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发布者:来自网络 发布时间:2014/7/24 阅读:5668次    关键字: DC-DC
EUP3504-1.8A Line Switch with Low On-Resistance


EUP3504-1.8A Line Switch with Low On-ResistanceDataSheet

DESCRIPTION

      The EUP3504 is a low dropout line switch IC with ON/OFF control and output current protection which integrates a P-channel MOSFET.
      By connecting the EUP3504 to the output pin of a step-down DC/DC converter, the EN pin controls ON/OFF for each distribution switch to deliver power per requirements and maximize total power efficiency. As a result, the EUP3504 helps to extend battery life and product operation time.
      The EUP3504 contains a current limit protection circuit so these are not required externally unlike discrete circuit solutions where MOSFETs and resistors are used. Externally programmable soft-start allows for proper power on sequencing with respect to other power supplies and avoids input inrush current during startup.
      When a low signal is input to the EN pin, the IC enters shutdown mode. Even where 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. The EUP3504 contains thermal shutdown protection.

FEATURES

‧3.3V to 13.5V Input Voltage Range
‧110mΩ On Resistance
‧Low 90μA Quiescent Current
‧Low Shutdown Current:<4μA
‧ON/OFF Control Function
‧Externally Programmable Current Soft-Start
‧High Speed Auto Discharge Function
‧Operating Temperature Range: -40°C ~+85°C
‧2.35A Output Current Limit
‧Thermal Shutdown
‧RoHS Compliant and 100% Lead (Fb)-Free Halogen-Free

APPLICATIONS

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

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