• [ CXLE87121 ]

样品申请

目录

1.产品概述       2.产品特点     ZfH嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）ZfH嘉泰姆

5.产品封装       6.电路原理图  ZfH嘉泰姆

7.相关产品ZfH嘉泰姆

   产品概述 返回TOPZfH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.ZfH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.ZfH嘉泰姆

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

   产品特点 返回TOPZfH嘉泰姆

• Output Current Up to 500mAZfH嘉泰姆
• Up to 90% Efficiency in Torch ModeZfH嘉泰姆
• Adjustable Flash Mode CurrentZfH嘉泰姆
• Automatic Buck/Boost Mode SwitchoverZfH嘉泰姆
• Input Voltage Range: 2.7V to 5.5VZfH嘉泰姆
• Minimum External Components: No InductorsZfH嘉泰姆
• High Frequency Operation: 2.2MHzZfH嘉泰姆
• Low 47mV Reference for Low Loss SensingZfH嘉泰姆
• I_Q < 1μa in shutdownZfH嘉泰姆
< 1μa in shutdownZfH嘉泰姆
• Automatic Soft-Start Limits Inrush CurrentZfH嘉泰姆
• Low Input and Output Ripple and Low EMIZfH嘉泰姆
• Output Over-Voltage ProtectionZfH嘉泰姆
• Over-Current and Over-Temperature ProtectionZfH嘉泰姆
• Available in Green TDFN-3×3-10L PackageZfH嘉泰姆

   应用范围 返回TOPZfH嘉泰姆

White LED Torch, Flash for CellZfH嘉泰姆
Phones, DSCs and CamcordersZfH嘉泰姆
White LED BacklightingZfH嘉泰姆
Generic Lighting, Flash and Strobe ApplicationsZfH嘉泰姆
General Purpose High Current BoostZfH嘉泰姆

   技术规格书（产品PDF) 返回TOP ZfH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！ZfH嘉泰姆

 ZfH嘉泰姆

产品封装图 返回TOPZfH嘉泰姆

ZfH嘉泰姆

电路原理图 返回TOPZfH嘉泰姆

ZfH嘉泰姆

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

◀ 上一篇:CXLE87120电流调节电荷泵为照相机闪光灯应用中的高亮度LED供电自动在升压和降压之间切换模式确保LED电流不依赖于正向电压自动软启动限制涌入电流低输入和输出纹波和低EM

返回顶部

下一篇▶:CXLE87122可调闪光模式电流1×和2×自动模式效率高电流调节电荷泵照相机闪光灯应用中的高亮度LED供电充电泵可设置为调节闪光灯和手电筒模式的两个电流水平由一个锂离子电池或三到四个镍镉镍氢或碱性电池供电应用

共有条评论 用户名: 密码: 验证码: 匿名发表