A4771

AiT Semiconductor Inc. www.ait-ic.com A4771 POWER SWITCH 1A CURRENT LIMITED LOAD SWITCH DESCRIPTION FEATURES The A4771 Smart Switch is a current limited P-channel MOSFET power switch designed for high-side load switching applications. This switch operates with inputs ranging from 2.4V to 5.5V, making it ideal for both 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 A4771 is also protected from thermal overload which limits power dissipation and junction temperatures. It can be used to control loads that require up to 1A. Current limit threshold is programmed with a resistor from SET to ground. The quiescent supply current is typically a low 9μA. In shutdown mode, the supply current decreases to less than 1μA.  Input Voltage Range: 2.4V to 5.5V  Programmable Over-Current Threshold  Fast Transient Response: 400ns Response to Short Circuit  Low Quiescent Current 9μA Typical 1μA Max with Switch Off  200mΩ Typical RDS(ON)  Only 2.5V Needed for ON/OFF Control  Under-Voltage Lockout  Thermal Shutdown  4kV ESD Rating  Temperature Range: -40°C to +85°C  Available in SOT-25 Package APPLICATION The A4771 is available in SOT-25 package. ORDERING INFORMATION  Hot Swap Supplies  Notebook Computers  Peripheral Ports  Personal Communication Devices Package Type Part Number SOT-25 A4771E5R-X E5 A4771E5VR-X X: H: High Level Active Note L: Low Level A...