MAX6750KA32/V+T

PMIC, short for power-management integrated circuits, are chips used to enable electrical systems to start up, shut down, and perform other power management related tasks. Supervisors, a category of PMICs, help monitor the power supply to an electronic system, as well as control system reset and provide user-programmable timeout functions. Of all PMICs, the MAX6750KA32/V+T is a particularly reliable, low-power supervisor IC with extensive features for flexible system power management. In this article, we\'ll discuss the application fields and working principle of the MAX6750KA32/V+T.

The MAX6750KA32/V+T targets low-voltage, power-managed microprocessor systems and it can also be used for analog and digital system power management. It has an internal voltage detector that can detect a single battery, as well as selectable reset thresholds and timeout limits. These features make it ideal for battery-operated and power-sensitive systems, including industrial instrumentation and process control, streaming media, environmental sensors, building security and access control systems, embedded computers and networking, and other embedded systems.

The device has two 8-bit programmable timers: one for accurate timekeeping and the other for timing- specific power management profiles. These in combination with sequencing functions such as reset delaying, delay on power-up, soft start, and timed-reset, allow the MAX6750KA32/V+T to configure itself to the given system\'s power requirements. It also provides flexibility in system powering options with its different input voltages and power-saving features, featuring both external and internal voltage switches.

Next, let\'s take a look at how the MAX6750KA32/V+T works. In a general setup, all power management circuitry is connected to a system, consisting of power source, logic dual supply, and the MAX6750KA32/V+T itself. The device detects the system voltage and the signals coming from power source, while the logic dual supply is used to provide power to the chip’s integrated circuits. In a system with multiple power sources, the MAX6750KA32/V+T turns them on and off sequentially, and will only switch from one power source to the other when that is necessary.

The device continuously samples the input supply, and executes on-chip logic to generate the system reset, VCC, and output sequencing signals. Single-bit logic programming is used to configure the voltage reset, and the sequence of power on/off for system reset, logic supply, and power switch timing. It implements many features, including a manual reset button, a power good pin, an adjustable and selectable reset, and a voltage-sensitive reset.

The MAX6750KA32/V+T always monitors the power sources, and if either of them go below the predetermined threshold, it will immediately alert the microcontroller or logic circuit. In combination with the on-chip logic, the device can also recover gracefully from power loss and other critical events.

In short, the MAX6750KA32/V+T is a reliable, low-power supervisor IC with extensive features for flexible system power management. It has various application fields, such as industrial instrumentation and process control, streaming media, environmental sensors, building security and access control systems, embedded computers and networking, and other embedded systems. It has two 8-bit programmable timers for accurate time-keeping, as well as power-saving features, features such as reset delaying, delay on power-up, soft start, and timed-reset that are easy to configure according to the system\'s power requirements. Last but not least, the device monitors the power sources continuously, and can alert the microcontroller or logic circuit if either of them go below the pre-set threshold.