Datasheet4U Logo Datasheet4U.com

LM3543 - Triple Port USB Power Distribution Switch and Over-Current Protection

Download the LM3543 datasheet PDF (LM3 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for triple port usb power distribution switch and over-current protection.

Description

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.

Features

  • of the LM3543 include current foldback to reduce power consumption in current overload conditions, thermal shutdown to prevent device failure caused by high-current overheating, and undervoltage lockout to keep switches from operating if the input voltage is below acceptable levels. Features n n n n n n n n n n n n 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-Sa.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3-543.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

  • LM3549 - High Power Sequential LED Driver (Texas Instruments)
  • LM35 - Precision Centigrade Temperature Sensor (Texas Instruments)
  • LM350 - Three-terminal Positive Voltage Regulator (Motorola)
  • LM350 - 3-Amp Adjustable Regulator (Texas Instruments)
  • LM350 - 3 Amp Positive Adjustable Regulator (Linear Technology)
  • LM350 - 3A Positive Voltage Regulator (onsemi)
  • LM350 - Three-terminal 3A adjustable voltage regulators (STMicroelectronics)
  • LM350 - 3-Terminal 3A Positive Adjustable Regulator (Fairchild Semiconductor)
  • LM350-N - 3-Amp Adjustable Regulator (Texas Instruments)
  • LM3500 - Synchronous Step-up DC/DC Converter (Texas Instruments)
Other Datasheets by National Semiconductor
  • LM3544 - Quad Port USB Power Distribution Switch and Over-Current Protection
  • LM35 - Precision Centigrade Temperature Sensors
  • LM350 - 3-Amp Adjustable Regulators
  • LM3501 - Synchronous Step-up DC/DC Converter
  • LM3502 - Step-Up Converter
  • LM3503 - Dual-Display Constant Current LED Driver
  • LM350A - 3-Amp Adjustable Regulators
  • LM351 - Dual Peripheral Drivers

Full PDF Text Transcription

Click to expand full text
LM3543 Triple Port USB Power Distribution Switch and Over-Current Protection March 2001 LM3543 Triple Port USB Power Distribution Switch and Over-Current Protection General Description 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. The LM3543 accepts input voltages between 2.7V and 5.5V. The Enable logic inputs, available in active-high and active-low versions, can be powered off any voltage in the 2.7V to 5.5V range. The LM3543 limits the continuous current through a single port to 1.25A (max.
Published: |