目录
产品概述 返回TOPywU嘉泰姆
The CXLE8178 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. It is optimized for low power keypad and portable backlighting applications.ywU嘉泰姆
ywU嘉泰姆
The CXLE8178 uses an internal resistor to set the bias current for four LEDs, which are matched to ±5%. The CXLE8178's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency.ywU嘉泰姆
ywU嘉泰姆
The CXLE8178 requires only a 50mV dropout voltage at a 30mA load on each output to match the LED brightness.ywU嘉泰姆
ywU嘉泰姆
The CXLE8178 is available in Green SOT-23-6 package. It operates over an ambient temperature range of -40℃</span> to +85℃</span>.ywU嘉泰姆
产品特点 返回TOPywU嘉泰姆
• Support up to 4 LEDs
• Low 50mV Dropout at 30mA
• Less than ±5% LED Current Matching
• Simple LED Brightness Control
• Low Shutdown Current
• 2.5V to 5.5V Supply Voltage Range
• Thermal Shutdown Protection
• Operating Temperature Range: -40℃</span> to +85℃</span>
• Available in Green SOT-23-6 PackageywU嘉泰姆
应用范围 返回TOPywU嘉泰姆
Wireless Handsets
MP3, MP4, and PMP
Cellular Phones
Portable Communication Devices
Digital Cameras, Camcorders
PDAs, Palmtops, and Handy Terminals
LED/Display Back Light Driver
LEDs for Camera Flash
Battery-Powered EquipmentywU嘉泰姆
技术规格书（产品PDF) 返回TOP ywU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</span>！</span>
ywU嘉泰姆
ywU嘉泰姆
产品封装图 返回TOPywU嘉泰姆
ywU嘉泰姆
电路原理图 返回TOPywU嘉泰姆
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ywU嘉泰姆
白光LED驱动器</span>ywU嘉泰姆 |
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