目录

1.产品概述       2.产品特点     PRn嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）PRn嘉泰姆

5.产品封装       6.电路原理图  PRn嘉泰姆

7.相关产品PRn嘉泰姆

   产品概述 返回TOPPRn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.PRn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.PRn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℃.PRn嘉泰姆

   产品特点 返回TOPPRn嘉泰姆

• Input Voltage Range: 3V to 5VPRn嘉泰姆
• Dual Flash LED OutputsPRn嘉泰姆
• Drive Up to Total 1.5A or 0.75A per ChannelPRn嘉泰姆
• High Efficiency LED Driver (Up to 90%)PRn嘉泰姆
• 2MHz Step-Up ConverterPRn嘉泰姆
• Very Small Inductor: 1.0μHPRn嘉泰姆
• Independent Flash Mode Enable and Movie/TorchPRn嘉泰姆
Mode Enable PinsPRn嘉泰姆
• Flash Mode or Movie/Torch Mode Dimming viaPRn嘉泰姆
PWM ControlPRn嘉泰姆
• 10kHz to 200kHz PWM Dimming FrequencyPRn嘉泰姆
• One Resistor Sets Flash Mode LED CurrentPRn嘉泰姆
• One Resistor Sets Movie/Torch Mode LED CurrentPRn嘉泰姆
• Integrated Thermal Regulation ControlPRn嘉泰姆
• 660ms Flash Timer ControlPRn嘉泰姆
• 330kΩ Pull-Down Resistor on ENM or ENF PinPRn嘉泰姆
• LED Open or Short ProtectionPRn嘉泰姆
• Output Over-Voltage ProtectionPRn嘉泰姆
• Cycle-by-Cycle Inductor Current LimitPRn嘉泰姆
• Less than 1μA Shutdown CurrentPRn嘉泰姆
• Available in Green TDFN-3×2-14L PackagePRn嘉泰姆
• Temperature Range: -40℃ to +85℃PRn嘉泰姆

   应用范围 返回TOPPRn嘉泰姆

Portable EquipmentsPRn嘉泰姆

   技术规格书（产品PDF) 返回TOP PRn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！PRn嘉泰姆

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产品封装图 返回TOPPRn嘉泰姆

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电路原理图 返回TOPPRn嘉泰姆

aPRn嘉泰姆

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