• [ CXLE87124 ]

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目录

1.产品概述       2.产品特点     sQT嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）sQT嘉泰姆

5.产品封装       6.电路原理图  sQT嘉泰姆

7.相关产品sQT嘉泰姆

   产品概述 返回TOPsQT嘉泰姆

The CXLE87124 is the ideal power solution for high-power flash LEDs used with cell phone camera modules or digital still cameras. It is a highly integrated step-up DC/DC converter with very high switching frequency, fixed at 2MHz, providing a very small total solution for portable photo flash. The CXLE87124 has separate Flash mode and Movie/Torch mode enable pins for maximum flexibility. Flash mode is usually used with 660ms timer control to generate a high intensity flash. The Flash mode and Movie/Torch mode LED current is programmed by external resistors respectively, making the flash LED solution simple to control. If both enable pins are at logic high, the LED current will be programmed by the Movie/Torch mode setting resistor.

The two LED output sinks can be shorted together externally for higher power single flash LEDs, up to 1.5A continuous LED current. Thermal regulation is integrated in Flash mode to limit the IC’s temperature and continuously provide the maximum allowed output current.sQT嘉泰姆

Various protection features are built into the CXLE87124, including cycle-by-cycle input current limit protection, output over-voltage protection, LED fault (open or short) protection and thermal shutdown protection. The leakage current in shutdown is less than 1μA.sQT嘉泰姆

The CXLE87124 is available in Green TDFN-3×2-14L package. It operates over an ambient temperature range of -40℃ to +85℃.sQT嘉泰姆

   产品特点 返回TOPsQT嘉泰姆

• Input Voltage Range: 3V to 5VsQT嘉泰姆
• Dual Flash LED OutputssQT嘉泰姆
• Drive Up to Total 1.5A or 0.75A per ChannelsQT嘉泰姆
• High Efficiency LED Driver (Up to 90%)sQT嘉泰姆
• 2MHz Step-Up ConvertersQT嘉泰姆
• Very Small Inductor: 1.0μHsQT嘉泰姆
• Independent Flash Mode Enable and Movie/TorchsQT嘉泰姆
Mode Enable PinssQT嘉泰姆
• Flash Mode or Movie/Torch Mode Dimming viasQT嘉泰姆
PWM ControlsQT嘉泰姆
• 10kHz to 200kHz PWM Dimming FrequencysQT嘉泰姆
• One Resistor Sets Flash Mode LED CurrentsQT嘉泰姆
• One Resistor Sets Movie/Torch Mode LED CurrentsQT嘉泰姆
• Integrated Thermal Regulation ControlsQT嘉泰姆
• 660ms Flash Timer ControlsQT嘉泰姆
• 330kΩ Pull-Down Resistor on ENM or ENF PinsQT嘉泰姆
• LED Open or Short ProtectionsQT嘉泰姆
• Output Over-Voltage ProtectionsQT嘉泰姆
• Cycle-by-Cycle Inductor Current LimitsQT嘉泰姆
• Less than 1μA Shutdown CurrentsQT嘉泰姆
• Available in Green TDFN-3×2-14L PackagesQT嘉泰姆
• Temperature Range: -40℃ to +85℃sQT嘉泰姆

   应用范围 返回TOPsQT嘉泰姆

Portable EquipmentssQT嘉泰姆

   技术规格书（产品PDF) 返回TOP sQT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！sQT嘉泰姆

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产品封装图 返回TOPsQT嘉泰姆

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电路原理图 返回TOPsQT嘉泰姆

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◀ 上一篇:CXLE87123低的关机电流限制浪涌电流的自动软启动模式以及过电流过电压和过温度热关机控制照相机闪光灯应用提供高亮度LED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

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下一篇▶:CXLE87125双闪光灯LED输出用于手机摄像头模块或数码相机的大功率闪光LED的理想电源解决方案高度集成的升压型DC/DC转换器单独的闪光模式和电影/火炬模式Flash模式和Movie/Torch模式的LED电流分别由外部电阻编程

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