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uP7558T - Power Distribution Switches

Description

The uP7558T/U is a current limited high-side switch designed for applications where heavy capacitive loads and short-circuits are likely to be met.

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

Features

  • glitch-blank fault flag that is asserted by over current and over temperature. The 8ms glitch-blanking 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.

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Datasheet preview – uP7558T

Datasheet Details

Part number uP7558T
Manufacturer uPI Semiconductor
File Size 158.48 KB
Description Power Distribution Switches
Datasheet download datasheet uP7558T Datasheet
Additional preview pages of the uP7558T datasheet.

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Full PDF Text Transcription

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uP7558T/U Current-Limited, Power Distribution Switches General Description The uP7558T/U is a current limited high-side switch designed for applications where heavy capacitive loads and short-circuits 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 uP7558T/U asserts over current protection and limits the output current to a safe level by driving the power switch into saturation mode.
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