CXMD3261 DC降压同步四个电流限制引脚9V到40V宽电压输入有高侧和低侧驱动器在恒流CC恒压CV两种模式下工作恒定电流CV从1.2V到28V输出电流高达10A以上可调输出电缆电阻补偿

CXMD3261是一种DC/DC降压同步，具有四个电流限制引脚，适用于许多多输出应用。它的设计允许在9V到40V的宽电源电压范围内运行。它有高侧和低侧驱动器，允许使用两个外部电源NMO进行同步配置。该集成电路可以在恒流（CC）和恒压（CV）两种模式下工作。CXMD3261作为一个DC-DC降压控制器工作，在恒定电流（CV）从1.2V到28V、输出电流高达10A或以上时提供广泛的输出。它有一个恒流（CC）模式，这样输出电流可以在外部设置，精度为+/-7%。电流模式控制和外部补偿使反馈控制具有良好的线性和负载调节能力，外部设计灵活。四个独立负载有四个独立的电流限制控制引脚。每个电流限值都可以通过一个100毫伏的电阻（RCS）设置。当然，输出峰值电流限值在正常运行时起作用

车辆识别号：9V至40V
电压：1.2V至28V；典型电压为5V
•CC/CV模式控制
提高轻载效率的PFM模式
•4输出电流精度OCP：可调限流保护
出现OCP/SCP时的突发模式
l保护
NMOS峰值电流限制：精度：~10%
输出短路保护：将输入电流降低至小于20mA（RMS）OVP（输出过压保护）输出FB短路保护温度关闭（OTP）
可调输出电缆电阻补偿
负荷：0~97%
开关频率：100kHz至300KHz
集成MOSFET驱动器
•QFN20包
车辆识别号：9V至40V
电压：1.2V至28V；典型电压为5V
•CC/CV模式控制
提高轻载效率的PFM模式
•4输出电流精度OCP：可调限流保护
出现OCP/SCP时的突发模式
l保护
NMOS峰值电流限制：精度：~10%
输出短路保护：将输入电流降低至小于20mA（RMS）OVP（输出过压保护）输出FB短路保护温度关闭（OTP）
可调输出电缆电阻补偿
负荷：0~97%
开关频率：100kHz至300KHz
集成MOSFET驱动器

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

   产品概述 返回TOP

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     CXMD3261 is a DC/DC Buck Synchronous with four current limit pins suitable for many multi‐output applications. It is designed to allow for operating a wide supply voltage range from 9V to 40V. It has both high‐side and low‐side drivers allowing synchronous configuration using two external power‐NMOS. This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes. CXMD3261 operates as a DC‐DC Buck Controller providing a wide range of outputs at Constant Current (CV) from 1.2V to 28V and the output current as high as 10A or above. It has a Constant Current(CC) mode so that output current can be set externally and at a accuracy of +/‐7%.    The current mode control and external compensation makes feedback control have good line and load regulation with flexible external design. There are four independent current limit control pins for four separate loads. Each of the current limit can be set by a resistor(RCS) at 100mV across it. Of course, output peak current limit is working during normal operation

   产品特点 返回TOP

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    Vin: 9V to 40V    

 Vout: 1.2V to 28V; typical at 5V    

 CC/CV Mode Control 

 PFM Mode for Increased Light Load Efficiency 

 4 outputs current precision OCP: Adjustable Current‐Limit Protection     

 Burst mode when OCP/SCP occur 

 Protection    

NMOS peak current limit:    accuracy：~10%    

Output short protection: reduce input current to less than 20mA(RMS) OVP(output Over‐Voltage Protection) Output FB short protection Temperature shut down(OTP) 

 Adjustable Output Cable Resistance Compensation 

 Duty: 0~97% 

 Switching Frequency: 100kHz to 300KHz    

 Integrated MOSFET Drivers    

 QFN20 Package

 Vin: 9V to 40V    

 Vout: 1.2V to 28V; typical at 5V    

 CC/CV Mode Control 

 PFM Mode for Increased Light Load Efficiency 

 4 outputs current precision OCP: Adjustable Current‐Limit Protection     

 Burst mode when OCP/SCP occur 

 Protection    

NMOS peak current limit:    accuracy：~10%   

Output short protection: reduce input current to less than 20mA(RMS) OVP(output Over‐Voltage Protection) Output FB short protection Temperature shut down(OTP) 

 Adjustable Output Cable Resistance Compensation 

 Duty: 0~97% 

 Switching Frequency: 100kHz to 300KHz    

 Integrated MOSFET Drivers    

 QFN20 Package

   应用范围 返回TOP

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 Car Charger 

 High‐Brightness Lighting 

 General‐Purpose DC/DC Controller

   技术规格书（产品PDF) 返回TOP 

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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！

 

产品封装图 返回TOP

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电路原理图 返回TOP

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PWM Controller(脉宽调制控制器)
Part No.	Input  Voltage	Output  Voltage	Frequency	Efficiency	Package	precision	Over	Over	Short  Protection
							Current	Temperature
							Protection	Protection
CXMD3255	16V	ADJ	300KHZ	93%	SOP8/DFN3*3-10DFN3*3-10	2%	Y	Y	Y
CXMD3256	16V	ADJ	200KHz/300KHZ /600KHz	93%	SOP8/ DFN3*3-10	2%	Y	Y	Y
CXMD3257	35V	ADJ	290-430KHz	93%	DFN3*3-10	2%	Y	Y	Y
CXMD3258	35V	ADJ	290-430KHz	93%	DFN3*3-10	2%	Y	Y	Y
CXMD3259	35V	ADJ	135-215KHz	93%	DFN3*3-10	2%	Y	Y	Y
CXMD3260	35V	ADJ	135-215KHz	93%	DFN3*3-10	2%	Y	Y	Y
CXMD3261	40V	-	100-300KHz	-	QFN20		Y	Y	Y