Overview
The TPS3808G18DRVR is a low-quiescent current supervisory circuit produced by Texas Instruments. This device is part of the TPS3808 family, designed to monitor system voltages and assert a RESET signal when the voltage drops below a preset threshold or when the manual reset (MR) pin is driven low. The TPS3808G18DRVR is particularly suited for battery-powered applications due to its very low typical quiescent current of 2.4 µA and high threshold accuracy of 0.5% typical for voltages up to 3.3 V. It is available in small SOT-23 and 2-mm × 2-mm WSON packages, making it ideal for compact designs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS3808G18DRVR |
| Package Type | WSON (DRV), 6 pins |
| Operating Temperature Range | -40°C to 125°C |
| Quiescent Current (Typical) | 2.4 µA |
| Monitored Voltage (Typical) | Adjustable, 0.9 V to 5 V |
| Reset Threshold Accuracy | 0.5% typical for VIT ≤ 3.3 V |
| Reset Delay Time | Programmable: 1.25 ms to 10 s |
| Output Driver Type / Reset Output | Active-low, Open-drain |
| VCC (Min/Max) | 1.8 V / 6.5 V |
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
- Temperature range: –40°C to 125°C
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 TPS3808G18DRVR?
The typical quiescent current is 2.4 µA.
- What is the operating temperature range of the TPS3808G18DRVR?
The operating temperature range is -40°C to 125°C.
- How can the reset delay time be adjusted on the TPS3808G18DRVR?
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 can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor.
- What types of packages are available for the TPS3808G18DRVR?
The device is available in SOT-23 and 2-mm × 2-mm WSON packages.
- What is the threshold accuracy of the TPS3808G18DRVR for voltages up to 3.3 V?
The threshold accuracy is 0.5% typical for voltages up to 3.3 V.
- Does the TPS3808G18DRVR support manual reset?
- What is the output type of the RESET signal?
The RESET output is active-low and open-drain.
- What is the maximum VCC for the TPS3808G18DRVR?
The maximum VCC is 6.5 V.
- Is the TPS3808G18DRVR suitable for battery-powered applications?
- What are some common applications of the TPS3808G18DRVR?
