嘉泰姆
• Input Voltage Range: 2.7V to 5.5VZzM嘉泰姆
• Minimum External Components: No InductorsZzM嘉泰姆
• High Frequency Operation: 2.2MHzZzM嘉泰姆
• Low 47mV Reference for Low Loss SensingZzM嘉泰姆
• I_Q < 1μa in shutdownZzM嘉泰姆
< 1μa in shutdownZzM嘉泰姆
• Automatic Soft-Start Limits Inrush CurrentZzM嘉泰姆
• Low Input and Output Ripple and Low EMIZzM嘉泰姆
• Output Over-Voltage ProtectionZzM嘉泰姆
• Over-Current and Over-Temperature ProtectionZzM嘉泰姆
• Available in Green TDFN-3×3-10L PackageZzM嘉泰姆

   应用范围 返回TOPZzM嘉泰姆

White LED Torch, Flash for CellZzM嘉泰姆
Phones, DSCs and CamcordersZzM嘉泰姆
White LED BacklightingZzM嘉泰姆
Generic Lighting, Flash and Strobe ApplicationsZzM嘉泰姆
General Purpose High Current BoostZzM嘉泰姆

   技术规格书（产品PDF) 返回TOP ZzM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！ZzM嘉泰姆

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产品封装图 返回TOPZzM嘉泰姆

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电路原理图 返回TOPZzM嘉泰姆

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