Overview
The TPS3808G01QDBVRQ1 is a low-quiescent current, programmable-delay supervisor IC produced by Texas Instruments. This component is designed for automotive and other applications where reliable power-on reset and voltage monitoring are crucial. It offers adjustable reset delay times and voltage thresholds, making it versatile for various system requirements.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (VDD) | 1.65 V to 6.5 V | |
| Quiescent Current (IDD) | 2.4 μA (typical) at VDD = 3.3 V | RESET not asserted, MR, RESET, CT open |
| Low-level Output Voltage (VOL) | 0.3 V at IOL = 0.4 mA (1.3 V ≤ VDD < 1.8 V) | |
| Power-up Reset Voltage (VPOR) | 0.8 V (max) at I_RESET = 15 μA | |
| Reset Delay Time | 1.25 ms to 10 s (adjustable) | |
| Operating Temperature Range | -40°C to 125°C | |
| Voltage Threshold Accuracy | -2% to 2% (typical) | VIT ≤ 3.3 V |
Key Features
- Adjustable reset delay time from 1.25 ms to 10 s using an external capacitor.
- Programmable voltage threshold from 0.405 V to 5 V using an external resistor divider.
- Very low quiescent current of 2.4 μA (typical) at VDD = 3.3 V.
- SENSE input for monitoring any system voltage with built-in hysteresis for smooth reset assertions.
- Operating temperature range from -40°C to 125°C.
Applications
The TPS3808G01QDBVRQ1 is suitable for a wide range of applications, including:
- Automotive systems: For reliable power-on reset and voltage monitoring in automotive electronics.
- Industrial control systems: To ensure proper system startup and operation in industrial environments.
- Consumer electronics: For devices requiring low power consumption and reliable reset functionality.
- Medical devices: Where precise voltage monitoring and reset capabilities are essential.
Q & A
- What is the primary function of the TPS3808G01QDBVRQ1? The primary function is to provide a power-on reset and voltage monitoring with adjustable delay times and thresholds.
- What is the range of supply voltage for the TPS3808G01QDBVRQ1? The supply voltage range is from 1.65 V to 6.5 V.
- How can the reset delay time be adjusted? The reset delay time can be adjusted using an external capacitor connected to the CT pin, allowing delays from 1.25 ms to 10 s.
- What is the quiescent current of the TPS3808G01QDBVRQ1? The quiescent current is typically 2.4 μA at VDD = 3.3 V.
- Can the voltage threshold be adjusted? Yes, the voltage threshold can be adjusted using an external resistor divider, allowing thresholds from 0.405 V to 5 V.
- What is the operating temperature range of the TPS3808G01QDBVRQ1? The operating temperature range is from -40°C to 125°C.
- How does the SENSE input work? The SENSE input monitors any system voltage and asserts a reset if the voltage drops below the set threshold, with built-in hysteresis for smooth reset assertions.
- What types of applications is the TPS3808G01QDBVRQ1 suitable for? It is suitable for automotive, industrial control, consumer electronics, and medical devices.
- Where can I find detailed specifications and documentation for the TPS3808G01QDBVRQ1? Detailed specifications and documentation can be found on the Texas Instruments website and through distributors like Mouser and TME.
- Is the TPS3808G01QDBVRQ1 automotive-qualified? Yes, the TPS3808G01QDBVRQ1 is automotive-qualified, making it suitable for use in automotive systems.
