MAX6385XS45D6-T

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The MAX6385XS45D6-T PMIC - Supervisors offers compact, low quiescent current monitoring and reset for a wide range of microprocessors and other logic systems. It provides an excellent power-on reset (POR) protection as well as warning and reset functions for slow power-up conditions. The combination of features makes it ideal for systems with low power-up times or intensive monitoring requirements.

The MAX6385XS45D6-T combines the power-on reset (POR) and power supply monitoring functions in one package. The POR function monitors the system power supply voltage and generates a fast active-high (reset) signal when the system power supply drops below a user-defined reset threshold voltage. This reset signal can be used with a microcontroller, a digital logic circuit, or a dedicated reset controller or supervisor. The reset signal also will initiate a fast system shut-down and restart when periodic voltage summations occur.

The MAX6385XS45D6-T’s power supply monitoring provides users with the ability to reset a system in the event of a slow power-up condition or a fault in a power supply, such as a brown-out or an over-temperature. When enabled, the power supply monitor continually monitors the system power-supply voltage and activates a reset signal if the voltage stays below a user-defined voltage threshold for more than a user-defined time period, commonly five milliseconds. The reset signal can also be initiated on any voltage overshoot.

The MAX6385XS45D6-T reduces the area, cost and power consumed compared to other solutions and maximizes battery life. The low 1.1µA quiescent current during standby makes it ideal for minimal standby-power applications. The MAX6385XS45D6-T also has two operating temperature ranges available with no change in functionality. It offers a broad VDD operating range from 2.0V to 5.5V and works with low power-on reset thresholds of 1.4V and 2V.

The MAX6385XS45D6-T also provides excellent accuracy and offset for monitoring low device and circuit voltages, including microprocessor core voltage rails. The device has an excellent 0.5% accuracy at VDD = 3.3V and temperature range of -40°C to +125°C and a wider range of -55°C to +150°C.

The MAX6385XS45D6-T is easy to use and requires no external components to enable the reset function. It provides an active-low (reset) signal to the system logic whenever the monitored voltage drops below the programmed reset threshold. This reset signal is latched until it is cleared either manually by cycling the power switch or by software. This makes it ideal for application in consumer electronics, industrial/medical process control, and communications applications.

The MAX6385XS45D6-T’s low power consumption, small size, and advanced features make it a great choice for several types of applications. Its excellent accuracy and offset makes it well-suited for monitoring the core voltage rails of microprocessors and other logic systems. In addition, its low quiescent current and broad operating temperature range make it a great choice for minimal power-standby applications and a wide range of industrial/medical/communications applications.

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