Description
Product Overview
LM3526MX-LNOPB Power Distribution Switch
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.
Features of LM3526MX-LNOPB Power Distribution Switch
- 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
- 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)
Applications
- Universal Serial Bus (USB) Root Hubs including Desktop and Notebook PC
- USB Monitor Hubs
- Other Self-Powered USB Hub Devices
- High Power USB Devices Requiring In-rush Limiting
- General Purpose High Side Switch Applications
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