• [ CXLE87122 ]

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目录

1.产品概述       2.产品特点     693嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）693嘉泰姆

5.产品封装       6.电路原理图  693嘉泰姆

7.相关产品693嘉泰姆

   产品概述 返回TOP693嘉泰姆

The CXLE87122 is a current-regulated charge pump ideal for 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 CXLE87122 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.693嘉泰姆

The CXLE87122 also features a very low shutdowncurrent, an automatic soft-start mode to limit inrush current, as well as over-current, over-voltage and over-temperature thermal shutdown control.693嘉泰姆

A low current-sense reference voltage (47mV) allowsthe use of small 0603 current sensing resistors.693嘉泰姆

The CXLE87122 is available in Green TDFN-3×3-10L package and is specified over an ambient temperature range of -40℃ to +85℃.693嘉泰姆

   产品特点 返回TOP693嘉泰姆

• Output Current Up to 700mA693嘉泰姆
• Up to 90% Efficiency in Torch Mode693嘉泰姆
• Adjustable Flash Mode Current693嘉泰姆
• 1× and 2× Automatic Modes for High Efficiency693嘉泰姆
• Input Voltage Range: 2.7V to 5.5V693嘉泰姆
• Minimum External Components: No Inductors693嘉泰姆
• High Frequency Operation: 2.2MHz693嘉泰姆
• Low 47mV Reference for Low Loss Sensing693嘉泰姆
• I_Q < 1μa in shutdown693嘉泰姆
< 1μa in shutdown693嘉泰姆
• Built-In Soft-Start Limits Inrush Current693嘉泰姆
• Low Input and Output Ripple and Low EMI693嘉泰姆
• Output Over-Voltage Protection693嘉泰姆
• Over-Current and Over-Temperature Protection693嘉泰姆
• Available in Green TDFN-3×3-10L Package693嘉泰姆

   应用范围 返回TOP693嘉泰姆

White LED Torch, Flash for Cell693嘉泰姆
Phones, DSCs and Camcorders693嘉泰姆
White LED Backlighting693嘉泰姆
Generic Lighting, Flash and Strobe Applications693嘉泰姆
General Purpose High Current Boost693嘉泰姆

   技术规格书（产品PDF) 返回TOP 693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！693嘉泰姆

 693嘉泰姆

产品封装图 返回TOP693嘉泰姆

693嘉泰姆

电路原理图 返回TOP693嘉泰姆

693嘉泰姆

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