TPS389025QDSERQ1

Product Overview

Category

The TPS389025QDSERQ1 belongs to the category of integrated circuits (ICs) and specifically falls under the voltage supervisors or monitors.

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, triggering appropriate actions if thresholds are exceeded or not met.

Characteristics

• Voltage monitoring: The TPS389025QDSERQ1 can monitor voltages ranging from 0.4V to 5.5V.
• Low power consumption: It operates with low quiescent current, making it suitable for battery-powered applications.
• Wide temperature range: The device can operate in a temperature range of -40°C to +125°C, making it suitable for various environments.
• Adjustable threshold: The voltage threshold can be set using external resistors, allowing flexibility in different applications.
• Reset output options: The device provides both active-low and active-high reset outputs, catering to different system requirements.

Package and Quantity

The TPS389025QDSERQ1 is available in a small SOT-23 package. It is typically sold in reels containing 3000 units per reel.

Specifications

• Supply voltage range: 0.4V to 5.5V
• Quiescent current: 2.5µA (typical)
• Threshold accuracy: ±1.5%
• Reset timeout period: 200ms (typical)
• Operating temperature range: -40°C to +125°C

Pin Configuration

The TPS389025QDSERQ1 has a 5-pin SOT-23 package with the following pin configuration:

```

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| | | GND | |___________| | | | RESET | |___________| | | | VDD | |___________| | | | MR | |___________| | | | TH | |___________| ```

Functional Features

• Voltage monitoring: The TPS389025QDSERQ1 continuously monitors the voltage level and compares it to the set threshold.
• Reset generation: When the voltage falls below or exceeds the threshold, the device generates a reset signal to initiate appropriate actions in the system.
• Adjustable threshold: The threshold voltage can be adjusted using external resistors, allowing customization for different applications.
• Power-on reset: The device provides a power-on reset signal to ensure proper initialization of the system during power-up.

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered devices.
• Adjustable threshold enables flexibility in different voltage monitoring applications.
• Small package size saves board space and facilitates integration into compact designs.
• Power-on reset ensures reliable system startup.

Disadvantages

• Limited number of pins may restrict additional functionalities without external circuitry.
• Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage.

Working Principles

The TPS389025QDSERQ1 operates by comparing the monitored voltage with the set threshold. If the voltage falls below or exceeds the threshold, the device generates a reset signal. This reset signal can be used to trigger actions such as system shutdown, fault logging, or recovery procedures. The threshold voltage can be adjusted using external resistors, providing flexibility in different voltage monitoring applications.

Application Field Plans

The TPS389025QDSERQ1 finds application in various fields where voltage monitoring is critical. Some potential application areas include: - Battery-powered devices: Ensuring proper voltage levels to prevent damage or premature shutdown. - Automotive systems: Monitoring critical voltages in vehicle electronics for safety and reliability. - Industrial automation: Voltage supervision in control systems to prevent malfunctions or equipment damage. - Telecommunications: Monitoring power supply voltages in network equipment to maintain uninterrupted operation.

Alternative Models

For those seeking alternative options, the following models can be considered: - TPS389033QDSERQ1: Similar functionality with a higher threshold voltage of 3.3V. - TPS389040QDSERQ1: Similar functionality with a higher threshold voltage of 4.0V. - TPS389050QDSERQ1: Similar functionality with a higher threshold voltage of 5.0V.

These alternatives provide similar voltage monitoring capabilities but with different threshold voltage options to suit specific application requirements.

In conclusion, the TPS389025QDSERQ1 is an integrated circuit voltage supervisor that offers precise voltage monitoring, adjustable thresholds, and low power consumption. Its small package size and wide operating temperature range make it suitable for various applications in industries such as