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LM3543 Datasheet Triple Port Usb Power Distribution Switch And Over-current Protection

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM3543 Triple Port USB Power Distribution Switch and Over-Current Protection March 2001 LM3543 Triple Port USB Power Distribution Switch and Over-Current.

This datasheet includes multiple variants, all published together in a single manufacturer document.

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.

Key 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.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
LM3544 Quad Port USB Power Distribution Switch and Over-Current Protection
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LM350 3-Amp Adjustable Regulators
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LM3503 Dual-Display Constant Current LED Driver
LM350A 3-Amp Adjustable Regulators
LM351 Dual Peripheral Drivers
LM3519 High Frequency Boost White LED Driver
LM3520 Integrated White LED Driver

LM3543 Distributor