CXLE8838高效的降压恒流LED驱动器有效驱动单个或多个串联LED可编程LED驱动电流700毫安频率1.4MHz的电源开关

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%）

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)      

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          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)

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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)

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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）

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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！

 

五,产品封装图 (Package)

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PIN NUMBER SOT-23- 5L	PIN NAME	FUNCTION
1	EN	ON/OFF Control (High Enable)
2	GND	Ground
3	SW	Switch Output
4	VIN	Input
5	FB	Feedback Pin

六.电路原理图

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七,功能概述

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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......

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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
CXLE8835ES	6V-40V	1.2A	3%	1.50%	98%	1MHz(max)	PWM调光	ESOP8
CXLE8835MR	6V-40V	1.2A	3%	1.50%	98%	1MHz(max)	PWM调光	SOT-26
CXLE8836	6V-60V	1.2A	2%		94%	1.1MHz	PWM/模拟 调光	SOT-89-5
CXLE8837	2V-6.5V	0.95A	10%	0.45%	92%	1.4 MHz	PWM调光	SOT-25
CXLE8838	2.5V-5.5V	0.7A	3%		93%	1.4MHz	PWM调光	SOT-25
CXLE8839	5.5V-36V	扩流2.5A	1%		96%	1MHz	PWM调光	SOT-26
CXLE8840	4V--28V	扩流25W	1%		96%	2MHz	PWM/模拟 调光	SOT-26
CXLE8841	2.5V-100V	扩流2.5A	1%		90%	1MHz	PWM调光	SOT-26
CXLE8842	5-100V	1.5A	1%		92%	1MHz	PWM/模拟 调光	ESOP8
CXLE8843	5-100V	2.5A	1%		92%	1MHz	PWM/模拟 调光	ESOP8
CXLE8844	6V-100V	扩流3A	3%		95%	200KHz	PWM调光	SOT-26
CXLE8845	8V-45V	3A	3%		95%	220KHz		ESOP8
CXLE8846	8V-40V	4A	3%		95%	220KHz	PWM调光	TO252-5L
CXLE8847	8V-40V	5A	3%		95%	220KHz		TO263-5L
CXLE8848	5V-36V	1.5A	2%		96%	380KHz	PWM调光	SOP-8
CXLE8849	4.5V-45V	2A	2%		83%	150KHz	PWM调光	ESOP8
CXLE8850	8V-45V	3A	2%		89%	150KHz		ESOP8
CXLE8851	8V-40V	3A	2%		89%	180KHz		SOP8
CXLE8852	8V-40V	3.5A	2%		87%	180KHz	PWM调光	ESOP8
CXLE8853	8V-40V	2A	2%		89%	110KHz		SOP8
CXLE8854B	7V-40V	2.5A	2%		89%	250KHz		ESOP8
CXLE8855	8V-40V	5A	2%		86%	150KHz		TO263-5L
CXLE8835	6V-40V	1.2A	3%	1.50%	98%	1MHz(max)	PWM调光	SOT89-5
CXLE8835B	6V-34V	1.0A	5%	1.50%	97%	1MHz(max)	PWM/模拟 调光	SOT89-5