MAX894LESA

双限流，高边P沟道开关，带有热关断 Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

General Description

The MAX894L/MAX895L smart, dual, low-voltage, P-channel, MOSFET power switches are intended for high-side load-switching applications. These switches operate with inputs from +2.7V to +5.5V, making them 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.

The MAX894L/MAX895L’s maximum current limits are 500mA and 250mA, respectively. The current limit through the switches is programmed with resistors from SET A/SET B to ground. When the switches are on, the quiescent supply current is a low 16µA. When the switches are off, the supply current decreases to 0.1µA.

The MAX894L/MAX895L are available in an 8-pin SO package.

Features

♦ +2.7V to +5.5V Input Range

♦ Programmable Current Limits

♦ Low Supply Current:

   16µA IQ at VIN = 3.3V

   0.1µA with Switch Off

♦ Thermal Shutdown

Applications

  PCMCIA Slots

  Access Bus Slots

  Portable Equipment