MC34064LP

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Power Management Integrated Circuits (PMICs) are essential components in modern electronics. They are used to regulate and control electrical power flow and converters , providing efficient and reliable power delivery to a wide array of load. Supervisors is one of the power management IC category, which are usually used in various types of battery operated or low voltage system, such as reprogrammable logic controllers (RLCs) or small portable equipment. MC34064LP is a typical low-power supervisor IC, which can be used as a reset monitor, supply voltage supervisor, or thermal monitoring system.

General Overview

MC34064LP is an integrated circuit (IC) with a power-on reset (POR) function and two complementary open-drain outputs :RESET and RESET. It is composed of an overvoltage comparator with a logic level output, a comparator for undervoltage with open-drain output, and a timer circuit which allows the outputs to remain off until a specified delay period has passed. The overvoltage threshold is set by two resistors, which ensures efficient operation with battery power sources. With the built-in logic level output, the reset can also be interfaced with logic gates. MC34064LP is available in a compact 8-pin package with minimal external components and easy operation.

Working Principle of MC34064LP

MC34064LP’s structure consists of five major blocks, including oscillator, reset comparator, undervoltage comparator, output driver and power switch. The oscillator is powered by an external capacitor and sets the frequency of the reset tiemr operation. The reset comparator monitors the voltage of the power source, and when it exceeds a predetermined threshold level, it will generate a logic high signal to the output driver. On the other hand, the undervoltage comparator monitors the power source and will generate an open-drain output signal RESET when the power level drops below the threshold. When both reset comparator and untervoltage comparator are generating a logic high signal to the output driver, the output driver will continue to generate a reset signal until the delay period has passed. Finally, the power switch can prevent unwanted spurious reset signals by disconnecting the oscillator when the power source drops below threshold.

Application Field of MC34064LP

MC34064LP can be ideally used in various types of battery operated or low voltage system, such as reprogrammable logic controllers, automotive electronics, medical devices, and portable equipment. In addition, MC34064LP is a reliable and low-power supervisor IC designed for long-term operations, and is suitable for use in applications which require both reliable performance and low power consumption. With its built-in logic level output and a wide operational voltage, it can be used as a reset monitor, supply voltage supervisor, or thermal monitoring system, providing stable and reliable performance.

Summary

MC34064LP is an ideal low-power supervisor IC for battery operated or low voltage systems, with its built-in reset comparator, undervoltage comparator, and output driver. It provides maximum flexibility, improved reliability and low power consumption, making it an excellent option for a wide range of PMIC applications. With its low operating voltage and minimal external components, it can be easily used in systems requiring reliable performance and low power consumption.

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