Overview
The TPS3808G33QDBVRQ1 is a low-quiescent current programmable-delay supervisory circuit produced by Texas Instruments. This device is designed to monitor system voltages ranging from 0.4 V to 5 V and is particularly suited for automotive and battery-powered applications. It features a high threshold accuracy and a very low typical quiescent current of 2.4 µA, making it ideal for power-sensitive designs. The TPS3808G33QDBVRQ1 is available in a small SOT-23 package and is fully specified over a temperature range of –40°C to +125°C, ensuring reliability in a wide range of operating conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | - |
| Pins | 6 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Threshold Voltage (VIT) | 3.3 V (3.07 V typical) | V |
| Quiescent Current (IDD) | 2.4 µA (typical) | µA |
| Reset Delay Time | 1.25 ms to 10 s (user-adjustable) | s |
| Threshold Accuracy | 0.5% (typical for VIT ≤ 3.3 V) | % |
| Manual Reset (MR) Input | Logic low (0.3 VDD) to assert reset | - |
| RESET Output | Open-drain | - |
Key Features
- Qualified for Automotive Applications (AEC-Q100 qualified)
- 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 1.2 V to 5 V and Adjustable Voltage Down to 0.4 V
- Manual Reset (MR) Input
- Open-Drain RESET Output
- Small SOT-23 Package and WSON Package (for some variants)
Applications
- DSP or Microcontroller Applications
- FPGA and ASIC Applications
- Automotive Vision Systems
- Automotive Radar Systems
- Battery-Powered Devices
Q & A
- What is the primary function of the TPS3808G33QDBVRQ1?
The primary function is to monitor system voltages and assert a reset signal when the voltage drops below a preset threshold or when the manual reset pin is asserted.
- What is the typical quiescent current of the TPS3808G33QDBVRQ1?
The typical quiescent current is 2.4 µA.
- How can the reset delay time be adjusted?
The reset delay time can be adjusted by connecting the CT pin to VDD using a resistor or to an external capacitor, allowing for a range from 1.25 ms to 10 s.
- What is the operating temperature range of the TPS3808G33QDBVRQ1?
The operating temperature range is –40°C to +125°C.
- Is the TPS3808G33QDBVRQ1 qualified for automotive applications?
- What type of package is the TPS3808G33QDBVRQ1 available in?
- How accurate is the threshold voltage of the TPS3808G33QDBVRQ1?
- Can the TPS3808G33QDBVRQ1 be used in battery-powered applications?
- What is the function of the manual reset (MR) input?
- What type of output does the RESET pin have?
