MAX6865UK18D2S+T

MAX6865UK18D2S+T is a supervisor product from Maxim Integrated. This product is integrated in the PMIC - Supervisors field. Its primary purpose is to monitor and control system voltage, select power on reset delay and detect brown-out condition. Its main functions include undervoltage lockout, power-on reset or detection, system reset, temperature supervisory, charger & battery backup control, internal oscillator and watchdod timer.

The MAX6865UK18D2S+T has a wide operating range of -40 °C to +125 °C, making it suitable for use in a variety of applications. It has low power consumption, low quiescent current and low VDD, meaning it is suitable for battery-operated applications. Moreover, it offers a wide variety of flexible options available, such as a wide range of reset delay, Watchdog timer and voltage monitor thresholds.

Working Principle

The MAX6865UK18D2S+T operates based on a reset comparator that compares the voltage of the system with a preset threshold. The voltage can be supervised by adjusting the preset threshold. The system will power-up once the voltage exceeds a preset threshold. The voltage is monitored and when it falls below the preset threshold, the reset comparator will trigger, sending a reset signal.

In addition, the device also monitors the current temperature by comparing it to a preset high and low temperature limit, and will output a reset or temperature alert signal when the temperature LTI or HTI are exceeded. An internal timer is also available to provide system watchdog timer function. The internal timer will reset the system when the monitoring period of the timer is exceeded.

The MAX6865K18D2S+T also provides battery management, allowing the system to switch over to a battery backup power supply when the main power supply goes down. The battery voltage is monitored and when the voltage falls below a preset limit, the system will switch to battery backup mode. An internal oscillator can also be used to control multiple devices and to provide periodic event monitoring.

In summary, the MAX6865K18D2S+T is a powerful supervisor product from Maxim Integrated that provides a variety of system voltage, temperature and watchdog timer functions. Its low quiescent current and wide operating temperature range make it a suitable choice for many applications.