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LM3526 - Dual Port USB Power Switch and Over-Current Protection

Download the LM3526 datasheet PDF. This datasheet also covers the LM3 variant, as both devices belong to the same dual port usb power switch and over-current protection family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM3526 provides Universal Serial Bus standard power switch and over-current protection for all host port applications.

The dual port device is ideal for Notebook and desktop PC’s that supply power to more than one port.

Key Features

  • n n n n n n n n n n n n 1 ms fault flag delay filters Hot-Plug events Smooth turn-on eliminates in-rush induced voltage drop UL recognized component: REF# 205202 1A nominal short circuit output current protects PC power supplies Thermal shutdown protects device in direct short condition 500mA minimum continuous load current Small SO-8 package minimizes board space 2.7V to 5.5V input voltage range 140 mΩ Max. switch resistance 1 µA Max. standby current 200 µA Max. operating current Under-voltage.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3-526.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM3526 Dual Port USB Power Switch and Over-Current Protection Texas Instruments
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LM3525 Single Port USB Power Switch and Over-Current Protection Texas Instruments
LM3528 Multi Display LED Driver Texas Instruments
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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM3520 Integrated White LED Driver
LM3524D Regulating Pulse Width Modulator
LM3525 Single Port USB Power Switch and Over-Current Protection
LM35 Precision Centigrade Temperature Sensors
LM350 3-Amp Adjustable Regulators

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM3526 Dual Port USB Power Switch and Over-Current Protection February 2000 LM3526 Dual Port USB Power Switch and Over-Current Protection General Description The LM3526 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The dual port device is ideal for Notebook and desktop PC’s that supply power to more than one port. A 1 ms delay on the fault flag output prevents erroneous overcurrent reporting caused by in-rush currents during hot-plug events. The dual stage thermal protection circuit in the LM3526 provides individual protection to each switch and the entire device. In a short-circuit/over-current event, the switch dissipating excessive heat is turned off, allowing the second switch to continue to function uninterrupted.