Overview
The TPS3820-50DBVRQ1G4 is a voltage monitor with a watchdog timer from Texas Instruments, designed to provide circuit initialization and timing supervision primarily for DSP and processor-based systems. This device is part of the TPS382x-xx-Q1 family, which is AEC-Q100 qualified, ensuring reliability in automotive and industrial applications. It operates over a wide temperature range of –40°C to 125°C and is packaged in a compact 5-pin SOT-23 package.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package | 5-Pin SOT-23 | Compact package size: 2.90 mm × 1.60 mm |
| Temperature Range | –40°C to 125°C | Operating temperature range |
| Supply Voltage Range | 1.1 V to 5.5 V | Voltage range the device can monitor |
| Threshold Voltage (VIT–) | 4.49 V to 4.64 V (for 5V option) | Negative-going input threshold voltage for the 5V option |
| Reset Output | Active-low, Active-high, or Open-drain | Configurable reset output types |
| Watchdog Timer | 200 ms or 1.6 s | Available watchdog timer options |
| Manual Reset Input | Available | Manual reset pin to force a reset |
| Supply Current | 15 μA (Typical) | Low power consumption |
| ESD Protection | Exceeds 2000 V per MIL-STD-883, Method 3015 | High ESD protection level |
Key Features
- AEC-Q100 Qualified: Ensures reliability in automotive applications with temperature grade 1: –40°C to 125°C and ESD classification levels.
- Supply Voltage Supervision: Monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- Reset Output Options: Available in active-low, active-high, and open-drain configurations.
- Watchdog Timer: Options include 200 ms and 1.6 s watchdog timers to ensure system integrity.
- Manual Reset Input: Allows for manual reset by pulling the MR pin low.
- Low Power Consumption: Typical supply current of 15 μA.
- Compact Package: 5-pin SOT-23 package for space-efficient designs.
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 operating temperature range of the TPS3820-50DBVRQ1G4?
The operating temperature range is –40°C to 125°C.
- What are the available reset output configurations for this device?
The reset output can be configured as active-low, active-high, or open-drain.
- Does the TPS3820-50DBVRQ1G4 have a watchdog timer?
- How much current does the TPS3820-50DBVRQ1G4 typically consume?
The typical supply current is 15 μA.
- What is the package type and size of the TPS3820-50DBVRQ1G4?
The device is packaged in a 5-pin SOT-23 package, measuring 2.90 mm × 1.60 mm.
- What are the threshold voltages for the 5V option?
The negative-going input threshold voltage for the 5V option ranges from 4.49 V to 4.64 V.
- Is the TPS3820-50DBVRQ1G4 AEC-Q100 qualified?
- What is the purpose of the manual reset input (MR) pin?
The manual reset input (MR) pin allows for manual reset by pulling it low.
- What kind of ESD protection does the TPS3820-50DBVRQ1G4 offer?
The device offers ESD protection exceeding 2000 V per MIL-STD-883, Method 3015.
- In which types of systems is the TPS3820-50DBVRQ1G4 commonly used?
