TPS3825-50DBVR - Texas Instruments

The TPS3825-50DBVR by Texas Instruments is a highly reliable supervisory circuit designed to monitor power supplies in digital systems. It provides a crucial function by ensuring system integrity through voltage supervision, which is essential for maintaining the performance and reliability of electronic systems. This device is especially well-suited for portable and battery-powered applications due to its low power consumption and small form factor.

With a fixed-sense threshold voltage of 5.0V, the TPS3825-50DBVR is optimized for systems that operate at standard 5V power supply levels. It features a built-in watchdog timer that can be disabled if not required, offering flexibility in system design. The watchdog timer serves as an independent system monitor, which helps in recovering from software lockups and other malfunctions.

The TPS3825-50DBVR comes in a compact SOT-23-5 package, making it ideal for space-constrained applications. Its active-low, open-drain RESET output remains asserted for a minimum of 200ms after the supply voltage becomes higher than the threshold, providing ample time for the system to stabilize before resuming operation. This feature ensures that the system microcontroller or processor starts in a known state, which is critical for system reliability.

Key features of the TPS3825-50DBVR include:

• Power-on reset generator with fixed delay time of 200ms
• Manual reset input for system-level reset capability
• Watchdog timer for system fault detection
• Supply voltage supervision range: 5.0V
• Low supply current of 15 µA (typical) for power-sensitive applications
• Temperature range: -40°C to +85°C, suitable for industrial applications
• 5-pin SOT-23 (DBV) package for compact footprint

Applications for the TPS3825-50DBVR are diverse and include computer systems, embedded systems, battery-powered equipment, and other electronic devices that require reliable voltage monitoring. Its robust feature set ensures that the TPS3825-50DBVR is an excellent choice for designers looking to enhance system reliability and safeguard against voltage-related issues.

By integrating the TPS3825-50DBVR into your product design, you can achieve a higher level of protection for your electronic systems, thereby reducing the risk of data loss, hardware damage, and system downtime due to unexpected power supply fluctuations.