TPS3808G09DBVTG4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TPS3808G09DBVTG4 Application Field and Working Principle

The TPS3808G09DBVTG4 is a microprocessor supervisory circuit manufactured by Texas Instruments. This IC is specifically designed for high-performance microprocessor system applications, providing an advanced battery-backup supply and brown-out reset circuitry. It is small in size and low power consumption, making it suitable for a wide range of applications from embedded systems to walkie-talkies. This article will explore the application field and working principle of the TPS3808G09DBVTG4.

Application Field

The TPS3808G09DBVTG4 is ideally suited for applications where a robust, reliable, and low-cost microprocessor supervisor is required. This IC is most often used in microprocessor-based systems and embedded systems with applications such as industrial, instrumentation, and telecommunications. The supervisor is also applicable in walkie-talkies, due to its small size and low power consumption.

The TPS3808G09DBVTG4 offers additional system security and uninterrupted supply of power, as well as a brown-out reset system for added safety of the system. This supervisor is also RoHS compliant, making it safe to use in a variety of commercial and industrial applications.

Working Principle

The TPS3808G09DBVTG4 operates on 4.2V - 6.5V supplied from a main power supply and has an additional supply for a battery backup on the VCC2 terminal. This IC provides a reset signal on the RESET output when the supply voltage rises above the reset input threshold, or when power is restored after a power failure event. It also generates an active-low RESET signal when the supply voltage drops below the reset voltage threshold.

The TPS3808G09DBVTG4 features a programmable reset time-out counter that can be programmed to any combination of the five reset timeout periods. This allows the supervisor to accommodate a wide range of reset timing needs. The RESET output is also open-drain and requires an external pull-up resistor.

Additionally, the TPS3808G09DBVTG4 has a low-battery-detection circuit that monitors the voltage of the battery supply and generates an asserted reset signal when the voltage of the battery supply goes below the selected voltage threshold. This allows the microprocessor to execute a safe shutdown without data loss in case of a power failure.

Conclusion

The TPS3808G09DBVTG4 microprocessor supervisory circuit manufactured by Texas Instruments is designed for applications requiring a low-cost, reliable, and robust microprocessor supervisor. It operates on four supply voltages ranging from 4.2V - 6.5V, and features a reset timeout counter and low battery detection circuit. This IC is suited to many applications, ranging from embedded systems to walkie-talkies.

The specific data is subject to PDF, and the above content is for reference