General Description

The MAX1922 current-limited 70mΩ switch with built-in fault blanking provides an accurate, preset 1.4A to 2.1A current limit, making it ideal for dual USB applications. Its low quiescent supply current (16µA) and standby current (1µA) conserve battery power in portable applications. The MAX1922 operates with inputs from 2.7V to 5.5V, making it ideal for both 3V and 5V systems.

Features

♦ Accurate Current Limit (1.4A min, 2.1A max)

♦ 10ms Internal OC Blanking Timeout

♦ OC Blanking During Power-Up

♦ 125mΩ (max) High-Side MOSFET

♦ Short-Circuit and Thermal Protection with Overcurrent Logic Output

♦ Undervoltage Lockout

♦ 16µA Quiescent Supply Current

♦ 1µA (max) Standby Supply Current

♦ 2.7V to 5.5V Supply Range

♦ UL Recognized: UL# E211395

Applications

    Notebook Computers

    USB Ports

    USB Hubs

    Docking Stations