Maxim Integrated MAX6315US30D2+T Low-Power Microprocessor (µP) Supervisory Circuit

The MAX6315US30D2+T is a compact, high-precision microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a crucial safeguard for µPs by ensuring that all system voltages are within acceptable limits, thereby enhancing system reliability and preventing data corruption during power-up, brownout conditions, and power-down.

This supervisory circuit features a factory-trimmed reset threshold voltage of 3.0V, making it well-suited for 3.3V-powered systems. The MAX6315US30D2+T is capable of holding the µP in the reset state until the system voltage reaches a stable and accurate operating level and maintains the reset output for approximately 140ms after the voltage exceeds the reset threshold. This built-in delay ensures a proper system reset, allowing the power supply and processor to stabilize before normal operation resumes.

The device comes in a compact, 4-pin SOT-143 package, which is ideal for space-constrained applications. Moreover, it has a low supply current of only 1µA (typical), which is particularly beneficial for battery-operated devices where power efficiency is critical.

Key features of the MAX6315US30D2+T include:

• Factory-Set Reset Threshold Voltage: 3.0V
• Low Power Consumption: 1µA (typical) supply current
• Reset Timeout: 140ms (min) reset pulse width
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT-143
• Supply Voltage Range: 1.2V to 5.5V
• No External Components Required

The Maxim Integrated MAX6315US30D2+T is ideal for use in a wide range of applications, including portable/battery-powered equipment, embedded systems, computers, and other digital systems that require a reliable reset function. Its ease of integration, minimal power consumption, and small footprint make it an excellent choice for designers looking to enhance system stability and ensure a robust µP reset mechanism.

With its precision voltage monitoring and low power usage, the MAX6315US30D2+T is a critical component for maintaining the integrity of electronic systems, providing peace of mind for both designers and users alike.