EUP3506-双路1.5A具有低导通阻抗的线性开关 DataSheet 

概述
EUP3506集成了两个独立的低漏失的线性开关，每路开关都具有开/关控制、输出电流软启动和输出限流的功能.
应用时，将EUP3506连接至降压DC/DC的输出端，使能引脚控制每路开/关以最大效率来传递电压。因此，EUP3506能延长电池的寿命和工作时间。
当EN引脚接低电压时，IC进入关断模式。此时，即使芯片的输出端连接容性负载，电容负载上存储的电荷也会被内部的放电开关快速放电至地，从而输出VOUT的电压也会快速下降到地。可以利用外部可编程的软启动功能来设置上电时序，以避免启动阶段的输入电流过冲。
EUP3506还包括了过流和过热保护功能。

特点
‧双路100mΩ的导通电阻
‧2.5V到5.5V的输入电压范围
‧低关断电流：<1uA
‧开/关控制
‧高速自动放电
‧输出电流软启动
‧输出电流限制
‧过温关断
‧3mm×3mm TDFN-10封装
‧符合RoHS规范及Pb-Free

应用
‧便携式设备
‧膝上型、掌上型和笔记本电脑
‧LCD电视机显示器

EUP3506-Dual 1.5A Line Switch with Low On-Resistance 

Description
The EUP3506 contains two independent low dropout line switches with ON/OFF control, output current soft-start and output current protection.
By connecting the EUP3506 to the output pins of two step-down DC/DC converters, the EN1/EN2 pins control ON/OFF for each distribution switch to deliver power per requirements and maximize total power efficiency. As a result, the EUP3506 helps to same system power and extend battery life.
When a low signal is inputted to the EN pin, each switch enters shutdown mode. Even a load capacitor is connected to the output pin during shutdown, the electric charge stored at the load capacitor is discharged through the internal switch. As a result, the VOUT pin voltage falls quickly to the GND level. Externally programmable soft-start allows proper power on sequencing with respect to other power supplies and avoids input inrush current during startup.
Other features include current limit protection and thermal shutdown protection.

Feature
‧Dual 100mΩ P-channel MOSFET
‧2.5V to 5.5V Input Voltage Range
‧Low Shutdown Current：<1μA
‧ON/OFF Control on Each Channel
‧High Speed Auto Discharge
‧Output Current Soft-start
‧Output Current Limit on Each Channel
‧Thermal Shutdown
‧Available in 3mm×3mm TDFN-10 Package
‧RoHS Compliant and 100% Lead (Fb)-Free Halogen-Free

Application
‧Portable Equipment
‧Laptop, Palmtops, Notebook Computers
‧LCD Monitor TV