CXLE8858是一款升压转换器，设计用于从单电池锂离子电池lon batleU+驱动多达7个系列的白色LED。CXLE8858采用电流模式，固定频率结构来调节LED的fxuuuhqw，Zhich是通过一个外部电流感测电阻器来测量的。它的低200毫伏反馈电压降低了功率损耗并提高了效率CXLE8858包括欠压锁定、限流和热过载保护，防止在输出过载的情况下损坏。优化后的工作频率能满足LC滤波器值小、lRZ工作电流要求，效率高。内部软启动功能可减少涌流电流。微型封装类型为节省PCB空间和总BOM coVW提供了最佳解决方案
高效率：高达90%
l 1.2兆赫定频运行
集成内部功率MOSFET
驱动多达7个系列的WLEDs
低200mV反馈电压
宽频率范围软启动/调光
UVLO，热停堆
内部电流限制
过电压保护
小LC滤波器
尽量减少外部组件
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[ CXLE8858 ]
目录
产品概述 返回TOP
The CXLE8858 is a step-up converter designed for driving up to 7 series white LEDs from a single cell Lithium lon batleU The CXLE8858 uses current mode， fixed frequency architecture to regulate an LED FXUUHQW ，Zhich is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency The CXLE8858 includes under-voltage lockout， current limiting and thermal overload protection preventing damage in the event of an output overload. Optimized operation frequency can meet the requirement of small LC filters value and lRZ operation current with high efficiency. Internal soft start function can reduce the inrush currenW. Tiny package type provide the best solution for PCB space saving and total BOM coVW
产品特点 返回TOP
High Efficiency: Up to 90%
1.2MHz Constant Frequency Operation
Integrated internal Power MOSFET
Drives up to 7 Series WLEDs
Low 200mV Feedback Voltage
Soft-start/Dimming with wide Frequency Range
UVLO, Thermal Shutdown
Internal Current limit
Over Voltage Protection
Small LC Filter
Minimize the External Component
<1μA Shutdown Current
SOT23-6 Package
应用范围 返回TOP
Camera Flash White LED
Mobile Phone, Smart Phone LED Backlight
PDA LED Backlight
Digital Still Cameras
Camcorder
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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型号 |
工作电压范围 |
输出电流 |
输出电流精度 |
工作频率 |
调光功能 |
封装 |
|
|
0.9V-6.0V |
1A |
- |
90% |
1.0 MHz |
SOT-26 |
||
|
0.8V-5.5V |
外置MOS/15W |
3% |
90% |
700KHz |
PWM调光500Hz-1KHz |
SOT-26 |
|
|
3V-24V |
内置2A MOS |
2% |
90% |
1.2MHz |
SOT-26 |
||
|
2.7V-6.5V |
内置2.8A MOS |
2% |
90% |
1MHz |
SOT-26 |
||
|
2.5V-30V |
内置3A MOS |
2% |
90% |
460KHz |
模拟调光/PWM调光 |
SOP-8 |
|
|
2.2V-6V |
内置3A MOS |
2% |
90% |
800KHz |
SOP-8 |
||
|
2.2V-6V |
内置3A MOS |
2% |
90% |
800KHz |
DFN3*3-8 |
||
|
10V-35V |
内置3A MOS |
2% |
90% |
800KHz |
SOP-8 |
||
|
4.5V--24V |
1A |
2% |
90% |
800KHz |
ESOP8 |
||
|
3.6V-26V |
2A |
2% |
92% |
400KHz |
SOP-8 |
||
|
3.6V-26V |
2A |
2% |
92% |
400KHz |
SOP-8 |
||
|
5V-45V |
2A |
2% |
93% |
400KHz |
SOP-8 |
||
|
8V-32V |
内置8A MOS |
2% |
92% |
1MHz |
SOP-14 |
||
|
8V-32V |
外置MOS/36W |
2% |
94% |
1MHz |
ESOP-8 |
||
|
3.6V-36V |
4A |
2% |
94% |
180KHz |
TO252-5L |
||
|
5.0V-36V |
5A |
2% |
94% |
180KHz |
TO-263-5L |
||
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