text.skipToContent text.skipToNavigation


Single Port USB Power Switch and Over-current Protection


Package | PIN: D | 8
Temp: Q (-40 to 125)
Carrier: Partial Tube
Qty Price
1-9 $1.68
10-24 $1.50
25-99 $1.40
100-249 $1.22
250-499 $1.12
500-749 $0.94
750-999 $0.77
1000+ $0.71


  • 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)

All trademarks are the property of their respective owners.

Texas Instruments  LM3525M-H/NOPB

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.

A 1 ms delay on fault flag output prevents erroneous overcurrent reporting caused by inrush currents during the hot-plug events.

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. 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 self-powered hubs.