MAX6865UK18D5S+T

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The MAX6865UK18D5S+T belongs to the PMIC – Supervisors family. Its main application fields include computing servers, human interface devices (HIDs), industrial equipment and industrial controls, infotainment systems, internet of things, medical equipment, tablets, as well as wearables and mobile phone handsets. It is a high-performance supervisor and watchdog integrated circuit (IC) with power-on sequencing for monitoring circuits with up to two reset outputs.

The MAX6865UK18D5S+T features low supply SOT-23 current consumption and a high-accuracy watch time-out circuit. It is designed to detect supply voltages that are above, below or in-between four factory-programmable thresholds, providing reset or power-off signals in case of a power-supply fault. It also greatly simplifies power-on-reset (POR) sequencing and provides high-accuracy microprocessor watch-dog functions with a factory-programmable time-out period.

The MAX6865UK18D5S+T features a watchdog timer combined with a low-voltage/high-voltage supervisor for system reset/power-off applications. The watchdog circuit comprises an oscillator and a manual-reset (MR) input for resetting the watchdog timer. The watchdog timer is factory-programmable from a few milliseconds to over 500 seconds in steps of 0.001 second. The input supply can range from 1.5V to 15V with internal logic levels compatible with battery-powered systems.

The MAX6865UK18D5S+T is suitable for +12V and +5V systems with a single reset output, and for +24V systems with dual reset outputs. The output can be used to reset the microprocessor or to power down the system during a power Fault. The dual reset outputs are designed to turn off all system supply voltages simultaneously. The reset output will remain ON until the power supply voltage drops below a programmable threshold, as determined by the VF pin.

The MAX6865UK18D5S+T monitors the power supply and provides two power-off (reset) outputs, one active-low and one active-high. The active-low output provides digital control, while the active-high output provides analog control. Both outputs will be activated in the same conditions, but with different timing depending on the power supply voltage, temperature, and other parameters. The watchdog timer will only be enabled as long as the supply voltage is above the specified threshold level, and in a specified temperature range.

The MAX6865UK18D5S+T monitors the power supply, providing reset outputs with a precise reset time. The reset circuitry of the MAX6865UK18D5S+T is designed to guarantee a fixed minimum reset pulse width (Vreset pulse width) of 100 ms. This ensures that the microprocessor or other equipment has enough time to recognize the reset signal and to start the microprocessor\'s reset sequence. The Vstartup pin allows the user to select the startup voltage level. This allows the user to select the correct startup level to minimize false reset events.

The reset circuitry also includes independent reset outputs for both the processor and power supply. The processor reset output is active until the processor\'s reset is asserted. If a power supply fault occurs, the MAX6865UK18D5S+T will automatically initiate a power-down sequence. The MAX6865UK18D5S+T will maintain the power supply in a stable condition until the power fault is removed, and then release the processor reset. The processor reset output can be disabled by asserting the MAX6865UK18D5S+T\'s RESn pin.

The MAX6865UK18D5S+T also contains an internal clock generator with four options. These clock generators provide the precision timing pulses required by the microprocessor or other equipment to function correctly. The clock generator is powered by the system power supply, thus avoiding an external clock source requirement.

Overall, the MAX6865UK18D5S+T is an excellent supervisor IC designed to ensure reliable and precise monitoring of the system power supply. With its precise reset timing and independent reset outputs for both the processor and power supply, the MAX6865UK18D5S+T is an effective and reliable power supply supervisor.

The specific data is subject to PDF, and the above content is for reference