TPS3103E15DBVTG4

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PMIC - Supervisors

Texas Instrument’s TPS3103E15DBVTG4 is a +3.3V-out Supervisor intended for use in low-power, supervisory applications. The device offers precise voltage monitoring and is available with an adjustable reset threshold, power-fail warning, manual reset, and active-low reset output. This voltage supervisor outputs a low voltage when the input is above or below the reset threshold. In addition, the device is available in a space-saving SOT23 package. It has a wide operating temperature range and works at a maximum power dissipation of 2.3W at 85°C.

Applications

TPS3103E15DBVTG4 is used in small medium-sized applications, including battery-powered systems, microprocessors with 5V power supplies including peripherals, personal computers/notebooks motherboards, automotive applications and telecom/wireless networks. This voltage supervisor solution fulfills the requiremnts of high-precision power supply reset, eliminating the need to guess during design. The main application areas are:

• Industrial Automation equipment
• Notebook PCs and Servers
• Telecom and Wireless Networks
• DSPs and Other Microprocessors
• Autonomous Batteries/Solar Power

Working Principle

TPS3103E15DBVTG4 is biased on an external power supply and provides an active output when its input voltage is within the specified range. When the input voltage is below the reset threshold (V_th), the output goes low, telling the control unit to reset. The device monitors any voltage from 2.0V to 3.6V. The reset threshold is adjustable from 1.2V to 3.4V, providing for a wide variety of applications. The reset threshold of the TPS3103E15DBVTG4 is typically 100mV, ensuring quick and reliable reset. The internal resistor divider gives the device a very wide range of reset threshold and power-fail warning threshold options. The power-fail warning threshold is adjustable from 1.2V to 3.4V. Below the warning threshold, the output will de-assert, but the reset signal may or may not be activated yet. When the input voltage reaches the reset threshold, the reset signal is activated and the device will reset. The device has an active-low reset output, meaning the reset level is low when output is active. TPS3103E15DBVTG4 has an open-drain output, allowing for easy interfacing with other logic circuits. In addition, the device is equipped with a manual reset pin that will force the reset signal low regardless of the input voltage. This feature is especially useful for debugging and troubleshooting.

Features

Conclusion

In conclusion, TPS3103E15DBVTG4 is a 3-3V supervisory solution designed for use in low-power applications. It has a wide operation range, adjustable reset threshold, and power-fail warning output. It is used in various fields, such as industrial automation, notebook PCs, telecom, and wireless networks. With its open-drain output, adjustable power-fail warning threshold, and manual reset pin, this voltage supervisor is highly versatile and suitable for a variety of applications.

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