Overview
The TPS3820-50DBVR is a supervisory circuit designed and manufactured by Texas Instruments. This device is part of the TPS382x family, which provides circuit initialization and timing supervision, primarily for DSP and processor-based systems. It ensures reliable system operation by monitoring the power supply voltage and providing a watchdog timer and manual reset capabilities. The TPS3820-50DBVR is ideal for applications requiring precision voltage monitoring and low power consumption, making it suitable for portable and battery-powered electronics, as well as industrial and consumer electronics.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | SOT-23 (DBV) | 5 pins |
| Operating Temperature Range | −40°C to 85°C | |
| Supply Voltage Supervision Range | 2.5 V, 3 V, 3.3 V, 5 V | |
| Watchdog Timer Timeout | 200 ms (typical) | |
| Power-on Reset Delay Time | 25 ms (typical) | |
| Supply Current | 15 µA (typical) | |
| Reset Output | Active-low, push-pull | |
| Manual Reset Input | Available |
Key Features
- Power-on reset generator with a fixed delay time of 25 ms.
- Manual reset input to force a reset regardless of the supply voltage or watchdog timer state.
- Reset output available in active-low, push-pull configuration.
- Watchdog timer with a timeout period of 200 ms.
- Supply voltage supervision for 2.5 V, 3 V, 3.3 V, and 5 V systems.
- Low supply current of 15 µA (typical).
- 5-pin SOT-23 package.
- Operating temperature range of −40°C to 85°C.
Applications
- DSPs, microcontrollers, or microprocessors.
- Industrial equipment and programmable controls.
- Automotive systems.
- Portable and battery-powered equipment.
- Intelligent instruments and wireless communications systems.
- Notebook and desktop computers.
Q & A
- What is the primary function of the TPS3820-50DBVR?
The TPS3820-50DBVR is a supervisory circuit that provides circuit initialization and timing supervision, primarily for DSP and processor-based systems.
- What is the package type and pin count of the TPS3820-50DBVR?
The TPS3820-50DBVR comes in a 5-pin SOT-23 (DBV) package.
- What are the available supply voltage supervision ranges for the TPS3820-50DBVR?
The device can supervise supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- What is the typical watchdog timer timeout period for the TPS3820-50DBVR?
The watchdog timer timeout period is typically 200 ms.
- Does the TPS3820-50DBVR have a manual reset input?
- What is the typical supply current of the TPS3820-50DBVR?
The typical supply current is 15 µA.
- What is the operating temperature range of the TPS3820-50DBVR?
The operating temperature range is −40°C to 85°C.
- What types of reset outputs are available for the TPS3820-50DBVR?
The TPS3820-50DBVR has an active-low, push-pull reset output.
- What are some common applications for the TPS3820-50DBVR?
- Does the TPS3820-50DBVR require external components for operation?
