FEATURES

80mΩ (TYP) High-side P-Channel MOSFET

Low Quiescent Current

Input Voltage from 2.5V to5.5V

Three Current Limit Levels

1.1A, 2.1A, 2.6A

Maximum Shutdown Current ≤1uA

Soft-Start Function

Under-Voltage Lockout Protection for VIN

No Reversed Leakage Current

Thermal Shutdown Protection

Fast turn on response

Operation temperature from -40°C to 85°C

DESCRIPTION FEATURES

The A4788 is intended for applications where

heavy capacitive loads and short circuits are likely

to be encountered. The A4788 is an integrated

80mΩ (TYP) power switch for self-powered and

bus powered universal series bus (USB)

applications.

The A4788 is internally current limited and has

thermal shutdown function to protect device and

load from over-current damage. Thermal

shutdown shuts off the output MOSFET and

asserts the flag pin output if the die temperature

exceeds 150°C until the die temperature drops to

130°C.

The soft-start circuit can minimize inrush current

in applications where highly capacitive loads are

employed.

The flag pin asserts low when during over-current

and thermal conditions after a 13ms blanking time

to prevent false reporting.

The A4788 is available in SOT-25 packages.

APPLICATION

Smart Phone & LCD TV

Set-Top-Box

VOIP

USB Bus/Self Powered Hubs/Peripherals

Portable Consumer or Medical Products