TPS3851H25EDRBT

The TPS3851H25EDRBT 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 TPS3851H25EDRBT monitors a supply voltage and generates a reset signal when the voltage drops below a predetermined threshold. The specific version, "H25," indicates a reset threshold of 2.5V.

2. Reset Output: The IC 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 Reset Timeout: The reset timeout period can be adjusted using an external capacitor, allowing designers to customize the delay based on their application requirements.

4. Low Supply Current: The TPS3851H25EDRBT is designed for low power consumption, making it suitable for battery-operated devices and energy-efficient applications.

5. Wide Operating Voltage Range: The device operates over a wide input voltage range, typically from 1.0V to 5.5V, making it versatile for various applications.

6. Temperature Range: It is rated for operation over an extended temperature range, typically from -40°C to +125°C, ensuring reliability in harsh environments.

7. Small Package Size: The TPS3851H25EDRBT is available in a compact 5-pin SOT-23 package, which is ideal for space-constrained designs.

8. Applications: This voltage supervisor is commonly used in microcontroller-based systems, automotive electronics, industrial equipment, and consumer electronics, where reliable power management is critical.

Electrical Characteristics:

• Reset Threshold Voltage: 2.5V
• Reset Output Voltage: Active low
• Supply Current: Typically low, enhancing battery life in portable applications
• Reset Timeout Period: Adjustable via external components

Conclusion:

The TPS3851H25EDRBT from Texas Instruments is a robust and efficient voltage supervisor that provides essential monitoring and reset functionality for digital systems. Its combination of low power consumption, adjustable timeout, and wide operating range makes it an excellent choice for a variety of applications requiring reliable voltage supervision.