MAX6340UK32+T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	3.2V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	MAX6340

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Abstract

The MAX6340UK32+T is a power management IC (PMIC) that provides high-resolution monitoring, detection, and protection of single or multiple supplies in battery-powered applications. In this article, we\'ll discuss the application field and working principle of the MAX6340UK32+T PMIC. We\'ll start with a brief overview of its features and then move on to its practical use cases, illustrating the advantages and limitations of this particular device. We\'ll then discuss the general functionality of the MAX6340UK32+T, followed by its typical application circuit diagrams, before concluding with a summary of its key features.

Introduction

The MAX6340UK32+T is a single-channel, high-precision, ultra-low-power supervisor chip applicable to battery-powered systems. It is a small, versatile, and highly integrated device to monitor and protect the power supply, ensure system reliability and stability, and eliminate the need for external resistors or capacitors.This supervisor chip features a programmable threshold voltage and hysteresis, two independent push-pull outputs, and low quiescent current for ultra-low-power applications. Compared to other power management devices, the MAX6340UK32+T offers better accuracy and improved performance in both battery- and AC-supplied circuits.

Features and Specifications

The MAX6340UK32+T is available in two versions, one with an internal oscillator and one with an external clock source. This device integrates several features, including an internal 0.5V reset, two dedicated reset outputs, programmable delay of one reset output, programmable active-voltage monitoring, and an active-voltage detection.The compact package size of the MAX6340UK32+T contributes to its popularity. The tiny 5-pin MiniSOIC-5 package is small enough to fit into most handheld applications. The device also features a low-voltage monitor, designed to guard against low battery conditions.In terms of accuracy, the MAX6340UK32+T has a ±1.2% voltage accuracy, as well as a ±2% hysteresis. Additionally, it has a typical quiescent current of 5µA, and an extended operating voltage range of 1.8V to 5.5V. Finally, the device features an adjustable reset periods of up to 980ms, and a fixed 160ms reset delay.

Use Cases

The MAX6340UK32+T is suitable for both battery-powered and AC-supplied applications, including consumer and industrial electronics. It is particularly well suited for portable devices and wearable applications because of its low power consumption and small form factor.The device is ideal for applications that require precise voltage monitoring, such as handheld medical devices, industrial controls, and smart home systems. It can also be used in battery-operated systems, such as medical and consumer electronics, to prevent overcharging, undercharging, and undervoltage conditions.For consumer applications, the low power consumption of the MAX6340UK32+T makes it an ideal choice. It can be used in portable portable audio players, digital cameras, and cell phones for improved battery life and extended operational time between charges.

General Working Principle

The MAX6340UK32+T is used to monitor a single or multiple sources of power. It contains an internal voltage-voltage comparator, which compares the input voltage with a fixed voltage reference. When the input voltage exceeds the reference voltage, the output of the comparator is activated and a reset signal is sent to the system.The device also contains an adjustable delay circuit, which can be set to perform a period of active voltage monitoring and reset delay. This circuit can be configured to allow voltage monitoring for a defined period before resetting the system, providing more accurate power management.

Typical Application Circuit

A typical application circuit for the MAX6340UK32+T is shown in the figure below. This circuit uses a standard three-pin adjuster to set the threshold voltage to the desired value. The reset signal from the MAX6340UK32+T is then sent to the system through the reset switch and output pin.The circuit includes an internal oscillator that generates a pulse signal to periodically monitor the supply voltage, and a push-pull output to indicate when the voltage exceeds or falls below the set threshold.

Summary

The MAX6340UK32+T is a popular power management IC suitable for both battery-powered and AC-supplied applications. It offers ultra-low power consumption, high accuracy and resolution, programmable threshold voltage and hysteresis, and independent push-pull outputs. Additionally, the device features adjustable reset periods of up to 980ms and a fixed 160ms reset delay.In conclusion, the MAX6340UK32+T is a versatile, highly integrated device for applications requiring precise voltage monitoring and protection. It is suitable for a wide range of applications, particularly portable, battery-operated systems, and benefits from its compact size, low power consumption, and easy-to-use features.

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