MAX696CPE+ Datasheet/PDFPMIC - Supervisors
Power management IC (PMIC) supervisors are important components for system-level power management and provide features such as power sequencing, protection from overvoltage, short-circuit and thermal events, as well as reset control, to ensure correct and reliable operation of the system’s power management devices. The Maxim Integrated MAX696CPE+ is a low-power and low-voltage PMIC supervisor IC with many features, making it ideal for embedded system applications. In this article, we will discuss the application fields and working principles of the MAX696CPE+ supervisor IC.
Application Fields
The MAX696CPE+ is a versatile device and can be used in a variety of applications, such as battery-backed equipment, implantable medical devices, automotive systems and other embedded systems that require protection from overvoltage, short-circuit and thermal events, such as drones and robots. The MAX696CPE+ can provide system-level power sequencing, protection from overvoltage, short-circuit and thermal events, reset control and enable/disable for is external voltage, current and temperature sensors.
The MAX696CPE+ features an extended temperature range and low voltage operation, making it ideal for embedded systems in harsh and/or high temperature environments. An integrated low-power driver and latch enable extended battery life. The device also features an adjustable watchdog timer with a wide range of time-out periods, and a power-on reset pin that can to turn off the internal power supply in order to protect the system.
Working Principle
The MAX696CPE+ is a single-chip solution for power sequencing, over-voltage protection, over-temperature protection, and reset control. It includes an innovative, fail-safe, dedicated reset controller and timer to provide reset signals to the system. The reset controller and timer monitor the system and issue reset signals once the system fails to respond within a predetermined period. This ensures that the system is never caught in a non-operational state.
The MAX696CPE+ also features a sophisticated over-voltage protection circuit to monitor input voltages for over-voltage events. The device can be configured for latching or non-latching, with the option of manual reset or system reset. Over-temperature protection is provided via an integrated temperature sensor, which monitors system temperature and issues a reset signal if the temperature exceeds the set trip point.
The MAX696CPE+ is designed to automatically switch on/off the external voltage, current, and temperature sensors as required to maintain low power consumption. The external voltage, current, and temperature sensors are automatically enabled and disabled when their values exceed or fall below their respective thresholds, allowing the device to make no unnecessary power-up/down cycles.
In summary, the MAX696CPE+ supervisor IC is an innovative, low-power and low-voltage PMIC supervisor IC with many features. It is suitable for embedded systems in harsh environments, and is capable of providing system-level power sequencing, protection from overvoltage, short-circuit and thermal events, reset control and enable/disable for is external voltage, current and temperature sensors.