Overview
The TPS3808G15QDBVRQ1 is a low-quiescent current, programmable-delay microprocessor supervisory circuit manufactured by Texas Instruments. This device is 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. It is particularly suited for automotive applications due to its robust specifications and small package size.
The TPS3808G15QDBVRQ1 operates over a wide temperature range of –40°C to +125°C and is available in a 6-pin SOT-23 package. It features a precision reference that achieves high threshold accuracy, making it reliable for various system monitoring tasks.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | - |
| Pins | 6 | - |
| Operating Temperature Range | –40°C to +125°C | °C |
| Input Supply Range | 1.7 V to 6.5 V | V |
| Quiescent Current (Typical) | 2.4 μA | μA |
| Threshold Voltage (VIT) | 1.5 V (Typical: 1.4 V) | V |
| Threshold Accuracy (Typical) | 0.5% | % |
| Reset Delay Time | 1.25 ms to 10 s (user-adjustable) | s |
| RESET Output | Open-drain | - |
Key Features
- Qualified for Automotive Applications
- 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 Applications due to low quiescent current
Q & A
- What is the primary function of the TPS3808G15QDBVRQ1?
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 (MR) pin is driven low.
- What is the operating temperature range of the TPS3808G15QDBVRQ1?
The operating temperature range is –40°C to +125°C.
- What is the typical quiescent current of the TPS3808G15QDBVRQ1?
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 for a 300-ms delay, leaving the CT pin open for a 20-ms delay, or connecting an external capacitor to the CT pin for a user-defined delay between 1.25 ms and 10 s.
- What is the threshold voltage accuracy of the TPS3808G15QDBVRQ1?
The threshold voltage accuracy is typically 0.5% for VIT ≤ 3.3 V.
- What package options are available for the TPS3808G15QDBVRQ1?
The device is available in a 6-pin SOT-23 package.
- Is the TPS3808G15QDBVRQ1 suitable for automotive applications?
- What types of applications can benefit from the low quiescent current of the TPS3808G15QDBVRQ1?
Battery-powered applications can significantly benefit from the low quiescent current.
- How does the manual reset (MR) input function?
The manual reset (MR) input asserts the RESET signal when driven to a logic low.
- What is the nature of the RESET output?
The RESET output is an open-drain output.
