TPS3828-33QDBVRQ1
Compact supervisory ICs for processor monitoring in automotive applications
Manufacturer： ti
series introduction
# TPS3828 - 33QDBVRQ1 Product Series Introduction
## 1. Overview
The TPS3828 - 33QDBVRQ1 is a highly reliable and feature - rich product series designed for use in automotive and other demanding applications. It belongs to the family of voltage supervisors, which play a crucial role in ensuring the proper operation of electronic systems by monitoring the power supply voltage and taking appropriate actions when the voltage deviates from the desired range.
## 2. Key Features
### 2.1 Automotive - Grade Quality
- **AEC - Q100 Qualified**: This product is qualified to the AEC - Q100 standard, which is the automotive industry's stress - test qualification for integrated circuits. It means that the TPS3828 - 33QDBVRQ1 has undergone rigorous testing to ensure its reliability and performance in the harsh automotive environment, including temperature variations, vibration, and electrical noise.
- **High - Temperature Operation**: It can operate over a wide temperature range, typically from - 40°C to 125°C. This makes it suitable for use in automotive under - hood applications where temperatures can be extremely high.
### 2.2 Precise Voltage Monitoring
- **Fixed Threshold Voltage**: The "33" in the part number indicates a fixed threshold voltage of 3.3V. This means that the device is designed to monitor the power supply voltage and trigger an action when the voltage drops below 3.3V. The threshold voltage has a high level of accuracy, ensuring reliable operation of the system.
- **Low - Voltage Detector**: It acts as a low - voltage detector, constantly monitoring the power supply. When the voltage falls below the preset threshold, it can generate a reset signal to reset the connected microcontroller or other digital circuits, preventing data corruption and system malfunctions.
### 2.3 Adjustable Time - Out Period
- **External Capacitor Control**: The time - out period of the reset signal can be adjusted using an external capacitor. This allows designers to customize the reset duration according to the specific requirements of their application. For example, in systems that require a longer time to initialize, a larger capacitor can be used to increase the reset time.
### 2.4 Low Power Consumption
- **Quiescent Current**: The TPS3828 - 33QDBVRQ1 has a very low quiescent current, typically in the microampere range. This low power consumption is beneficial for battery - powered applications or systems where power efficiency is a critical concern. It helps to extend the battery life and reduce the overall power consumption of the system.
### 2.5 Small Package Size
- **DBV Package**: It comes in a small DBV (WSON) package, which is a space - saving option. The small package size makes it suitable for use in applications with limited board space, such as automotive infotainment systems, engine control units, and other compact electronic devices.
## 3. Applications
### 3.1 Automotive Electronics
- **Engine Control Units (ECUs)**: In ECUs, the TPS3828 - 33QDBVRQ1 can monitor the power supply voltage to ensure the stable operation of the microcontroller and other critical components. A sudden drop in voltage can cause incorrect engine control, leading to poor performance or even engine failure. The voltage supervisor can prevent such issues by resetting the system when the voltage is low.
- **Automotive Infotainment Systems**: These systems often contain multiple processors and memory devices. The TPS3828 - 33QDBVRQ1 can protect these components from voltage fluctuations, ensuring smooth operation of features such as navigation, audio, and video playback.
Images for reference
SOT-23-5, SC-74A
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