Part Number: LM3526
Function: Dual Port USB Power Switch and Over-current Protection
Package: SO-8 Pin Type
Manufacturer: Texas Instruments
Image and Pinouts:
Description
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
• 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)
Applications:
1. Universal Serial Bus (USB) Root Hubs including Desktop and Notebook PC
2. High Power USB Devices Requiring In-rush Limiting
Other data sheets are available within the file:
LM3526M-H, LM3526M-H/NOPB, LM3526M-L, LM3526M-L/NOPB
LM3526 Datasheet PDF Download
