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
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[ CXLE8683 ]"
一,产品概述(General Description) 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。 高效率: 最大效率可达92% LED驱动 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!
五,产品封装图 (Package)
六.电路原理图 |
七,功能概述
项目 |
符号 |
条件 |
最小值 |
典型值 |
最大值 |
FB 控制电压 |
VFB |
- |
0.09 |
0.1 |
0.11 |
工作电压 |
VIN |
2 |
- |
6 |
|
线性调整度 |
△VOUT |
IL=300mA |
0.45 |
||
效率 |
EFFI |
IL=200mA |
- |
92 |
- |
CE 最低开启 |
VCEL |
- |
0.9 |
||
CE 最高关断 |
VCEH |
- |
1.1 |
||
待机电流 |
ISTB |
VCE=0V、VIN=5V |
0 |
- |
1 |
静态电流 |
IDD |
VFB=0.1V*0.9 |
- |
200 |
- |
电流限制 |
ILIM |
- |
- |
1200 |
- |
PFM 切换点 |
IL |
100 |
|||
振荡频率 |
FOSC |
- |
1.4 |
- |
|
最大占空比 |
MAXDTY |
- |
100 |
- |
- |
八,相关产品
产品名称 |
工作电压(V) |
输出电流(mA) |
控制模式 |
单串LED数量 |
封装形式 |
2.0-6.0 |
800 |
PWM/PFM |
1 |
SOT-23-5 |
|
3.6-6.0 |
300 |
PWM |
7 |
SOT-23-6 |
|
2.6-6.0 |
300 |
PWM |
6 |
SOT-23-6 |
|
2.5-6.0 |
300 |
PWM |
4 |
SOT-23-6 |