AiT Semiconductor A4776
The A4776 is Adjustable USB Load Current Switch 2.5 to 5.5V input voltage range Current Limited designed for high-side load switching Controlled turn-on applications. The internal current-limiting circuit 0.15-1.3A adjustable current limit protects the input supply against large output short ±6% current limit accuracy circuit current which may cause the supply to fall out 0.25ohm on resistance of regulation. These are stress ratings only and operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied.DESCRIPTION
FEATURES
The A4776 is Adjustable USB Load Current Switch● 2.5 to 5.5V input voltage range Current Limited designed for high-side load switching
● Controlled turn-on applications. The internal current-limiting circuit
● 0.15-1.3A adjustable current limit protects the input supply against large output short
● ±6% current limit accuracy circuit current which may cause the supply to fall out
● 0.25ohm on resistance of regulation.
● Fast current limit response time The current limit threshold is programmed with an
● Logic Control Shutdown (IQ<1uA) external resistor from ISET Pin to ground. The
● Thermal shutdown and UVLO quiescent supply current is typically 150μA, making
● Reverse current blocking the device ideal for portable battery-operated
● Available in SOT-25 Package equipment. In shutdown mode, the supply current decreases to less than 0.1μA. APPLICATION Additional features include thermal shutdown and constant current output characteristics if current
● Portable Devices exceed its current limit.