• [ CXLE8191 ]"

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1.产品概述       2.产品特点     mYa嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）mYa嘉泰姆

5.产品封装       6.电路原理图  mYa嘉泰姆

7.相关产品mYa嘉泰姆

   产品概述 返回TOPmYa嘉泰姆

The CXLE8191 is a versatile constant current LED driver with a high efficiency step-up converter architecture. The low-side power MOSFET is integrated in the device, significantly shrinking the overall PCB layout area and minimizing the total number of external components. Unique technology and high 1.35A current limit allow CXLE8191 to drive up to 38V output (10 LEDs in series). Alternatively, CXLE8191 can deliver 260mA total current with 3 series LEDs per string. It can also maximize the current capability while achieving high conversion efficiency. The optimized 1MHz switching frequency results in reduced conduction loss and small external component size. Digital PWM dimming interface is integrated to adjust LED current. The PWM frequency is in the range from 2kHz to 60kHz.Various protection features are built into the CXLE8191, including cycle-by-cycle input current limit protection, open LED (output over-voltage) protection and thermal shutdown protection. The leakage current in shutdown mode is less than 1μA.The CXLE8191 is available in Green TSOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.

   产品特点 返回TOPmYa嘉泰姆

• Wide Output Range: Up to 10 Series LEDsmYa嘉泰姆
• Integrated 40V High Current Switch (1.35A Limit)mYa嘉泰姆
• 2.7V to 5.5V Input Voltage RangemYa嘉泰姆
• High Efficiency PWM ConvertermYa嘉泰姆
• Low 200mV Feedback VoltagemYa嘉泰姆
• 500kΩ Pull-Low Resistor on CTRL PinmYa嘉泰姆
• 2kHz to 60kHz PWM Dimming FrequencymYa嘉泰姆
• 38V Open LED ProtectionmYa嘉泰姆
• 1MHz Switching FrequencymYa嘉泰姆
• Integrated Soft-Start FunctionmYa嘉泰姆
• Less than 1μA Shutdown CurrentmYa嘉泰姆
• Simple, Small Solution SizemYa嘉泰姆
• Available in Green TSOT-23-6 PackagemYa嘉泰姆
• -40℃ to +85℃ Temperature RangemYa嘉泰姆

   应用范围 返回TOPmYa嘉泰姆

LED BacklightingmYa嘉泰姆
Mobile PhonesmYa嘉泰姆
Handheld DevicesmYa嘉泰姆
Digital Photo FramesmYa嘉泰姆
Automotive NavigationmYa嘉泰姆

   技术规格书（产品PDF) 返回TOP mYa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！mYa嘉泰姆

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产品封装图 返回TOPmYa嘉泰姆

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电路原理图 返回TOPmYa嘉泰姆

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◀ Previous:CXLE8190 is a step-up DC/DC converter designed for driving the white LEDs with an externally programmable constant current. This device features integrated, 38V power MOSFET that is capable of drivin

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Next▶:CXLE8192 The default white LED current is set with the external sensor resistor RSET, and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, the LED