MAX6426UK33+T

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Power Management Integrated Circuit (PMIC) are used in a broad range of applications and are increasing in complexity as the capabilities of semiconductor chips grow. As a result, a wide range of PMIC components are available, each with its own specific application field and working principles. One such component is the MAX6426UK33+T power supervisor, an ultra-low power supervisor with Voltage Supervisor (VS). The MAX6426UK33+T is mainly intended for use in low-power applications, where a slim design space and cost-efficiency are key considerations.

The MAX6426UK33+T is part of Maxim integrated’s Ultra-Low-Power (ULP) Supervisors family and provides a wide range of features and benefits. It is capable of high-accuracy voltage monitoring of up to four different regulated or standby voltage supplies. The MAX6426UK33+T also offers a power-on reset (POR) that ensures a valid power supply during critical system initialization and start-up. Additionally, it provides two open-drain interrupt indicators to inform the user when the monitored supply voltages exceed specified thresholds. The MAX6426UK33+T also includes an incremental window watchdog to reset the system periodically if no valid system events occur.

The MAX6426UK33+T is fully compatible with a variety of microcontrollers including the Atmel AVR and PIC processors. It operates using a supply voltage of 1.65V to 5.5V and has an operating temperature range of -40°C to +85°C. The MAX6426UK33+T has a typical startup time of less than 150ms. It has an input threshold accuracy voltage range of ±0.75% and an offset voltage of only 30mV .

The MAX6426UK33+T provides several benefits to end users. It enables a slim design space by using onboard pushbutton reset, watchdog and voltage monitoring functions. It is designed to minimize power consumption and reduce PCB area for cost-efficient applications. Overall, the MAX6426UK33+T is an extremely versatile, multi-featured power supervisor, ideal for use in a variety of low-power applications.

The primary application field of the MAX6426UK33+T is low-power systems including consumer electronics, wireless communications, and automotive devices. It is also suitable for other industrial applications such as IoT, medical, security and industrial automation. These applications will benefit from the device’s high accuracy, minimal power consumption and small footprint.

The MAX6426UK33+T provides a range of features to ensure a reliable and consistent power supply to different systems. These features include an adjustable reset and interrupt threshold, voltage supervisor delay and watchdog timer. The reset and interrupt thresholds are set using external resistors, the voltage supervisor can be disabled for sleep mode operation and the watchdog timer can be enabled for safety critical applications. In addition, the device has an active-low reset output and power-good output indicator to ensure a valid power supply for critical system initialization.

The working principle of the MAX6426UK33+T is based on the undervoltage lockout (UVLO) method. When the input voltage drops below the reset or interrupt threshold voltage, the device enters an active state, thus resetting the system and preventing any further operation. At the same time, the fault condition is indicated through the open drain interrupt pins and a power-good signal is given on the power-on reset output pin. The reset output is also active when the input voltage is above the reset threshold and provides a valid power-on reset for the microcontroller.

To sum up, the MAX6426UK33+T is a highly efficient, power-conserving power supervisor designed for use in a variety of low-power systems. Its small form factor and cost efficiency make it a suitable choice for applications that require reliable power monitoring with low power consumption. Moreover, its features and working principles ensure dependable operation in a vast range of applications conditions to keep power supply stable and secure.

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