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uP7558 - Power Distribution Switches

General Description

The uP7558 is a current limited high-side switch designed for applications where heavy capacitive loads and shortcircuits are likely to be met.

This device operates with inputs from 2.7V to 5.5V for both 3V and 5V systems.

Key Features

  • glitch-blank fault flag that is asserted by over current and over temperature. The 8ms glitchblanking time allows momentary faults to be ignored, thus preventing false alarms to the host system. Other 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, and output reverse voltage to turn o.

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Datasheet Details

Part number uP7558
Manufacturer uPI Semiconductor
File Size 189.04 KB
Description Power Distribution Switches
Datasheet download datasheet uP7558 Datasheet

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.

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uP7558 Current-Limited, Power Distribution Switches General Description The uP7558 is a current limited high-side switch designed for applications where heavy capacitive loads and shortcircuits are likely to be met. This device operates with inputs from 2.7V to 5.5V for both 3V and 5V systems. Its low quiescent current and shutdown current(<1uA) conserve battery power in portable. The power switch is controlled by a logic enable input and driven by an internal charge pump circuit. When the output load exceeds the current-limit threshold or a short is present, the uP7558 asserts over current protection and limits the output current to a safe level by driving the power switch into saturation mode.