Overview
The TPS3813I50DBVR is a member of the TPS3813xxx family of supervisory circuits manufactured by Texas Instruments. These circuits are designed to provide circuit initialization and timing supervision, primarily for Digital Signal Processors (DSPs) and processor-based systems. During power-on, the RESET signal is asserted when the supply voltage (VDD) exceeds 1.1V, and it remains active until VDD rises above the threshold voltage (VIT). The device includes an internal timer that delays the deassertion of the RESET signal to ensure a proper system reset, with a typical delay time of 25ms. This supervisory circuit is particularly useful in safety-critical applications due to its window-watchdog feature with programmable delay and window ratio.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 6-Pin SOT-23 (DBV) |
| Operating Temperature Range | –40°C to 85°C |
| Supply Current | 9µA (typical) |
| Power-on Reset Delay Time | 25ms (typical) |
| Threshold Voltages (VIT) | 2.5V, 3V, 3.3V, and 5V |
| Reset Output | Open-drain |
| Watchdog Timer | Programmable delay and window ratio |
Key Features
- Window-watchdog with programmable delay and window ratio
- 6-Pin SOT-23 package
- Supply current of 9µA (typical)
- Power-on reset generator with a fixed delay time of 25ms
- Precision supply voltage monitor (VIT): 2.5V, 3V, 3.3V, and 5V
- Open-drain reset output
- Temperature range: –40°C to 85°C
Applications
- Active Antenna System mMIMO (AAS)
- Storage area network
- Electricity meters
- Safety critical systems
- Infusion pump
- HVAC controller
Q & A
- What is the primary function of the TPS3813I50DBVR? The primary function is to provide circuit initialization and timing supervision for DSPs and processor-based systems.
- What is the typical power-on reset delay time? The typical power-on reset delay time is 25ms.
- What are the available threshold voltages (VIT) for this device? The available threshold voltages are 2.5V, 3V, 3.3V, and 5V.
- What type of package does the TPS3813I50DBVR come in? It comes in a 6-Pin SOT-23 package.
- What is the operating temperature range of the TPS3813I50DBVR? The operating temperature range is –40°C to 85°C.
- Does the TPS3813I50DBVR have a watchdog timer? Yes, it has a window-watchdog timer with programmable delay and window ratio.
- What is the typical supply current of the TPS3813I50DBVR? The typical supply current is 9µA.
- What type of reset output does the TPS3813I50DBVR have? It has an open-drain reset output.
- In what types of applications is the TPS3813I50DBVR commonly used? It is commonly used in safety-critical systems, active antenna systems, storage area networks, electricity meters, infusion pumps, and HVAC controllers.
- Do external components need to be used with the TPS3813I50DBVR for basic operation? No external components are required for basic operation.
