TPS3851G25EDRBR

The TPS3851G25EDRBR is a voltage supervisor integrated circuit (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, power-down, or brownout conditions.

Key Features:

1. Voltage Monitoring: The TPS3851G25EDRBR monitors a supply voltage and provides a reset output when the voltage drops below a predetermined threshold. The specific version, "G25," indicates that it has a fixed reset threshold of 2.5V.

2. Reset Output: The device features an active-low reset output (RESET) that goes low when the monitored voltage falls below the threshold. This output remains low for a specified duration after the voltage returns to normal, ensuring that the system has stabilized before resuming operation.

3. Adjustable Delay: The TPS3851 includes an adjustable reset delay time, allowing designers to customize the time it takes for the reset signal to go high after the supply voltage has stabilized. This is crucial for ensuring that all components have time to initialize properly.

4. Low Supply Current: The IC is designed to operate with low supply current, making it suitable for battery-powered applications where power efficiency is critical.

5. Wide Operating Voltage Range: The device can operate over a wide range of supply voltages, typically from 1.0V to 5.5V, making it versatile for various applications.

6. Temperature Range: The TPS3851G25EDRBR is rated for operation over an extended temperature range, typically from -40°C to +125°C, which is ideal for automotive and industrial applications.

7. Small Package Size: The IC is available in a compact 5-pin SOT-23 package, which is suitable for space-constrained designs.

8. Applications: Common applications for the TPS3851G25EDRBR include microcontroller reset circuits, power management systems, automotive electronics, and any system requiring reliable voltage monitoring and reset functionality.

Electrical Characteristics:

• Reset Threshold Voltage: 2.5V (fixed)
• Supply Voltage Range: 1.0V to 5.5V
• Reset Active Time: Adjustable, typically in the range of milliseconds
• Supply Current: Low, typically in the microamp range

Conclusion:

The TPS3851G25EDRBR from Texas Instruments is a reliable and efficient voltage supervisor that provides essential reset functionality for digital systems. Its combination of low power consumption, adjustable delay, and wide operating range makes it an excellent choice for a variety of applications, ensuring that devices operate correctly under varying power conditions.