TPS389050QDSERQ1

Product Overview

Category

The TPS389050QDSERQ1 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 a specified range, triggering appropriate actions if it goes beyond the set limits.

Characteristics

• Voltage monitoring: The TPS389050QDSERQ1 can monitor voltages in the range of 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 function reliably across a wide temperature range, from -40°C to 125°C.
• Adjustable threshold: The voltage threshold for triggering an alert can be adjusted using external resistors.
• Reset output options: The TPS389050QDSERQ1 provides both active-low and active-high reset outputs.

Package

This product is available in a small package, such as a 6-pin SOT-23 package, which offers compactness and ease of integration into various electronic systems.

Essence

The essence of the TPS389050QDSERQ1 lies in its ability to monitor voltage levels accurately and provide a reliable reset signal when necessary. This feature ensures the proper functioning and protection of electronic devices.

Packaging/Quantity

The TPS389050QDSERQ1 is typically sold in reels or tubes containing a specific quantity of units, such as 3000 pieces per reel.

Specifications

• Supply voltage range: 0.4V to 5.5V
• Quiescent current: 1.8µA (typical)
• Threshold accuracy: ±1.5%
• Reset timeout period: 200ms (typical)
• Operating temperature range: -40°C to 125°C

Detailed Pin Configuration

The TPS389050QDSERQ1 has the following pin configuration:

1. GND: Ground connection
2. MR: Manual reset input (active-low)
3. VDD: Supply voltage input
4. RESET: Reset output (active-low)
5. TH: Threshold adjust pin
6. NC: No connection

Functional Features

Voltage Monitoring

The TPS389050QDSERQ1 continuously monitors the voltage level at the TH pin. If the voltage falls below the threshold set by external resistors, the device triggers a reset signal.

Manual Reset

The MR pin allows for manual reset functionality. When pulled low, it forces an immediate reset, regardless of the monitored voltage level.

Adjustable Threshold

By connecting external resistors to the TH pin, the voltage threshold for triggering a reset can be adjusted according to the specific requirements of the application.

Reset Output Options

The TPS389050QDSERQ1 provides both active-low and active-high reset outputs, allowing flexibility in interfacing with different electronic systems.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring and reliable reset functionality.
• Low power consumption, suitable for battery-powered applications.
• Wide operating temperature range ensures reliability in various environments.
• Adjustable threshold allows customization for specific voltage requirements.
• Compact package enables easy integration into space-constrained designs.

Disadvantages

• Limited to voltage monitoring and reset functionality, without additional features like overvoltage or undervoltage protection.

Working Principles

The TPS389050QDSERQ1 operates by comparing the voltage at the TH pin with the internally generated reference voltage. If the monitored voltage falls below the threshold set by external resistors, the device triggers a reset signal. The reset output remains active until the voltage rises above the threshold or a manual reset is triggered.

Detailed Application Field Plans

The TPS389050QDSERQ1 finds applications in various electronic systems where accurate voltage monitoring and reliable reset functionality are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper operation by monitoring supply voltage levels and triggering resets if necessary.
2. Battery-powered devices: Protecting against undervoltage conditions that could affect performance or damage the battery.
3. Industrial automation: Monitoring critical power supplies to prevent system failures and ensure safe operation.
4. Automotive electronics: Providing voltage supervision for automotive control units, ensuring stable operation under varying conditions.

Detailed and Complete Alternative Models

1. TPS389040QDSERQ1: Similar to TPS389050QDSERQ1 but with a lower voltage threshold of 0.4V.
2. TPS389060QDSERQ1: Similar to TPS389050QDSERQ1 but with a higher voltage threshold of 0.6V.
3. TPS389070QDSER