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MAX1693 - USB Current-Limited Switches

General Description

The MAX1693/MAX1694 are current-limited, 60m Ω switches with built-in fault blanking.

Their accurate preset current limit of 0.7A to 1.0A makes them ideally suited for USB applications.

Key Features

  • to ensure that the USB port is protected. Built-in thermaloverload protection limits power dissipation and junction temperatures. Both devices have accurate internal current-limiting circuitry to protect the input supply against overload. They are available in space-saving 10-pin µMAX packages. Features o Accurate Current Limit (0.7A min, 1.0A max) o Guaranteed 0.75A Short-Circuit Protection o 10ms Internal Fault-Blanking Timeout o No Fault Signal During Power-Up o Latched FAULT Output Turns Of.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1518; Rev 0; 9/99 USB Current-Limited Switches with Fault Blanking General Description The MAX1693/MAX1694 are current-limited, 60m Ω switches with built-in fault blanking. Their accurate preset current limit of 0.7A to 1.0A makes them ideally suited for USB applications. Their low quiescent supply current (14µA) and shutdown current (1µA) conserve battery power in portable applications. The MAX1693/ MAX1694 operate with inputs from +2.7V to +5.5V, making them ideal for both +3V and +5V systems. A fault signal notifies the microprocessor that the internal current limit has been reached. A 10ms fault-blanking feature allows momentary faults (such as those caused when hot-swapping into a capacitive load) to be ignored, thus preventing false alarms to the host system.