TPS3305-18DGN PMIC - Supervisors by Texas Instruments

The TPS3305-18DGN is a voltage supervisor and reset IC manufactured by Texas Instruments. It is designed to monitor power supply voltages and provide a reset signal to microcontrollers and other digital devices when the supply voltage falls below a specified threshold. This ensures that the system operates reliably and prevents erratic behavior during power-up or power-down conditions.

Key Features:

1. Voltage Monitoring: The TPS3305-18DGN monitors a supply voltage range, typically around 1.8V, making it suitable for low-voltage applications. It ensures that the monitored voltage remains within acceptable limits.

2. Reset Output: The device provides a reset output signal that is asserted when the supply voltage drops below the threshold. This output is typically active low and can be used to reset microcontrollers or other digital logic devices.

3. Debounce Time: The TPS3305-18DGN includes a built-in delay (or debounce) time for the reset signal, which helps to prevent false triggering during brief voltage fluctuations. This delay can be configured to suit the application requirements.

4. Low Power Consumption: The IC is designed to operate with low power consumption, making it ideal for battery-powered devices and energy-efficient applications.

5. Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, ensuring reliability in various environmental conditions.

6. Package Type: The TPS3305-18DGN is available in a small, surface-mount package (DGN), which is suitable for compact designs and helps save board space.

7. Applications: This voltage supervisor is commonly used in microcontroller-based systems, automotive electronics, industrial control systems, and any application where reliable power monitoring and reset functionality are critical.

Electrical Characteristics:

• Supply Voltage: The device typically operates from a supply voltage of 1.8V to 5.5V.
• Reset Threshold Voltage: The reset threshold is set to trigger at a specific voltage level, ensuring that the reset signal is generated at the appropriate time.
• Output Drive Capability: The reset output can drive a certain amount of current, allowing it to interface directly with other components in the system.

Conclusion:

The TPS3305-18DGN from Texas Instruments is a robust and reliable voltage supervisor and reset IC that plays a crucial role in ensuring the stability and proper functioning of electronic systems. Its combination of low power consumption, configurable reset timing, and wide operating temperature range makes it an excellent choice for a variety of applications in modern electronics.