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Active Low Power-On Reset Timer (1s POR)

Active Low Power-On Reset Timer (1s POR)

The LTC6995 provides a simple, accurate low frequency clock uniquely configurable for long duration power-on reset and watchdog timer applications. In this example the LTC6995 combines an programmable oscillator with precision circuitry and logic to achieve an accurate 1 second POR. This resistor-settable POR can be programmed for a period from 1ms to 4.8 hours. Upon power-on or a reset signal, the LTC6995 will initiate a full output clock cycle and the polarity of the output can be configured for active-low or active-high operation. The LTC6995 can operated under high acceleration, vibration and temperature extremes and do not require timing capacitors, crystals, microcontroller or programming.




LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

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