MAX8213ACSE+T

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Power management integrated circuits (PMICs) are chips used to regulate and manage power for a variety of applications. PMICs, for example, are used to manage and monitor power in battery-operated products such as mobile phones, tablets, laptops and wearable electronics. Supervisors are one particular type of PMIC designed to protect the connected device and its circuits by constantly monitoring the current consumption, temperature, and other vital operations. The MAX8213ACSE+T is a specialized supervisor specifically designed to provide support and protection for I2C, SMBus, and A2D interfaced systems.

Overview of MAX8213A Supervisory IC

The MAX8213A is a System-in-Package (SiP) device ideally suited for mobile applications. The low-power supervisor ensures system safety in the event of an overvoltage or circuit fault. It offers a load switch for systems where the shutdown mode input is controlled by an external supply voltage, activity, temperature, or other variable. The built-in serial EEPROM and watchdog timer ensure safe operation and reliabilty.

MAX8213ACSE+T Application Field

The MAX8213ACSE+T supervisor is best suited for mobile and other battery-powered applications where even the slightest increase in temperature can have serious consequences. The supervisor provides several features such as reset assert and de-assert, power-on reset and reset to system power source. These features are necessary to ensure reliable and quality operation for a variety of products, including:

• Smartphones
• Tablets
• Laptops
• Wearable electronics
• Personal digital assistants (PDAs)
• GPS devices

MAX8213ACSE+T Working Principle

The MAX8213ACSE+T supervisor chips feature a on/off switch that is configured and monitored through the I2C, SMBus, and A2D interfaces. The chip operates on a charge-pump voltage, allowing the supervisor to have a very low operating current of typically 150µA. This makes the chip efficient and suitable for regulating power in small portable devices that have low power supplies.

The MAX8213ACSE+T supervisor also provides an interrupt feature that can be used to detect when an overvoltage condition occurs. The chip uses a voltage comparator to detect when the regulated voltage surpasses a certain threshold value and then automatically triggers an interrupt signal to the system to alert the processor of the overvoltage situation. The supervisor continues to operate in order to prevent further damage to the device or its sensitive components.

The supervisor further features serial EEPROM that can store up to 64 bytes of data. This data can be accessed through the I2C/SMBus interface for storing and retrieving preset configuration data as well as for logging system events which can be used for troubleshooting purposes. It also has a watchdog timer that upon timing-out can assert or de-assert reset to the system processor in order to counter a hang-up situation.

Conclusion

The MAX8213ACSE+T supervisor is a low power, versatile System-in-Package (SiP) device that provides superior protection against overvoltage and system faults. Its several features such as serial EEPROM data storage, interrupt, and watchdog timer make it suitable for a variety of mobile, battery-powered applications. With the MAX8213ACSE+T, designers can ensure that their systems are safe and reliable with minimal effort or cost.

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