NCP391中文资料Positive Overvoltage Protection Controller with Internal Low RON NMOS FET数据手册ONSEMI规格书

描述 Description

The NCP391 is able to disconnect the systems from its output pin in case wrong input operating conditions are detected.The system is positive overvoltage protected up to +28 V. Due to this device using internal NMOS, no external device is necesary, reducing the system cost and the PCB area of the application board. The NCP391 is able to instantaneously disconnect the output from the input, due to integrated Low Ron Power NMOS (120 mΩ, if the input voltage exceeds the overvoltage threshold (OVLO) or undervoltage threshold (UVLO)). At powerup (EN(BAR) pin = low level), the Vout turns on ton after the Vin exceeds the undervoltage threshold. The NCP391 provides a negative going flag(FLAG(BAR)) output, which alerts the system that a fault has occurred.In addition, the device has ESD-protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor.

特性 Features

• Overvoltage Protection up to 28 V
• On-Chip Low RDS(on) NMOS Transistor: 120 mΩ
• Overvoltage Lockout (OVLO)
• Internal Soft start
• Shutdown EN(BAR) Input
• ESD Ratings:Machine Model = B, Human Body Model = 3

应用 Application

• Over-Voltage Protection
• Cell Phones, Camera Phones, Digital Still Cameras, PDA, Tablet, Wireless accessory and MP3 Players

简介

NCP391属于集成电路（IC）的电源管理-专用。由ONSEMI制造生产的NCP391电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。