产品概述 返回TOPwtR嘉泰姆

The CXLE81103 step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LED’s brightness. The fast 1.0MHz current-mode PWM control allows for smaller capacitor and inductor. Fault condition protection uses cycle-by-cycle current limiting to sense maximum inductor current, thermal protection and over-voltage protection. Also included soft-start eliminates inrush current during start-up. The 0.2V low reference voltage minimized the power loss across the current-setting resistor. The CXLE81103 is available in SOT-23-6 packages.

   产品特点 返回TOPwtR嘉泰姆

„ Operating Voltage: 2.5V to 5.5V. wtR嘉泰姆

„ High Operating Frequency: 1MHz wtR嘉泰姆

„ High Output Voltage: Up to 40V(Typ.) wtR嘉泰姆

„ Digital Dimming Control. wtR嘉泰姆

„ Built-in Cycle-by Cycle Current-Limiting. wtR嘉泰姆

„ Built-in Soft-Start Function. wtR嘉泰姆

„ 0.2V Low Reference Voltage wtR嘉泰姆

„ Thermal Overload Protection wtR嘉泰姆

„ SOT-23-6 PackagewtR嘉泰姆

   应用范围 返回TOPwtR嘉泰姆

„ GPS Navigation System wtR嘉泰姆

„ Compact Back Light Module wtR嘉泰姆

„ Constant Current Source wtR嘉泰姆

„ LED ModulewtR嘉泰姆

   技术规格书（产品PDF) 返回TOP wtR嘉泰姆

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