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A4772 - POWER SWITCHES

Description

The A4772 is a low voltage, single N-MOSFET high-side power switch, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications.

Features

  • include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present. The maximum current is limited to typically 2.1A/1.5A/1A/0.65A through the switch of A4772A/B/C/D, lower quiescent current as 25uA making this device ideal for portable battery-operated equipment. The A4772 is available in SOT-25 package.

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Datasheet Details

Part number A4772
Manufacturer AiT Semiconductor
File Size 497.34 KB
Description POWER SWITCHES
Datasheet download datasheet A4772 Datasheet
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Full PDF Text Transcription

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AiT Semiconductor Inc. www.ait-ic.com A4772 POWER SWITCHES WITH FLAG 80mΩ, 0.5A/0.8A/1A/1.5A HIGH-SIDE DESCRIPTION The A4772 is a low voltage, single N-MOSFET high-side power switch, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The A4772 equipped with a charge pump circuitry to drive the internal MOSFET switch; the switch's low RDS(ON), 80mΩ, meets USB voltage drop requirements and a flag output is available to indicate fault conditions to the local USB controller. Additional features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present.
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