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2022-09-24 23:33:15
LP3470-miniature power supply power-on reset circuit
The LP3470 is a micropower CMOS voltage supervisory circuit that monitors the power design of microprocessors (microprocessors) and other digital systems. It provides maximum adjustable 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 a voltage option between 2.4V and 5.0V is desired please contact your National Semiconductor representative. When the LP3470 asserts the reset signal, the VCC supply voltage is below the reset threshold. The reset timeout period is adjustable using an external capacitor. Reset remains asserted for a time interval (programmed by an external capacitor) when VCC rises above the threshold voltage. The device is in the tiny SOT23-5 package.
Features
* Tiny SOT23 - 5 package
* Open drain reset output
* Programmable reset timeout period using an external capacitor
* Immune to short VCC transients
application
* Critical μP and μC power monitoring
* Smart instrument
* computer
* Portable/battery powered devices