TPS3306-33QDRQ1
Automotive dual processor supervisory circuits with power-fail protection
Manufacturer： ['rochester', 'analog-devices', 'ti']
series introduction
# TPS3306 - 33QDRQ1 Product Series Introduction
## 1. Overview
The TPS3306 - 33QDRQ1 is a highly reliable and efficient voltage supervisor product series designed specifically for automotive and other high - reliability applications. Voltage supervisors play a crucial role in ensuring the stable operation of electronic systems by monitoring the power supply voltage and taking appropriate actions when the voltage deviates from the normal range.
## 2. Key Features
### 2.1 Automotive - Grade Reliability
- **AEC - Q100 Qualified**: The TPS3306 - 33QDRQ1 is compliant with the AEC - Q100 standard, which is the automotive industry's stress - test qualification for integrated circuits. This qualification ensures that the device can withstand the harsh environmental conditions typically encountered in automotive applications, such as extreme temperatures, high humidity, and mechanical vibrations.
- **High - Quality Packaging**: It comes in a QDRQ1 package that provides excellent protection against physical damage and environmental factors. The package is designed to be easily integrated into automotive printed circuit boards (PCBs), ensuring a reliable and long - lasting connection.
### 2.2 Precise Voltage Monitoring
- **Fixed Threshold Voltage**: The TPS3306 - 33QDRQ1 has a fixed threshold voltage of 3.3V. This precise voltage monitoring capability allows it to accurately detect when the power supply voltage drops below or rises above the specified level. For example, in a system where the nominal power supply voltage is 3.3V, the supervisor can quickly detect any voltage fluctuations and trigger the appropriate response.
- **Low Hysteresis**: The device features low hysteresis, which means that the difference between the turn - on and turn - off threshold voltages is small. This ensures that the supervisor can respond quickly and accurately to voltage changes, minimizing the risk of false triggering.
### 2.3 Fast Response Time
- **Quick Detection**: The TPS3306 - 33QDRQ1 has a fast response time, enabling it to detect voltage anomalies within a very short period. When the power supply voltage falls below the threshold voltage, the supervisor can generate an active - low reset signal within microseconds. This rapid response is crucial for protecting sensitive electronic components from damage due to under - voltage conditions.
### 2.4 Low Power Consumption
- **Quiescent Current**: The device has a very low quiescent current, typically in the microampere range. This low power consumption makes it suitable for battery - powered applications, as it minimizes the drain on the battery. Even in long - term standby or sleep modes, the TPS3306 - 33QDRQ1 consumes very little power, helping to extend the battery life of the system.
## 3. Applications
### 3.1 Automotive Electronics
- **Engine Control Units (ECUs)**: In automotive ECUs, the TPS3306 - 33QDRQ1 can monitor the power supply voltage to ensure the stable operation of the microcontroller and other critical components. A sudden voltage drop in the ECU can lead to incorrect engine control, which may result in poor performance or even engine damage. The supervisor can detect such voltage drops and reset the system to prevent these issues.
- **Infotainment Systems**: Automotive infotainment systems rely on a stable power supply to provide a seamless user experience. The TPS3306 - 33QDRQ1 can be used to monitor the power supply voltage of the display, audio amplifier, and other components in the infotainment system. If the voltage drops below the threshold, the supervisor can reset the system to avoid glitches or malfunctions.
### 3.2
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