CXLE8838是一款高效的降压恒流LED驱动器，设计用于有效驱动单个或多个串联LED。这个
该设备从0V到5.5V之间的输入电源运行，并提供外部可调输出电流高达700毫安。取决于
电源电压和外部组件，CXLE8838可驱动3瓦LED。CXLE8838包括工作频率高达1.4MHz的电源开关
输入电压范围：0V至5.5V
可编程LED驱动电流：高达700毫安
工作频率：1.4MHz
静态电流：320uA
高效率（高达93%）
[ CXLE8838 ]
产品技术资料帮助
查看全部>
目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图 6.电路原理图
7.功能概述 8.相关产品
一,产品概述(General Description)
The CXLE8838 is a high-efficiency buck constant-current LED driver,designed for driving single or multiple series connected LED efficiently. The device operates from an input supply between 0V and 5.5V and provides an externally adjustable output current of up to 700mA. Depending upon the supply voltage and external components, the CXLE8838 can drive 3 watts of LED.
The CXLE8838 includes the power switch which operating frequency up to 1.4MHz.
The CXLE8838 package.is available in SOT-23-5L
二.产品特点(Features)
Input voltage range: 0V to 5.5V
Programmable LED Drive Current : up to 700mA
Operating Frequency: 1.4MHz
Quiescent Current: 320uA
High efficiency (up to 93%)
Low Profile SOT-23-5L Package (lead-free packaging is now available)
三,应用范围 (Applications)
Automotive lighting
Low voltage industrial lighting
LED back-up lighting
Constant Current Source
RGB High Brightness LED lighting
四.技术规格书下载（产品PDF）
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)
|
PIN |
PIN NAME |
FUNCTION |
|
1 |
EN |
ON/OFF Control |
|
2 |
GND |
Ground |
|
3 |
SW |
Switch Output |
|
4 |
VIN |
Input |
|
5 |
FB |
Feedback Pin |
六.电路原理图
七,功能概述
Supply Voltage………………………………………………………………..........….….−0.3V to 6.5V
SW Pin Voltage……………………...………………………..…….…….......................−0.3V to 6.5V
Other I/O Pin Voltages……………………….………...…………………...…−0.3V to (VDD + 0.3V)
SW Pin Current ……………………….………….………..…....…………………………………..1.3A
Operating Junction Temperature……….……………………………......……………………. 125°C
Storage Temperature Range……………………………………..….……………… −65°C ~ +150°C
Lead Temperature (Soldering 10 sec) ….…………………………......………………………. 300°C
八,相关芯片选择指南 更多同类产品......
|
降压型LED射灯驱动IC |
||||||||
|
型号 |
工作电压范围 |
输出电流 |
输出电 流精度 |
线性调 整率 |
效率 |
工作频率 |
调光功能 |
封装 |
|
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
PWM调光 |
ESOP8 |
|
|
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
PWM调光 |
SOT-26 |
|
|
6V-60V |
1.2A |
2% |
94% |
1.1MHz |
PWM/模拟 调光 |
SOT-89-5 |
||
|
2V-6.5V |
0.95A |
10% |
0.45% |
92% |
1.4 MHz |
PWM调光 |
SOT-25 |
|
|
2.5V-5.5V |
0.7A |
3% |
93% |
1.4MHz |
PWM调光 |
SOT-25 |
||
|
5.5V-36V |
扩流2.5A |
1% |
96% |
1MHz |
PWM调光 |
SOT-26 |
||
|
4V--28V |
扩流25W |
1% |
96% |
2MHz |
PWM/模拟 调光 |
SOT-26 |
||
|
2.5V-100V |
扩流2.5A |
1% |
90% |
1MHz |
PWM调光 |
SOT-26 |
||
|
5-100V |
1.5A |
1% |
92% |
1MHz |
PWM/模拟 调光 |
ESOP8 |
||
|
5-100V |
2.5A |
1% |
92% |
1MHz |
PWM/模拟 调光 |
ESOP8 |
||
|
6V-100V |
扩流3A |
3% |
95% |
200KHz |
PWM调光 |
SOT-26 |
||
|
8V-45V |
3A |
3% |
95% |
220KHz |
ESOP8 |
|||
|
8V-40V |
4A |
3% |
95% |
220KHz |
PWM调光 |
TO252-5L |
||
|
8V-40V |
5A |
3% |
95% |
220KHz |
TO263-5L |
|||
|
5V-36V |
1.5A |
2% |
96% |
380KHz |
PWM调光 |
SOP-8 |
||
|
4.5V-45V |
2A |
2% |
83% |
150KHz |
PWM调光 |
ESOP8 |
||
|
8V-45V |
3A |
2% |
89% |
150KHz |
ESOP8 |
|||
|
8V-40V |
3A |
2% |
89% |
180KHz |
SOP8 |
|||
|
8V-40V |
3.5A |
2% |
87% |
180KHz |
PWM调光 |
ESOP8 |
||
|
8V-40V |
2A |
2% |
89% |
110KHz |
SOP8 |
|||
|
7V-40V |
2.5A |
2% |
89% |
250KHz |
ESOP8 |
|||
|
8V-40V |
5A |
2% |
86% |
150KHz |
TO263-5L |
|||
|
6V-40V |
1.2A |
3% |
1.50% |
98% |
1MHz(max) |
PWM调光 |
SOT89-5 |
|
|
6V-34V |
1.0A |
5% |
1.50% |
97% |
1MHz(max) |
PWM/模拟 调光 |
SOT89-5 |
|
◀ 上一篇:CXLE8836连续电流模式的降压恒流驱动芯片驱动一颗或多颗串联LED输入电压从6V到55V输出电流1.2A内置功率开关和高端电流检测电路外部电阻设置LED电流通过ADJ引脚接收模拟调光和PWM调光
下一篇▶:CXLE8840 4V到28V的降压型恒流高亮度LED驱动集成电路LED电流通过外部电流检测通电阻设置通过DIM管脚实现LED亮度调整功能调光方式是PWM调光可以是模拟调光25W输出功率
|
|||||||||||||||||
