CXPR7885是一款主轨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引脚连接到关断比较器，用于驱动保护电路，如光电耦合器，以在发生过电流时关闭一次侧PWM IC。电压分路调节器有一个2.5V参考电压，用于开关电源的二次输出电压反馈。CXPR7885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。
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[ CXPR7885 ]"
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）
一.产品概述
CXPR7885 is a main rail current detection and over current protection IC. It includes a current shunt comparator and shutdown comparator with a precision shunt regulator like
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 primary side PWM IC when over current occurs.
The voltage shunt regulator has a 2.5V reference for switching power supply secondary output voltage feedback.
CXPR7885 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
˙Independent Power Supply Voltage: 2.7 to 28V
˙Wide Operating Temperature Range: -20℃~ +105℃
˙Independent Shunt and Supply Voltage
˙Low Input Offset Voltage
˙Sense Gain Adjustable
˙Built-in 1.25V Comparator for O.C.P
˙Shunt Regulator Voltage: 2.5V (1.0%)
˙Output Sink Current Capability up 50mA
˙Package: SOP-8L
三.应用范围
Ø SPS
Ø AC Adaptor
Ø Isolated Fly-back DC-DC Converter
四.技术规格书（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
六.电路原理图
七.相关芯片选择指南 更多同类产品......
| 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 |
