• [ CXLE87124 ]"

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1.产品概述       2.产品特点     jKT嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）jKT嘉泰姆

5.产品封装       6.电路原理图  jKT嘉泰姆

7.相关产品jKT嘉泰姆

   产品概述 返回TOPjKT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.jKT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.jKT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℃.jKT嘉泰姆

   产品特点 返回TOPjKT嘉泰姆

• Input Voltage Range: 3V to 5VjKT嘉泰姆
• Dual Flash LED OutputsjKT嘉泰姆
• Drive Up to Total 1.5A or 0.75A per ChanneljKT嘉泰姆
• High Efficiency LED Driver (Up to 90%)jKT嘉泰姆
• 2MHz Step-Up ConverterjKT嘉泰姆
• Very Small Inductor: 1.0μHjKT嘉泰姆
• Independent Flash Mode Enable and Movie/TorchjKT嘉泰姆
Mode Enable PinsjKT嘉泰姆
• Flash Mode or Movie/Torch Mode Dimming viajKT嘉泰姆
PWM ControljKT嘉泰姆
• 10kHz to 200kHz PWM Dimming FrequencyjKT嘉泰姆
• One Resistor Sets Flash Mode LED CurrentjKT嘉泰姆
• One Resistor Sets Movie/Torch Mode LED CurrentjKT嘉泰姆
• Integrated Thermal Regulation ControljKT嘉泰姆
• 660ms Flash Timer ControljKT嘉泰姆
• 330kΩ Pull-Down Resistor on ENM or ENF PinjKT嘉泰姆
• LED Open or Short ProtectionjKT嘉泰姆
• Output Over-Voltage ProtectionjKT嘉泰姆
• Cycle-by-Cycle Inductor Current LimitjKT嘉泰姆
• Less than 1μA Shutdown CurrentjKT嘉泰姆
• Available in Green TDFN-3×2-14L PackagejKT嘉泰姆
• Temperature Range: -40℃ to +85℃jKT嘉泰姆

   应用范围 返回TOPjKT嘉泰姆

Portable EquipmentsjKT嘉泰姆

   技术规格书（产品PDF) 返回TOP jKT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！jKT嘉泰姆

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产品封装图 返回TOPjKT嘉泰姆

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电路原理图 返回TOPjKT嘉泰姆

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◀ Previous:2.2MHz, allowing the use of tiny components CXLE87123 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage

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Next▶:fixed at 2MHz providing a very small total solution for portable photo flash The CXLE87125 has separate Flash mode and Movie/Torch mode enable pins for maximum flexibility