Texas Instruments LM3525
The LM3525 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The single port device is ideal for Notebook PC and Handheld PC applications that supply power to one port. The LM3525 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based inrush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V.| Part No. | LM3525 |
|---|---|
| Datasheet | LM3525 Download |
| Manufacturer |  Texas Instruments |
| Description | Single Port USB Power Switch and Over-Current Protection |
| Buy | Stock & Price |
FEATURES
1●2 Compatible with USB1.1 and USB 2.0
● 1 ms Fault Flag Delay During Hot-Plug Events
● Smooth Turn-On Eliminates Inrush Induced Voltage Drop
● UL Recognized Component: REF # 205202
● 1A Nominal Short Circuit Output Current Protects Notebook 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
● Switch Resistance ≤ 120 mΩ Max. at VIN = 5V
● 1µA Max Standby Current
● 100 µA Max Operating Current
● Undervoltage Lockout (UVLO)
DESCRIPTION
A 1 ms delay on fault flag output prevents erroneous overcurrent reporting caused by inrush currents during the hot-plug events. The Enable input accepts both 3.3V and 5.0V logic thresholds. The small size, low RON, and 1 ms fault flag delay make the LM3525 a good choice for root hubs as well as ganged power control in space-critical selfpowered hubs.APPLICATIONS
● Universal Serial Bus (USB) Root Hub...
