Overview
The TPS3825-33DBVRG4 is a voltage monitor with a watchdog timer from Texas Instruments, designed primarily for circuit initialization and timing supervision in DSP and processor-based systems. This component ensures proper system reset and monitoring during power-on and power-down sequences. It is part of the TPS382x family, which offers various configurations to suit different application requirements.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage Supervision Range | 2.5 V, 3 V, 3.3 V, 5 V |
| Threshold Voltage | 2.93 V for TPS3825-33DBVRG4 |
| Reset Output | Active-low, active-high, and open-drain options |
| Watchdog Timer | 200 ms and 1.6 s options |
| Supply Current | 15 μA (typical) |
| Package | 5-pin SOT-23 |
| Temperature Range | −40°C to 85°C |
| Manual Reset Input | Available (pull low to force a reset) |
Key Features
- Power-on reset generator with fixed delay times (200 ms or 25 ms)
- Manual reset input for forcing a reset
- Reset output available in active-low, active-high, and open-drain configurations
- Watchdog timer to monitor system activity
- Ultra-low power consumption (15 μA typical)
- No external components required for operation
- Internal voltage divider sets the fixed-sense threshold voltage
Applications
- DSPs, microcontrollers, or microprocessors
- Industrial equipment
- Programmable controls
- Automotive systems
- Portable and battery-powered equipment
- Intelligent instruments
- Wireless communications systems
- Notebook and desktop computers
Q & A
- What is the primary function of the TPS3825-33DBVRG4?
The primary function is to provide circuit initialization and timing supervision, ensuring proper system reset during power-on and power-down sequences.
- What are the available reset output configurations for the TPS3825-33DBVRG4?
The reset output is available in active-low, active-high, and open-drain configurations.
- What is the typical supply current of the TPS3825-33DBVRG4?
The typical supply current is 15 μA.
- What is the temperature range for the TPS3825-33DBVRG4?
The temperature range is −40°C to 85°C.
- Does the TPS3825-33DBVRG4 require external components for operation?
No, it does not require external components for operation.
- What are the watchdog timer options for the TPS3825-33DBVRG4?
The watchdog timer options are 200 ms and 1.6 s.
- What is the package type for the TPS3825-33DBVRG4?
The package type is a 5-pin SOT-23.
- What is the threshold voltage for the TPS3825-33DBVRG4?
The threshold voltage is 2.93 V.
- Can the TPS3825-33DBVRG4 be used in automotive systems?
- Is the TPS3825-33DBVRG4 compliant with EU RoHS regulations?
