Overview
The TPS3808G125DBVTG4 is a microprocessor supervisory circuit from Texas Instruments, designed to monitor system voltages and provide a reliable reset signal when the voltage drops below a preset threshold. This device is part of the TPS3808 family, which offers a range of fixed and adjustable threshold voltages. It is particularly suited for applications requiring high threshold accuracy and low quiescent current, making it ideal for battery-powered systems.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOT-23 (DBV), 6 pins |
| Operating Temperature Range | –40°C to 125°C |
| Threshold Voltage Range | 0.4 V to 5 V |
| Reset Delay Time | 1.25 ms to 10 s (user-adjustable) |
| Quiescent Current | 2.4 µA typical |
| Threshold Accuracy | 0.5% typical for VIT ≤ 3.3 V |
| RESET Output | Open-drain |
| Manual Reset Input | Available |
Key Features
- Power-on reset generator with adjustable delay time: 1.25 ms to 10 s
- Very low quiescent current: 2.4 µA typical
- High threshold accuracy: 0.5% typical for VIT ≤ 3.3 V
- Fixed threshold voltages for standard voltage rails from 0.9 V to 5 V and adjustable voltage down to 0.4 V
- Manual reset (MR) input
- Open-drain RESET output
- Small SOT-23 and 2-mm × 2-mm WSON packages
Applications
The TPS3808G125DBVTG4 is well-suited for a variety of applications, including battery-powered devices, embedded systems, and any system requiring precise voltage monitoring and reset functionality. Its low quiescent current makes it particularly suitable for power-sensitive designs.
Q & A
- What is the primary function of the TPS3808G125DBVTG4?
The primary function is to monitor system voltages and assert a reset signal when the voltage drops below a preset threshold. - What is the operating temperature range of the TPS3808G125DBVTG4?
The operating temperature range is –40°C to 125°C. - How can the reset delay time be adjusted?
The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. - What is the typical quiescent current of the TPS3808G125DBVTG4?
The typical quiescent current is 2.4 µA. - What is the threshold accuracy of the TPS3808G125DBVTG4?
The threshold accuracy is 0.5% typical for VIT ≤ 3.3 V. - Does the TPS3808G125DBVTG4 have a manual reset input?
Yes, it has a manual reset (MR) input. - What type of package is the TPS3808G125DBVTG4 available in?
It is available in SOT-23 and 2-mm × 2-mm WSON packages. - Is the TPS3808G125DBVTG4 suitable for battery-powered applications?
Yes, it is well-suited for battery-powered applications due to its low quiescent current. - What is the range of threshold voltages available for the TPS3808 family?
The threshold voltage range is from 0.4 V to 5 V. - What is the status of the TPS3808G125DBVTG4 regarding obsolescence?
It is scheduled for obsolescence and will be discontinued by the manufacturer.
