General Description

The MAX893L smart, low-voltage, P-channel, MOSFET power switch is intended for high-side load-switching applications. This switch operates with inputs from +2.7V to +5.5V, making it ideal for both +3V and +5V systems. Internal current-limiting circuitry protects the input supply against overload. Thermal overload protection limits power dissipation and junction temperature.

Features

♦ +2.7V to +5.5V Input Range

♦ Programmable Current Limit

  0.2A to 1.2A Range

  ±20% Accuracy

♦ 1.2A Continuous Load Current

♦ 1.8A Short-Circuit Current

♦ Low Quiescent Current

  13µA at VIN = 3.3V

  0.1µA with Switch Off

♦ Thermal Shutdown

♦ FAULT Indicator Output

♦ 0.07Ω On-Resistance

Applications

USB Ports

USB Hubs

PCMCIA Slots

Access Bus Slots

Portable Equipment