Overview
The TPS3808G125DBVT is a microprocessor supervisory circuit produced by Texas Instruments. This device is designed to monitor system voltages and provide a power-on reset function, making it ideal for various applications requiring precise voltage monitoring and low power consumption. The TPS3808G125DBVT features a very low typical quiescent current of 2.4 μA, which is particularly beneficial for battery-powered devices. It is available in small SOT-23 and 2-mm × 2-mm WSON packages, ensuring it can be integrated into compact designs while maintaining full functionality over a temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (6 pins) | |
| Operating Temperature Range | –40°C to 125°C | °C |
| Supply Voltage Range | 1.7 V to 6.5 V | V |
| Quiescent Current | 2.4 μA (typical) | μA |
| Threshold Voltage Accuracy | 0.5% (typical for VIT ≤ 3.3 V) | % |
| Reset Output | Open-drain, Active Low | |
| Reset Delay Time | Adjustable (1.25 ms to 10 s) | s |
| Manual Reset Input | Yes |
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
- DSP or microcontroller applications
- Notebook and desktop computers
- PDAs and hand-held products
- Portable and battery-powered products
- FPGA and ASIC applications
Q & A
- What is the typical quiescent current of the TPS3808G125DBVT?
The typical quiescent current is 2.4 μA.
- What is the operating temperature range of the TPS3808G125DBVT?
The operating temperature range is –40°C to 125°C.
- What types of packages are available for the TPS3808G125DBVT?
The device is available in SOT-23 and 2-mm × 2-mm WSON packages.
- 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 threshold voltage accuracy of the TPS3808G125DBVT?
The threshold voltage accuracy is 0.5% typical for VIT ≤ 3.3 V.
- Does the TPS3808G125DBVT have a manual reset input?
Yes, it has a manual reset (MR) input.
- What type of reset output does the TPS3808G125DBVT have?
The reset output is open-drain and active low.
- What are some common applications for the TPS3808G125DBVT?
Common applications include DSP or microcontroller applications, notebook and desktop computers, PDAs and hand-held products, portable and battery-powered products, and FPGA and ASIC applications.
- Is the TPS3808G125DBVT suitable for battery-powered devices?
Yes, it is well-suited for battery-powered applications due to its very low quiescent current.
- What is the supply voltage range for the TPS3808G125DBVT?
The supply voltage range is from 1.7 V to 6.5 V.
