Overview
The TPS3825-50DBVR is a voltage supervisor and reset IC produced by Texas Instruments. It is part of the TPS382x family, designed to provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. This device ensures proper system reset by monitoring the supply voltage and asserting the RESET signal when the voltage drops below a specified threshold. The TPS3825-50DBVR features a manual reset input, watchdog timer options, and both active-low and active-high reset outputs.
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 | |
| Reset Output | Active-low and active-high | |
| Manual Reset Input | Available | |
| Watchdog Timer | 200 ms (typical) | |
| Delay Time | 200 ms (typical) | |
| Supply Current | 15 µA (typical) | |
| Input Threshold Voltage (VIT-) | 4.49 V to 4.64 V for 5V option |
Key Features
- Power-on reset generator with a fixed delay time of 200 ms.
- Manual reset input to force a reset regardless of the supply voltage or watchdog timer state.
- Reset output available in active-low and active-high configurations.
- Supply voltage supervision range: 2.5 V, 3 V, 3.3 V, and 5 V.
- Watchdog timer option with a time out of 200 ms.
- Low supply current of 15 µA (typical).
- 5-pin SOT-23 package.
- Operating temperature range: -40°C to 85°C.
Applications
- DSP and processor-based systems.
- Notebook and desktop computers.
- Embedded systems requiring power-on reset and voltage supervision.
- Industrial control systems.
- Automotive electronics.
Q & A
- What is the primary function of the TPS3825-50DBVR?
The primary function is to provide circuit initialization and timing supervision, ensuring proper system reset by monitoring the supply voltage.
- What are the available reset output configurations for the TPS3825-50DBVR?
The reset output is available in both active-low and active-high configurations.
- Does the TPS3825-50DBVR have a manual reset feature?
Yes, it has a manual reset input that allows an external logic signal to force a reset.
- What is the typical delay time for the power-on reset generator?
The typical delay time is 200 ms.
- What is the supply current of the TPS3825-50DBVR?
The supply current is typically 15 µA.
- What is the operating temperature range of the TPS3825-50DBVR?
The operating temperature range is -40°C to 85°C.
- Does the TPS3825-50DBVR require external components for operation?
No, it does not require external components as it has a fixed-sense threshold voltage set by an internal voltage divider.
- What are the available supply voltage supervision ranges for the TPS3825-50DBVR?
The device can supervise supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- Is the TPS3825-50DBVR suitable for use in automotive electronics?
Yes, it is suitable for use in automotive electronics due to its robust specifications and operating range.
- What package type is the TPS3825-50DBVR available in?
The device is available in a 5-pin SOT-23 (DBV) package.
