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LP3470 - Tiny Power-On Reset

General Description

The LP3470 is a micropower CMOS voltage supervisory circuit designed to monitor power supplies in microprocessor (µP) and other digital systems.

It provides maximum adjustability for power-on-reset (POR) and supervisory functions.

Key Features

  • n Tiny SOT23-5 Package n Open Drain Reset Output n Programmable Reset Timeout Period Using an External Capacitor n Immune to Short VCC Transients.

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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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LP3470 Tiny Power On Reset Circuit June 1999 LP3470 Tiny Power On Reset Circuit General Description The LP3470 is a micropower CMOS voltage supervisory circuit designed to monitor power supplies in microprocessor (µP) and other digital systems. It provides maximum adjustability for power-on-reset (POR) and supervisory functions. It is available in the following six standard reset threshold voltage (VRTH) options: 2.63V, 2.93V, 3.08V, 4.00V, 4.38V, and 4.63V. If other voltage options between 2.4V and 5.0V are desired please contact your National Semiconductor representative. The LP3470 asserts a reset signal whenever the VCC supply voltage falls below a reset threshold. The reset time-out period is adjustable using an external capacitor.