PWM Dimming, 38V Step-Up LED Driver CXLE8187 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,

   产品概述 返回TOPGQB嘉泰姆

The CXLE8187 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 1.6A current limit allow CXLE8187 to drive up to 38V output (10 LEDs in series). Alternatively, CXLE8187 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 600kHz 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.GQB嘉泰姆

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Various protection features are built into the CXLE8187, 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.GQB嘉泰姆

The CXLE8187 is available in Green TSOT-23-6 package. It operates over an ambient temperature range of -40℃</span> to +85℃</span>.GQB嘉泰姆

   产品特点 返回TOPGQB嘉泰姆

• Wide Output Range: Up to 10 Series LEDs
• Integrated 40V High Current Switch (1.6A Limit)
• 2.7V to 5.5V Input Voltage Range
• High Efficiency PWM Converter
• Low 300mV Feedback Voltage
• 500kΩ Pull-Low Resistor on CTRL Pin
• 2kHz to 60kHz PWM Dimming Frequency
• 38V Open LED Protection
• 600kHz Switching Frequency
• Integrated Soft-Start Function
• Less than 1μA Shutdown Current
• Simple, Small Solution Size
• -40℃</span> to +85℃</span> Temperature Range
• Available in Green TSOT-23-6 PackageGQB嘉泰姆

   应用范围 返回TOPGQB嘉泰姆

LED Backlighting
Mobile Phones
Handheld Devices
Digital Photo Frames
Automotive NavigationGQB嘉泰姆

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