LM3544
Overview
The LM3544 is a quad high-side power switch that is an excellent choice for use in Root, Self-Powered and BusPowered 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.
- Compatible with USB1.1 and USB 2.0
- 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 CB
- Input Voltage Range: 2.7V to 5.5V
