• Part: LM3543
  • Description: Triple Port USB Power Distribution Switch and Over-Current Protection
  • Manufacturer: National Semiconductor
  • Size: 316.06 KB
LM3543 Datasheet (PDF) Download
National Semiconductor
LM3543

Overview

The LM3543 is a triple high-side power switch that is an excellent choice for use in Root, Self-Powered and Bus-Powered USB (Universal Serial Bus) Hubs. Independent port enables, flag signals to alert USB controllers of error conditions, controlled start-up in hot-plug events, and short circuit protection all satisfy USB requirements.

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  • 90mΩ (typ.) High-Side MOSFET Switch 500mA Continuous Current per Port 7 ms Fault Flag Delay Filters Hot-Plug Events Industry Standard Pin Order Short Circuit Protection with Power-Saving Current Foldback Thermal Shutdown Protection Undervoltage Lockout Recognized by UL and Nemko Input Voltage Range: 2.7V to 5.5V 5 µA Maximum Standby Supply Current 16-Pin SOIC Package Ambient Temperature Range: -40˚C to 85˚C