TPS3103H20DBVRG4

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The TPS3103H20DBVRG4 is a low-power, low-voltage reset supervisor designed to monitor the power supplies\' voltages used in microprocessors, DSPs, and FPGAs. It integrates highly accurate voltage monitors and reset functions, with optional programmable interrupt output and delay times. It also provides power up and down (Brown-In/Brown-Out) enabling and disabling capability. The device is capable of repairing short-circuit and open-circuit power supply faults as well as exceeding of maximum or minimum supply threshold values at rising and falling edges notably.

Applications

The TPS3103H20DBVRG4 is suitable for medium- to low-power systems, such as automotive, consumer, industrial, and medical applications. Its capabilities make it suitable for a wide range of applications, such as portable electronics, battery-powered systems, and systems requiring improved power management. It can also be used in applications requiring load detection, open load fault detection, short-circuit fault detection, or reset functions.

Working Principle

The TPS3103H20DBVRG4 functions as a level-detected reset supervisor, offering highly accurate voltage monitoring and reset capabilities on power up and down. It features a programmable reset threshold voltage, which is composed of an undervoltage threshold voltage and a hysteresis voltage that is adjustable up to 70%. It has a power on reset (POR) circuit with 70 ms delay time, with optional programmable reset delay time length. It also has an overvoltage reset function with a preset threshold voltage level, adjustable hysteresis voltage, and optional programmable reset delay time.

In addition, it has an adjustable supply enable/disable logic, allowing the application to enable or disable the supply voltage on specific conditions. It also has a power down enable/disable logic, allowing the application to enable or disable the power down sequence for specific conditions. When enabled, a reset pulse is issued when the voltage is below the predetermined power down threshold voltage.

The reset logic is designed for a high-level reset, which uses an external pull-up resistor and a capacitor for reset synchronization. The TPS3103H20DBVRG4 can also be used with an open-drain reset configuration and features low quiescent current with power-down mode.

Conclusion

The TPS3103H20DBVRG4 is a low-power, low-voltage reset supervisor with a wide range of applications. It provides highly accurate voltage monitoring, reset functions, and programmable delay times and reset threshold voltages. Its features are suitable for automotive, consumer, industrial, and medical applications. Furthermore, it has adjustable supply enable/disable logic, adjustable power down enable/disable logic, and a capable of resetting on short-circuit and open-circuit power supply faults.

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