X40021V14-BT1

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PMIC - Supervisors

The X40021V14-BT1 is a supervisor IC (supervisory IC) used in several embedded devices today. It is particularly useful in applications that require precise reset delay timing and circuit monitoring for reliable system performance.

A supervisor IC is a specialized Integrated Circuit (IC) that monitors and controls various aspects of an embedded system. Supervisors monitor a range of values in a circuit and then actuate reset and other system functions based on conditions within the monitored environment.

The X40021V14-BT1 is widely used in cell phones, personal digital assistants (PDAs), and other handheld devices. It also operates in larger embedded systems such as servers, network routers, and wireless access points. This supervisor IC monitors ground, power supply, and Vin voltages to ensure system stability.

The X40021V14-BT1 also incorporates advanced reset delay timing and voltage mismatch detection features that provide greater system reliability. It provides overvoltage, undervoltage, and excess current protection and is available in a wide range of package options.

Programmable Time Delay

The X40021V14-BT1 implements a programmable reset timeout for monitoring rising and falling voltages. This allows for different timings to be used for reseting the system under various environmental conditions. The reset timeout period can be programmed from 0 sec to 255 sec.

The X40021V14-BT1 also provides the option for the reset output to be active for different times depending on the voltage. The reset timeout can be programmed to be either short or long. The short service interval is selected if the voltage is between 4.5V and 5.5V and the long service interval is triggered when the voltage is below 4.5V or above 5.5V.

Voltage Mismatch Protection

The X40021V14-BT1 also provides voltage mismatch protection. When the detection level is exceeded, the IC will issue a power-on reset signal. This keeps the system reset in case of any potential abnormality in the environment. It also gives the system time to detect an increase in power supply voltage and return to a steady-state.

Power-On Reset

The power-on reset (POR) feature of the X40021V14-BT1 is useful for system diagnostics. It is triggered whenever the supply voltage rises above a certain threshold. The POR output then remains low until the whole system is initialized properly.

Excess Current Protection

The X40021V14-BT1 also provides excess current protection. In the case of an overload or short circuit, the supervisor senses the excessive current and issues a reset signal. This prevents the system from further damage due to the high current.

Diagnostic Capability

The X40021V14-BT1 also features a diagnostic capability. This provides users with crucial status information about the system\'s current condition. This information can help in troubleshooting any system or functionality related issues as well as in verifying the proper setup of the system.

Package Options

The X40021V14-BT1 is available in both ceramic and plastic packages. The former has the smaller size and higher temperature range while the latter is the more efficient option in terms of cost and size. There are additional package options such as SOIC-8 and µMAX.

Conclusion

The X40021V14-BT1 is a versatile supervisor IC specifically designed for portable and embedded applications. It is a user friendly and cost-efficient solution and provides superior system monitoring and reliable operations. It is used in many portable and embedded applications today and is one of the most popular supervisor ICs available.

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