MAX6808SA46+

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A well-rounded understanding of the MAX6808SA46+ PMIC-Supervisor is crucial for its application in the field. In this article, the working principles and application fields of this device will be explored.

Introduction to MAX6808SA46+

MAX6808SA46+ is a low-voltage, low-power, precision micropower supervisor IC. It\'s used for system power management, providing critical reset and monitoring functions for microprocessor-based systems. It uses a precision band-gap reference to provide a power-on reset, and it also provides an active low power detect output. The MAX6808SA46+ offers a reset output and interrupt output, which are capable of supporting a wide rage of processor designs, from the smallest 8-bit microprocessor to the most demanding 64-bit processor.

Working Principle

The MAX6808SA46+ is a voltage-sensitive reset device. It is designed to detect power-on reset and low-voltage reset conditions, with an operating voltage range from 1V up to 5.5V. The device senses both power-on reset and low-voltage reset conditions and provides an active low output, enabling proper system startup and reset control. The MAX6808SA46+ additionally has an active undervoltage monitoring pin (VCCMON) for monitoring system voltage, allowing for flexible reset time qualification.

The MAX6808SA46+ has an active low power detect (PD) output to indicate when VCC is less than a preset threshold voltage, which typically occurs at power-up. This output can be used to detect abnormal VCC and activate an over-current limit or initiate a board level shutoff. When VCC rises and exceeds the preset threshold, the PD output automatically returns to its low state. The MAX6808SA46+ also has an interrupt (INT) output to indicate when VCC exceeds a preset threshold. The INT output can be used as an interrupt request to the processor, alerting the processor to the start of a power-up sequence.

The MAX6808SA46+ also has several watchdog timer modes of operation. These watchdog timer modes can be used to detect and shut off the system when predetermined conditions are exceeded. The MAX6808SA46+ also has an active low output, enabling it to control a number of power control components, such as system power-down controllers. The device also has an active low power detect output, used to detect abnormal power-on reset conditions. It can also be used to initiate a board level shutoff.

Application Fields

The MAX6808SA46+ is optimal for a wide range of PMIC applications, intended for use in a variety of microcontroller and microprocessor-based systems. It is particularly useful in harsh environments where extreme temperatures, shock, or vibration are present. It can be used to provide precision power control when required to maintain the system operating parameters within specified limits.

The MAX6808SA46+ can be used in automotive systems, battery-powered embedded systems, portable medical devices, consumer audio-visual products, and industrial installations. It is also a popular choice for design engineers creating low-power, high-precision, and battery-backed products. Furthermore, the MAX6808SA46+ offers an 8-pin DIP package which can be used in a limited PCB space.

In summary, the MAX6808SA46+ is a low-power, low-voltage, PMIC-Supervisor. It is designed to provide precise supply monitoring with active low power detect and interrupt outputs. The device also provides watchdog timer functions, and is suitable for a wide range of applications, from extreme environmental conditions to consumer-level electronics. Engineers in need of a precise, low-cost, micropower supervisor should consider the MAX6808SA46+ for their design.

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