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US3577 - POWER DISTRIBUTION SWITCH

Download the US3577 datasheet PDF. This datasheet also covers the US3177 variant, as both devices belong to the same power distribution switch family and are provided as variant models within a single manufacturer datasheet.

General Description

The UTC US3X77 is a power distribution switch and particularly designed for self-powered and bus-powered Universal Serial Bus (USB) applications.

Key Features

  • 100mΩ High-Side MOSFET.
  • Supply Current: Switch on : 65μA(Typ) Switch off : 1μA (Max).
  • Accurate Current Limit with Foldback.
  • Deglitched Open-Drain Over-Current Flag Output (OC).
  • No Reverse Current when Power Off.
  • Under voltage Lockout.
  • Operating Range:2.7V ~ 5.5V.
  • Output Shutdown Pull-low Resistor.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (US3177-UnisonicTechnologies.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Unisonic Technologies

Part Number Description
US301 0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH
US3075 POWER DISTRIBUTION SWITCH
US3076 DUAL USB HIGH-SIDE POWER SWITCH
US3175 POWER DISTRIBUTION SWITCH
US3176 DUAL USB HIGH-SIDE POWER SWITCH

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
UNISONIC TECHNOLOGIES CO., LTD US3X77 POWER DISTRIBUTION SWITCH  DESCRIPTION The UTC US3X77 is a power distribution switch and particularly designed for self-powered and bus-powered Universal Serial Bus (USB) applications. The UTC US3X77 incorporates protection circuits including current limiting circuit with foldback function, thermal shutdown circuit designed to prevent catastrophic switch failure due to increasing power dissipation when continuous heavy loads or short circuit occurs. Besides, a built-in charge pump is used to drive the N-channel MOSFET that is free of parasitic body diode to eliminate any reversed current flow across the switch when it is powered off. The RDS(ON) of the MOSFET switch is as low as 100mΩ.