电流检测过流保护芯片CXPR7884宽工作电压+2.7V~+28V独立分路和供电电压可调感测增益低输入偏置电压输出漏电流能力16mA

CXPR7884是一款电流检测和过流保护芯片。它包括一个电流分流比较器和一个像CXPR7884这样的精密分流调节器关闭比较器。钢轨电流检测增益可通过三个外部电阻进行调节。稳压器输出CSO引脚连接到关闭比较器，用于驱动保护电路，如光电耦合器，以在发生过电流时关闭转换器的一次侧PWM IC。电压并联调节器有一个1.25V参考电压，用于开关电源的二次输出电压反馈。CXPR7884可用于OCP和输出电压反馈功能，外部部件少。适用于SPS或隔离反激DC-DC变换器的二次主轨供电

                          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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 CXPR7884 is a current detection and over current protection IC. It includes a current shunt comparator and shutdown comparator with a precision shunt regulator like CXPR7884. The rail current detection gain can be adjusted with three external resistors. The regulator output CSO pin is connected to a shutdown comparator for driving a protection circuit like a photo-coupler to shutdown the converter’s primary side PWM IC when over current occurs. The voltage shunt regulator has a 1.25V reference for switching power supply secondary output voltage feedback.
    CXPR7884 can be used for OCP and output voltage feedback function with few external parts. It is suitable for application in secondary main rail power supply of SPS or isolated fly-back DC-DC converter 

二.产品特点

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˙Wide Operating Voltage Range: +2.7V~ +28V
˙Comparator Reference Voltage: 1.25V (2%)
˙Independent Shunt and Supply Voltages
˙Adjustable Sense Gain
˙Low Input Offset Voltage
˙Output Sink Current Capability up to 16mA
˙Package: SOP-8L

三.应用范围

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SPS

DC-DC Converter

Isolated Fly-back DC-DC Converter

Current Sense Instrument    

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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电流保护CURRENT PROTECTION
Part No.	VIN		Vsense	Reference	Swing	Notes	Package	Status
	(Min)	(Max)		Voltage
	(V)		(mV)	(V)
CXPR7883A	2.7	28	100		Rail-to-Rail	Current Shunt	SOT23-5	MP
CXPR7884	2.7	28	100	1.25	Rail-to-Rail	Current Shunt and Photo-Driver   Comparator	SOP8	MP
CXPR7885	2.7	28	100	1.25/2.5	Rail-to-Rail	Current Shunt and Voltage Shunt   Regulator	SOP8	MP