CXLE8628A CXLE8628B恒流调节器驱动低静态电流和低压降的LED通过外部电阻从10毫安调整到1安输出电流通过外部直流控制电压或PWM控制来调节

CXLE8628A是一种恒流调节器，用于驱动具有低静态电流和低压降的LED。电流可以通过外部电阻从10毫安调整到1毫安。CXLE8628B只是控制器，必须连接到外部NMOS。CXLE8628B是一个外部晶体管，适用于需要高输出电流的应用。CXLE8628B的输出电流可以通过外部直流控制电压或PWM控制来调节。只有一个外部电阻需要实现恒流LED驱动器。还提供软启动、热保护和低压保护。驱动器引脚EXT用于电流和电压扩展。在这个管脚上增加一个外部NMOS或NPN晶体管可以扩大电流和电压范围
•CXLE8628B只是一个控制器，必须连接到外部NMOS。
•CXLE8628B输出电流可调
漏电流：10mA至1A，可通过外部电阻器调节
通过添加外部NMOS或NPN晶体管，可扩展电流和电压范围
电源电压：2.7-18V
低跌落电压：50mV@1A
低静态电流：80uA
热关机保护：165摄氏度
软启动
低压保护：2.5V
封装：CXLE8628A:SOT89-5，ESOP8 CXLE8628B:SOT33-5

                          目录

   1.产品概述      2.产品特点      3.应用范围     4.技术规格书下载（PDF文档）

   5.产品封装      6.电路原理图     7.相关产品

一.产品概述

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       The CXLE8628A is a constant current regulator for driving LEDs with low quiescent current and low dropout voltage. The current is adjustable from 10mA to1A with an external resistor. The CXLE8628B is only a controller , and must be connected to an external NMOS. CXLE8628B is an external transistor, is suitable for applications requiring a high output current . The output current of CXLE8628B can be adjusted by external DC control voltage or PWM control. Only one external resistor is required to achieve a constant current LED driver. Soft start , thermal protection and low voltage protection are also provided. The driver pin EXT is provided for current and voltage extension. Adding an external NMOS or NPN transistor to this pin can extend current and voltage range.  

二.产品特点

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  CXLE8628B is only a controller , and must be connected to an external NMOS.

  The output current of CXLE8628B is adjustable

  Sink current:10mA to1A adjustable with an external resistor

  Current and voltage range extendable by adding an external NMOS or NPN transistor

  Power supply voltage: 2.7-18V

  Low drop out voltage: 50mV@1A

  Low quiescent current: 80uA

  Thermal Shutdown protection：165℃

  Soft start

  Low voltage protection: 2.5V

  Package: CXLE8628A: SOT89-5, ESOP8 CXLE8628B: SOT23-5

三.应用范围

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 Power Led driver and controller    

四.技术规格书（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

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六.电路原理图

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七.相关芯片选择指南     更多同类产品......

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线性恒流LED驱动电路(Linear Constant LED Driver)
Part No.	Mode	VIN	No. Channels	Driving Current	Freq. (MHz)	Accu.	Channel Matching	Package	Application
CXLE8622	Linear	2.7~6V	3	20mAx3	N/A	±3%	N/A	SOT23-6	PHONE,PDA,GPS
CXLE8623	Linear	2.8~5.5V	4	20mA×4	N/A	±3%	±3%	MSOP8	PHONE,PDA,GPS

Linear   Constant LED Driver(线性恒流LED驱动电路)
Part Number	VIN	IOUT	Accu	Application	Package
CXLE8628	2.7-18V	1000mA	±5%	LED Lighting	SOT89-5