TPS3851H33EQDRBRQ1

The TPS3851H33EQDRBRQ1 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. Here’s a detailed description of its features and specifications:

Key Features:

1. Voltage Monitoring: The TPS3851H33EQDRBRQ1 monitors a supply voltage and generates a reset signal when the voltage drops below a predetermined threshold. This is crucial for ensuring that digital systems operate reliably and do not enter an undefined state during power fluctuations.

2. Fixed Reset Threshold: The device has a fixed reset threshold of 3.3V, making it suitable for applications that require a stable reset signal for 3.3V logic systems.

3. Active-Low Reset Output: The reset output is active-low, meaning that it goes low when the monitored voltage is below the threshold. This output can be connected directly to the reset pins of microcontrollers or other digital devices.

4. Reset Timeout: The TPS3851H33EQDRBRQ1 features a built-in reset timeout period, which ensures that the reset signal remains active for a specified duration after the supply voltage returns to normal levels. This helps to ensure that the system has stabilized before resuming normal operation.

5. Low Supply Current: The device operates with a low supply current, making it suitable for battery-powered applications where power efficiency is critical.

6. Wide Operating Voltage Range: The TPS3851H33EQDRBRQ1 can operate over a wide voltage range, typically from 1.0V to 5.5V, allowing it to be used in various applications with different supply voltages.

7. Temperature Range: The device is rated for operation over an extended temperature range, making it suitable for automotive and industrial applications.

8. Small Package Size: The TPS3851H33EQDRBRQ1 is available in a compact package (e.g., VQFN), which is advantageous for space-constrained designs.

Applications:

• Microcontroller Reset: Ideal for resetting microcontrollers in embedded systems when the supply voltage drops.
• Automotive Electronics: Suitable for automotive applications where voltage monitoring is critical for system reliability.
• Industrial Control Systems: Used in industrial equipment to ensure proper operation during power fluctuations.
• Consumer Electronics: Can be implemented in consumer devices to enhance reliability and prevent malfunction during power issues.

Conclusion:

The TPS3851H33EQDRBRQ1 from Texas Instruments is a robust and reliable voltage supervisor and reset IC that provides essential functionality for ensuring the proper operation of digital systems in various applications. Its combination of low power consumption, fixed reset thresholds, and compact packaging makes it an excellent choice for engineers designing reliable electronic systems.