MAX6830YDUT+T

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Introduction

The MAX6830YDUT+T is a high-performance I2C-bus/SMBus System Supervisory IC (PMIC - Supervisors) with integrated fault protection, system reset, and an adjustable microprocessor reset delay. It integrates fault sensing and system reset functions in a single chip to provide comprehensive system protection. This IC is the ideal choice for systems that require clean power during runtime and upon reboot or system failure. The IC is designed for use in high-end computers, communications systems, and industrial equipment.

Features

The MAX6830YDUT+T features a built-in voltage monitor, power-on reset (POR) output, and an adjustable reset delay. The integrated level shifter provides an I2C/SMBus host-processor interface. The reset delay offers between 1ms and 16ms for reset generation on power-up and on detection of faults. Its wide operating range of 1.8V to 5.5V is ideal for applications where very low power, ultra-small board area, or both, are critical. It can detect supply brownouts, overvoltage or overcurrent problems, and reset the system. Fault detection is done by comparing input voltages to two programmable threshold levels. It is pin-compatible with similar devices.

Applications

The MAX6830YDUT+T provides a cost-effective and efficient solution for system supervisors and reset functions in a wide range of applications. These applications include Desktops, networking CPUs, and server motherboards, industrial automation, USB charging ports, embedded µController systems, cellular modems, and mobile phone accessories, automotive systems, and more. It is also suitable for handheld batteries, solar-powered systems, portable medical devices, and other small form-factor applications.

Working Principle

The MAX6830YDUT+T is able to detect faults by monitoring two external voltages. The two voltage inputs, Vcore1 and Vcore2, are compared to user programmable trip points, VTH1 and VTH2. If the voltage on either input exceeds its trip point, the MAX6830YDUT+T outputs a reset signal. The reset can be a short pulse, usually referred to as a Power-On-Reset, or a longer pulse, usually referred to as a WDER Reset. This depend on the settings of the WORDER pin. The adjustable reset delay, which is adjustable from 0.9ms to 16ms, ensures that the reset pulse is generated after, and not during, power-up or fault detection.

Conclusion

The MAX6830YDUT+T is an ideal solution for system supervisors and reset functions in a wide range of applications such as high-end computers, communications systems, industrial equipment, and more. It is able to detect supply brownouts, overvoltage or overcurrent problems, and reset the system by monitoring two external voltages. The adjustable reset delay ensures that the reset pulse is generated after, and not during, power-up or fault detection.

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