MAX891LEUA Datasheet PDF - Maxim Integrated

●General Description

●The MAX891L/MAX892L smart, 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 temperatures.

●The MAX891L/MAX892L’s maximum current limits are 500mA and 250mA, respectively. The current limit through the switch is programmed with a resistor from SET to ground. When the switch is on, the quiescent supply current is a low 13µA. When the switch is off, the quiescent current decreases to 0.1µA.

●The MAX891L/MAX892L are available in 8-pin µMAX packages.

●Features

●♦ Ultra-Small µMAX Package—Only 1.11mm High

●♦ 2.7V to 5.5V Input Range

●♦ Programmable Current Limit

●♦ Low 13µA Quiescent Current at VIN = 3.3V, 0.1µA Switch Off

●♦ Thermal Shutdown

●♦ FAULT Indicator Output

●♦ On-Resistances:

●   0.12Ω (MAX891L)

●   0.25Ω (MAX892L)

●Applications

●  PCMCIA Slots

●  Access Bus Slots

●  Portable Equipment