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车规 ET20173
General Description
The ET20173 is dual channel current limited P-channel MOSFET power switch designed for high-side load switching applications. This switch operates with inputs ranging from 2.5V to 5.5V, making it ideal for both 3.3V and 5V systems. An integrated current-limiting circuit protects the input supply against large currents which may cause the supply to fall out of regulation.
The ET20173 is also protected from thermal overload which limits power dissipation and junction temperatures. Current limit threshold is fixed internally. The quiescent supply current in active mode is only 50uA. In shutdown mode, the supply current decreases to less than 1uA.
The ET20173 is available in Pb-free packages and is specified over the -40°C to +85°C ambient temperature range.
Features
Input Voltage Range: 2.5V to 5.5V
Fixed Current Limit
Reverse Current Blocking
Short-Circuit Response: 2us
Very Low Quiescent Current: 50uA (Typ)
1uA Max Shutdown Supply Current
Under-Voltage Lockout
Thermal Shutdown
4kV ESD Rating
Ambient Temperature Range: -40°C to +85°C
Applications
Laptop/Desktop Computers
LCD TVs and Monitors
Set-Top-Boxes
Printers
Portable Media Players and MIDs
USB Keyboards
USB Hard Disk Drives
USB Hubs
Pin Configuration
Block Diagram
Application Circuits
