CXLE8149 CXLE8150升压型转换器LED背光照明驱动电路单电池锂离子电池驱动高达7系列的白色LED低250毫伏反馈电压降低了功率损耗提高了效率1.6A开关电流限制

CXLE8149 CXLE8150是一个升压转换器，设计用于从单电池锂离子电池驱动高达7系列的白色LED。它的低250毫伏反馈电压降低了功率损耗，提高了效率。优化后的工作频率能满足LC滤波器值小、工作电流小、效率高的要求。内部软启动功能可降低励磁涌流。微型封装类型为节省PCB空间和总BOM成本提供了最佳解决方案。
2.5V至5.5V输入电压
高达8系列WLED的驱动程序
低250毫伏反馈电压
1.2兆赫固定开关频率
内部1.6A开关电流限制
内部补偿
热关机
过电压保护
宽频率范围调光

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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      CXLE8149 CXLE8150 is a step-up converter designed for driving up to 7 series white LED's from a single cell Lithium Ion battery. Its low 250mV feedback voltage reduces power loss and improves efficiency. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Internal soft start function can reduce the inrush current. Tiny package type provides the best solution for PCB space saving and total BOM cost. CXLE8149 CXLE8150 is available in SOT23-6 package that is PB free.

   产品特点 返回TOP

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 2.5V to 5.5V Input Voltage 

 Drivers up to 8 Series WLEDs 

 Low 250mV Feedback Voltage 

 1.2MHz Fixed Switching Frequency 

 Internal 1.6A Switch Current Limit 

 Internal Compensation 

 Thermal Shutdown 

 Over Voltage Protection 

 Dimming with wide Frequency Range 

 Available in SOT23-6 Package

   应用范围 返回TOP

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 Camera Flash White LED 

 PDA LED back light 

 Digital still cameras

   技术规格书（产品PDF) 返回TOP 

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     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！

 

产品封装图 返回TOP

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电路原理图 返回TOP

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升压型LED背光/照明驱动电路(Step-up   White LED Driver )
Applications:   Step-up converter to drive white-LED, constant current output, LED backlight
Part No.	Mode	VIN	VOUT	IQ	FOSC	Eff.	FB Voltage	Package	Application
CXLE8147	PFM	0.8~9V		36uA	300kHz	82%	200mV	SOT89-5	Step-up Converter To Drive One  Or Two 1W White LEDs
CXLE8148	PFM	2~6V	19V Max	93μA	3MHz	80%	200mV	SOT23-6	STBA,PHONE,PDA,GPS
CXLE8149	PWM	2.5~5.5V	28V Max	150μA	1.2MHz	90%	250mV	SOT23-6
CXLE81119	PWM	2~24V	30V Max	150μA	1.2MHz	96%	250mV	SOT23-6	机顶盒
CXLE8150	PWM	2.5~5.5V	30V Max	150μA	1.2MHz	96%	1.23V	SOT23-5