Overview
The TPS3820-50QDBVRQ1 is a voltage monitor with a watchdog timer from Texas Instruments, designed for circuit initialization and timing supervision in DSP and processor-based systems. This device is part of the TPS382x-xx-Q1 family, which is AEC-Q100 qualified, making it suitable for automotive and industrial applications. It operates over a temperature range of -40°C to 125°C and provides essential functions such as power-on reset, manual reset, and watchdog timer capabilities.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | 5-Pin SOT-23 | SOT-23 (DBV) |
| Supply Voltage Range | Monitored supply voltage | 2.5 V, 3 V, 3.3 V, 5 V |
| Threshold Voltage (VIT-) | Negative-going input threshold voltage | 4.49 V to 4.64 V (for 5V option) |
| Power-on Reset Delay | Fixed delay time | 25 ms (for TPS3820-xx-Q1) |
| Watchdog Timer | Time-out period | 200 ms or 1.6 s (depending on the device variant) |
| Reset Output | Type of reset output | Active-low, active-high, or open-drain |
| Manual Reset Input | Manual reset capability | Yes, pull low to force a reset |
| Supply Current | Typical supply current | 15 μA |
| Temperature Range | Operating temperature range | -40°C to 125°C |
| ESD Protection | ESD classification | Exceeds 2000 V per MIL-STD-883, Method 3015 |
Key Features
- AEC-Q100 Qualified: Meets automotive stress test qualification standards for integrated circuits.
- Supply Voltage Supervision: Monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- Power-on Reset: Generates a reset signal when the supply voltage rises above 1.1 V.
- Manual Reset Input: Allows for manual reset by pulling the MR pin low.
- Watchdog Timer: Available in variants with watchdog timers that require periodic triggering to avoid a reset signal.
- Reset Output Options: Offers active-low, active-high, and open-drain reset output configurations.
- Low Supply Current: Typical supply current of 15 μA.
- High ESD Protection: Exceeds 2000 V per MIL-STD-883, Method 3015.
Applications
- Automotive Systems: Suitable for automotive DSPs, microcontrollers, and microprocessors.
- Industrial Equipment: Used in industrial control systems and programmable controls.
- Portable and Battery-Powered Equipment: Ideal for devices requiring low power consumption and reliable voltage monitoring.
- Intelligent Instruments: Applied in various intelligent instruments and wireless communication systems.
Q & A
- What is the primary function of the TPS3820-50QDBVRQ1?
The primary function is to provide circuit initialization and timing supervision, particularly for DSP and processor-based systems.
- What are the monitored supply voltage ranges for this device?
The device monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- What is the power-on reset delay for the TPS3820-xx-Q1 devices?
The power-on reset delay is 25 ms for the TPS3820-xx-Q1 devices.
- Does the TPS3820-50QDBVRQ1 have a watchdog timer?
Yes, the TPS3820-xx-Q1 devices include a watchdog timer that must be periodically triggered to avoid a reset signal.
- What types of reset outputs are available for this device?
The device offers active-low, active-high, and open-drain reset output configurations.
- What is the typical supply current of the TPS3820-50QDBVRQ1?
The typical supply current is 15 μA.
- What is the operating temperature range for this device?
The operating temperature range is -40°C to 125°C.
- Is the TPS3820-50QDBVRQ1 AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified, making it suitable for automotive applications.
- What is the ESD protection level of the TPS3820-50QDBVRQ1?
The device exceeds 2000 V per MIL-STD-883, Method 3015.
- Can the TPS3820-50QDBVRQ1 be used in industrial equipment?
Yes, it is suitable for use in industrial equipment and programmable controls.
