The MAX891L/MAX892LEUA 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/MAX892LEUA are available in 8-pin μMAX packages.
Feature
- 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-bar Indicator Output
- On-Resistances:
- 0.12Ω (MAX891L)
- 0.25? (MAX892L)
Applications
- Access Bus Slots
- PCMCIA Slots
- Portable Equipment