TPS3431SQDRBRQ1

Product Overview

Category

The TPS3431SQDRBRQ1 belongs to the category of integrated circuits (ICs) and specifically falls under the family of voltage supervisors.

Use

This product is primarily used for monitoring and supervising the voltage levels in electronic systems. It ensures that the voltage remains within specified limits, providing protection against overvoltage or undervoltage conditions.

Characteristics

• Voltage supervision range: The TPS3431SQDRBRQ1 can monitor voltages ranging from 0.4V to 5.5V.
• Low quiescent current: It has a low power consumption of only 3µA, making it suitable for battery-powered applications.
• Adjustable threshold voltage: The device allows users to set the desired threshold voltage using external resistors.
• Power-on reset delay: It provides a programmable delay time to ensure stable operation during power-up.

Package

The TPS3431SQDRBRQ1 is available in a small 8-pin VSSOP package, which offers space-saving advantages and ease of integration into various circuit designs.

Essence

The essence of the TPS3431SQDRBRQ1 lies in its ability to accurately monitor voltage levels and provide reliable protection to electronic systems against voltage fluctuations.

Packaging/Quantity

The TPS3431SQDRBRQ1 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply voltage range: 1.2V to 6V
• Operating temperature range: -40°C to +125°C
• Threshold voltage accuracy: ±1%
• Power-on reset delay time: Programmable from 10ms to 640ms
• Quiescent current: 3µA (typical)

Detailed Pin Configuration

The TPS3431SQDRBRQ1 has the following pin configuration:

1. GND: Ground reference for the device.
2. VDD: Positive supply voltage input.
3. RESET: Active-low reset output.
4. MR: Manual reset input.
5. TH: Threshold voltage adjustment pin.
6. NC: No connection (unused pin).
7. NC: No connection (unused pin).
8. VOUT: Voltage output.

Functional Features

• Overvoltage and undervoltage detection: The TPS3431SQDRBRQ1 can detect when the monitored voltage exceeds or falls below the set threshold, triggering the reset output accordingly.
• Power-on reset: It ensures that the reset output remains active during power-up until the voltage stabilizes within the specified range.
• Manual reset: The device provides a manual reset input to override the automatic reset function.
• Adjustable threshold voltage: Users can adjust the threshold voltage by connecting external resistors to the TH pin, allowing customization based on specific application requirements.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various electronic systems.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered applications.
• Programmable power-on reset delay ensures stable operation during power-up.
• Small package size facilitates space-saving integration into circuit designs.

Disadvantages

• Limited number of pins may restrict the device's functionality in complex systems requiring additional inputs/outputs.
• Lack of built-in hysteresis may result in oscillations near the threshold voltage.

Working Principles

The TPS3431SQDRBRQ1 operates by comparing the monitored voltage with the threshold voltage set by the user. When the monitored voltage exceeds or falls below this threshold, the device triggers the reset output, indicating an overvoltage or undervoltage condition. The power-on reset delay ensures that the reset output remains active during power-up until the voltage stabilizes within the specified range.

Detailed Application Field Plans

The TPS3431SQDRBRQ1 finds applications in various electronic systems where voltage monitoring and protection are critical. Some potential application fields include:

1. Automotive electronics: The device can be used to monitor the voltage levels in automotive systems, ensuring stable operation and protecting sensitive components from voltage fluctuations.
2. Industrial control systems: It can provide voltage supervision in industrial control systems, preventing damage to equipment due to overvoltage or undervoltage conditions.
3. Battery-powered devices: The low quiescent current and adjustable threshold voltage make it suitable for battery-powered devices such as portable medical equipment, IoT devices, and wearable devices.

Detailed and Complete Alternative Models

• TPS3430SQDRBRQ1: Similar to TPS3431SQDRBRQ1 but with a fixed threshold voltage.
• TPS3432SQDRBRQ1: Dual-channel voltage supervisor with independent threshold voltage settings.
• TPS3433SQDRBRQ1: Triple-channel voltage supervisor with independent threshold voltage settings.

These alternative models offer similar functionality and can be