SI4779CY

www.DataSheet.co.kr Si4779CY New Product Vishay Siliconix High-Side N-Channel Switch with Current Limit FEATURES D D D D User Set Over Current Limit From 400 mA to 2.4 A Low rDS(on) 45 mW (max) at 25_C Fault Indicator Under Voltage Lockout APPLICATIONS D D D D D Notebook Computers Power Management USB Power Distribution Hot Plug In Power Supplies Power Supply/Load Protection Battery-Charger Circuits DESCRIPTION The Si4779CY n-channel high-side switch combines a low rDS(on) MOSFET switch with a user set, pulse gate control (PGC) based current limit. This switch is designed to protect the system power supply from overloads and short circuit conditions in applications such as USB. The PGC based approach to the current limiter provides the additional benefit of keeping the MOSFET junction temperature within specification, thereby eliminating the need for thermal shutdown. The low quiescent current makes the Si4779CY ideal for use in battery powered devices. The Si4779CY operates on both 3-V and 5-V busses, and is packaged in the LITTLE FOOTr SO-8 package. FUNCTIONAL BLOCK DIAGRAM IN OUT FAULT Control Circuit ON GND See page 7 for a detailed block diagram. Document Number: 71664 S-04276—Rev. A, 16-Jul-01 – SET VR www.vishay.com + 1 Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr Si4779CY Vishay Siliconix New Product ABSOLUTE MAXIMUM RATINGS (TA = 25_C UNLESS OTHERWISE NOTED) Parameter Voltage, IN to GND Voltage, ON Continuous Drain Current (TJ = ...