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Description

FULL DATA SHEET (PDF, 128kB) Download   E-Mail 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. The MAX893L's maximum programmed current limit is 1.2A. The typical short-circuit current is 1.5 times the programmed current; therefore, a 1.2A programmed limit will result in a 1.8A short-circuit current limit. The current limit through the switch is programmed with a resistor from SET to ground. The quiescent supply current is a low 13µA. When the switch is off, the supply current decreases to 0.1µA. The MAX893L is available in an 8-pin SO package.

Key Features		Applications/Uses
+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 Active-low FAULT Indicator Output 0.07Ω On-Resistance		Access Bus Slots PCMCIA Slots Portable Equipment USB Hubs USB Ports

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