cxle87129 saves the energy storage devices such as inductor and boost capacitor, avoids the impact of switching noise on the system, greatly reduces the PCB space and simplifies the system design.
cxle87129 has excellent load and power adjustment rate and minimal output current error. Cxle87129 can make the current of LED very stable, even on large-area light source, when the power supply and load fluctuation range are large, it can make the brightness of LED uniform, and increase the service life of LED.
in addition to supporting a wide range of power supply voltage, the VCC pin of cxle87129 can be used as an output enabling function, which can cooperate with the digital PWM control circuit to achieve more accurate application of gray-scale current adjustment.

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[ CXLE87129 ]"
目录
7.相关产品
产品概述 返回TOP
CXLE87129是一款线性恒流驱动芯片,内建基准电压源及电流驱动电路。CXLE87129相比于电感升压和电荷泵升压的方案,省去了电感和升压电容等储能器件,避免了开关噪声对系统的影响,同时大大缩小了PCB板空间和简化了系统设计。
CXLE87129具有极好的负载与电源调整率及极小的输出电流误差,CXLE87129能使LED的电流非常稳定,甚至在大面积的光源上,电源及负载波动范围大时都能让LED亮度均匀一致,并增长LED使用寿命。
除了支援宽广电源电压范围外,CXLE87129的VCC脚可以充当输出使能功能使用,可配合数位PWM控制线路,达到更精确的灰度电流调整应用。
产品特点 返回TOP
单通道5mA~90mA线性恒流驱动输出固定电流设计
无需外加电阻设定电流宽电源电压设计
无需另外提供电源电压
电源电压范围1.6V~5.5V,静态电流小于50uA
Vcc脚可做PWM调光使用
高电压应用时芯片可串接使用,负载调整率1%/V
应用范围 返回TOP
手机电话
MP3、MP4播放器
GPS接收机
LED灯
数码相机
PDA、笔记本电脑
手电筒
RGB装饰灯
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
相关芯片选择指南 返回TOP 更多同类产品......
LED驱动 |
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型号 |
输入电压 |
输出电压 |
功率 |
封装 |
说明 |
2.5V~5.5V |
SOP8 |
四路单灯手电筒控制芯片 |
|||
2.5V~5.5V |
SOP8 |
四路单灯手电筒控制芯片 |
|||
1.6V~5.5V |
sot-23 |
线性恒流LED驱动芯片 |
|||
2.5V~5.5V |
SOP8L、ESOP8 |
多功能恒流手电筒控制芯片 |