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首页 > Products > Led Driver > Boost and Buck Linear CC LED driver > Medium and Low Voltage CC Buck >Cxle8683 is a CMOS step-down constant current driver composed of reference voltage source, oscillation circuit, comparator, PWM / PFM control circuit
Cxle8683 is a CMOS step-down constant current driver composed of reference voltage source, oscillation circuit, comparator, PWM / PFM control circuit

Cxle8683 is a CMOS step-down constant current driver composed of reference voltage source, oscillation circuit, comparator, PWM / PFM control circuit, etc. Using PWM / PFM automatic switching control circuit to achieve adjustable duty cycle, with low ripple, high efficiency and large output in the full input voltage range (2.0-6v)
Current and other characteristics. Cxle8683 has built-in power MOSFET, which uses over-voltage, over-current, overheat and many other protection circuits. When the control value is exceeded, it will automatically disconnect to protect the chip. This product combines the characteristics of micro package and low current consumption, and is most suitable for internal use of power supply of mobile devices

Cxle8683 is a CMOS step-down constant current driver composed of reference voltage source, oscillation circuit, comparator, PWM / PFM control circuit
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一,产品概述(General Description)         nOE嘉泰姆


          CXLE8683是一款由基准电压源、振荡电路、比较器、PWM/PFM 控制电路等构成的CMOS降压恒流驱动器。利用PWM/PFM自动切换控制电路达到可调占空比,具有全输入电压范围(2.0-6V)内的低纹波、高效率和大输出电流等特点。CXLE8683内置功率MOSFET,使用过压、过流、过热等诸多保护电路,在超过控制值时会自动断开,以保护芯片。本产品结合了微型封装和低消耗电流等特点,最适合在移动设备的电源内部使用。nOE嘉泰姆
二.产品特点(Features)
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高效率: 最大效率可达92% nOE嘉泰姆
大的输出电流: 800mA nOE嘉泰姆
甚小静态电流: 200μA nOE嘉泰姆
低压操作: 可达100%占空比 nOE嘉泰姆
PWM/PFM自动切换,占空比自动可调以保持很大负载范围内的高效率、低纹波 nOE嘉泰姆
工作电压=2.0-6.0V nOE嘉泰姆
输出电流=800mA nOE嘉泰姆
控制模式=PWM / PFM nOE嘉泰姆
单串LED数量=1 nOE嘉泰姆
封装形式:SOT-23-5L nOE嘉泰姆
三,应用范围 (Applications)
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LED驱动nOE嘉泰姆
四.下载产品资料PDF文档 
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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!nOE嘉泰姆

 QQ截图20160419174301.jpgnOE嘉泰姆

五,产品封装图 (Package)nOE嘉泰姆


image.pngnOE嘉泰姆

六.电路原理图nOE嘉泰姆


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七,功能概述nOE嘉泰姆

项目nOE嘉泰姆

符号nOE嘉泰姆

条件nOE嘉泰姆

最小值nOE嘉泰姆

典型值nOE嘉泰姆

最大值nOE嘉泰姆

FB 控制电压nOE嘉泰姆

VFBnOE嘉泰姆

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0.09nOE嘉泰姆

0.1nOE嘉泰姆

0.11nOE嘉泰姆

工作电压nOE嘉泰姆

VINnOE嘉泰姆

 

2nOE嘉泰姆

-nOE嘉泰姆

6nOE嘉泰姆

线性调整度nOE嘉泰姆

△VOUTnOE嘉泰姆

IL=300mAnOE嘉泰姆

 

0.45nOE嘉泰姆

 

效率nOE嘉泰姆

EFFInOE嘉泰姆

IL=200mAnOE嘉泰姆

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92nOE嘉泰姆

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CE 最低开启nOE嘉泰姆

VCELnOE嘉泰姆

-nOE嘉泰姆

0.9nOE嘉泰姆

   

CE 最高关断nOE嘉泰姆

VCEHnOE嘉泰姆

-nOE嘉泰姆

   

1.1nOE嘉泰姆

待机电流nOE嘉泰姆

ISTBnOE嘉泰姆

VCE=0V、VIN=5VnOE嘉泰姆

0nOE嘉泰姆

-nOE嘉泰姆

1nOE嘉泰姆

静态电流nOE嘉泰姆

IDDnOE嘉泰姆

VFB=0.1V*0.9nOE嘉泰姆

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200nOE嘉泰姆

-nOE嘉泰姆

电流限制nOE嘉泰姆

ILIMnOE嘉泰姆

-nOE嘉泰姆

-nOE嘉泰姆

1200nOE嘉泰姆

-nOE嘉泰姆

PFM 切换点nOE嘉泰姆

ILnOE嘉泰姆

   

100nOE嘉泰姆

 

振荡频率nOE嘉泰姆

FOSCnOE嘉泰姆

 

-nOE嘉泰姆

1.4nOE嘉泰姆

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最大占空比nOE嘉泰姆

MAXDTYnOE嘉泰姆

-nOE嘉泰姆

100nOE嘉泰姆

-nOE嘉泰姆

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八,相关产品nOE嘉泰姆


产品名称nOE嘉泰姆

工作电压(V)nOE嘉泰姆

输出电流(mA)nOE嘉泰姆

控制模式nOE嘉泰姆

单串LED数量nOE嘉泰姆

封装形式nOE嘉泰姆

CXLE8683nOE嘉泰姆

2.0-6.0nOE嘉泰姆

800nOE嘉泰姆

PWM/PFMnOE嘉泰姆

1nOE嘉泰姆

SOT-23-5nOE嘉泰姆

CXLE8684nOE嘉泰姆

3.6-6.0nOE嘉泰姆

300nOE嘉泰姆

PWMnOE嘉泰姆

7nOE嘉泰姆

SOT-23-6nOE嘉泰姆

CXLE8685nOE嘉泰姆

2.6-6.0nOE嘉泰姆

300nOE嘉泰姆

PWMnOE嘉泰姆

6nOE嘉泰姆

SOT-23-6nOE嘉泰姆

CXLE8686nOE嘉泰姆

2.5-6.0nOE嘉泰姆

300nOE嘉泰姆

PWMnOE嘉泰姆

4nOE嘉泰姆

SOT-23-6nOE嘉泰姆

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