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
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[ CXLE8149 ]
目录
7.相关产品
产品概述 返回TOP
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
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
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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产品封装图 返回TOP
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 ) |
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Applications: Step-up converter to drive white-LED, constant current output, LED backlight |
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Part No. |
Mode |
VIN |
VOUT |
IQ |
FOSC |
Eff. |
FB Voltage |
Package |
Application |
|
PFM |
0.8~9V |
36uA |
300kHz |
82% |
200mV |
SOT89-5 |
Step-up Converter To Drive One Or Two 1W White LEDs |
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PFM |
2~6V |
19V Max |
93μA |
3MHz |
80% |
200mV |
SOT23-6 |
STBA,PHONE,PDA,GPS |
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|
PWM |
2.5~5.5V |
28V Max |
150μA |
1.2MHz |
90% |
250mV |
SOT23-6 |
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PWM |
2~24V |
30V Max |
150μA |
1.2MHz |
96% |
250mV |
SOT23-6 |
机顶盒 |
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PWM |
2.5~5.5V |
30V Max |
150μA |
1.2MHz |
96% |
1.23V |
SOT23-5 |
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