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US222 - 0.5A TO 2.0A HIGH-SIDE POWER DISTRIBUTION SWITCHES

Description

The UTC US222 are low voltage cost-effective high-side power switches with flag function.

These devices are particularly suitable for self-powered and bus-powered USB applications.

The build-in N-MOSFET’s RDS(ON) which meets the requirements of USB voltage drop is as low as 85 mΩ.

Features

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  • Low MOSFET On Resistance: 85mΩ.
  • Under-voltage Lockout.
  • Compliant to USB Specifications.
  • Over-current Protection.
  • Available 4 Versions of Continuous Load: 0.5A/1.0A/1.5A/2.0A.
  • Over Temperature Protection.
  • Logic Level Enable Pin: Available with Active-high or Active-low.
  • Load Short Protection with Fold-back Version.
  • Deglitched FLAG Output with Open Drain.
  • Low Supply Current: 68µA (Typ. ).
  • No Reverse Current When Power Off.
  • Low Sh.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD US222 Preliminary LINEAR INTEGRATED CIRCUIT 0.5A TO 2.0A HIGH-SIDE POWER DISTRIBUTION SWITCHES  DESCRIPTION The UTC US222 are low voltage cost-effective high-side power switches with flag function. These devices are particularly suitable for self-powered and bus-powered USB applications. The build-in N-MOSFET’s RDS(ON) which meets the requirements of USB voltage drop is as low as 85 mΩ. The UTC US222 contains a charge pump circuitry to drive the internal MOSFET switch and also incorporate such protection circuits: soft-start circuit protect these devices from being damaged by limiting inrush current during plug-in; thermal shutdown circuit is used to prevent catastrophic switch failure from high-current loads.
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