The LM3526 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The dual port device is ideal for Notebook and desktop PC"s that supply power to more than one port.
●A 1 ms delay on the fault flag output prevents erroneous overcurrent reporting caused by in-rush currents during hot-plug events.
●The dual stage thermal protection circuit in the LM3526 provides individual protection to each switch and the entire device. In a short-circuit/over-current event, the switch dissipating excessive heat is turned off, allowing the second switch to continue to function uninterrupted.
●The LM3526 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based in-rush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V. The Enable inputs accept both 3.3V and 5.0V logic thresholds.
●The small size, low RON, and 1 ms fault flag delay make the LM3526 a good choice for root hubs as well as per-port power control in embedded and stand-alone hubs.
● Compatible with USB1.1 and USB 2.0
● 1 ms Fault Flag Delay Filters Hot-Plug Events
● Smooth Turn-on Eliminates In-rush Induced Voltage Drop
● UL Recognized Component: REF# 205202
● 1A Nominal Short Circuit Output Current Protects PC Power Supplies
● Thermal Shutdown Protects Device in Direct Short Condition
● 500mA Minimum Continuous Load Current
● Small SOIC-8 package minimizes board space
● 2.7V to 5.5V Input Voltage Range
● 140 mΩ Max. Switch Resistance
● 1 µA Max. Standby Current
● 200 µA Max. Operating Current
● Under-voltage Lockout (UVLO)
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