MAX6388XS38D4-T

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Power Management IC (PMIC), also known as Supervisors, is used as power management for a variety of applications. The MAX638XS38D4-T offers a wide range of performance, from ultra-low-power undervoltage monitoring to brownout detection. It provides a complete system power solution including dual power supply control and temperature control, among others.

The MAX638XS38D4-T is a supervisor device that monitors a variety of conditions and generates a system reset when required. It features adjustable threshold and polarity of reset pulse, and also includes a watchdog timer that can generate an interrupt or reset signal.

The MAX638XS38D4-T is equipped with a range of features that improve the robustness of system performance, including brownout detection, an overriding reset signal, an adjustable resetdelay, an accurate power supply monitor, and a temperature monitoring circuit that can reset the system in the event of overtemperature. It also features a short loop detection that shuts down the system in case of a short-circuit on a specific system pin.

The MAX638XS38D4-T offers a very low quiescent current, standby current, and reset hold current. It also offers programmable power-on reset (POR) delay and reset feedback accuracy. The device comes in a tiny 8-pin TDFN package, making it suitable for space-constrained applications.

Applications of the MAX638XS38D4-T range from consumer electronics to industrial use, including: cell phones, tablets, cameras, printers, remote sensors, digital signage, ATE systems, robots, medical equipment, IoT, automation equipment, and motor control. These devices perform power management, monitoring and control functions, such as undervoltage detection, power supply voltage/current monitoring, short loop detection, brownout protection, and power on reset.

The MAX638XS38D4-T features a low-power design with a typical operating current of 2.5 µA, a bias current of 8 µA, and a reset active current of 10 µA. The operating voltage range is from 3V to 12V, and a single reset pulse is generated when the power supply voltage goes below a user-specified threshold. The reset delay adjusts from 15 ms to 750ms, which deactivates the reset by default.

In addition, the MAX638XS38D4-T features a reset status pin, allowing the system to discreetly monitor the reset events and identify if the reset was requested by the on-chip supervisor or by some other component in the system. This is especially useful for safety critical applications. The MAX638XS38D4-T is a cost-effective and reliable solution for undervoltage monitoring and system reset management.

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