TPS3705-50DGN

Product Overview

Category

The TPS3705-50DGN 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 voltage levels in electronic systems. It ensures that the voltage remains within a specified range, triggering appropriate actions when thresholds are exceeded.

Characteristics

• Voltage monitoring: The TPS3705-50DGN can monitor voltages in the range of 0.4V to 6V.
• Adjustable threshold: The device allows users to set the desired voltage threshold using external resistors.
• Precision: It offers high accuracy in voltage monitoring, ensuring reliable operation of electronic systems.
• Low power consumption: The TPS3705-50DGN is designed to consume minimal power, making it suitable for battery-powered applications.
• Wide temperature range: It can operate reliably across a wide temperature range, from -40°C to 125°C.

Package and Quantity

The TPS3705-50DGN is available in a small form factor package known as MSOP-8. Each package contains one unit of the IC.

Specifications

• Supply voltage range: 1.2V to 6V
• Threshold voltage options: 0.4V, 0.9V, 1.2V, 1.8V, 2.5V, 3.3V, 5V
• Quiescent current: 10µA (typical)
• Power-on reset delay time: 20ms (typical)
• Open-drain output configuration

Detailed Pin Configuration

The TPS3705-50DGN features an MSOP-8 package with the following pin configuration:

1. GND (Ground)
2. VDD (Supply voltage)
3. VIT (Voltage input threshold)
4. MR (Manual reset input)
5. GND (Ground)
6. RESET (Reset output)
7. GND (Ground)
8. VDD (Supply voltage)

Functional Features

• Voltage monitoring: The TPS3705-50DGN continuously monitors the input voltage and compares it with the user-defined threshold.
• Reset generation: When the monitored voltage falls below the threshold, the device generates a reset signal to initiate appropriate actions.
• Manual reset: The MR pin allows for manual reset, overriding the automatic reset function.
• Power-on reset delay: The IC provides a power-on reset delay to ensure stable operation during power-up.

Advantages and Disadvantages

Advantages

• High accuracy in voltage monitoring ensures reliable system operation.
• Adjustable threshold allows customization based on specific requirements.
• Low power consumption makes it suitable for battery-powered applications.
• Wide temperature range enables operation in various environments.

Disadvantages

• Limited number of threshold voltage options may not cater to all voltage monitoring needs.
• Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage.

Working Principles

The TPS3705-50DGN operates by comparing the input voltage with the user-defined threshold voltage. If the input voltage falls below the threshold, the device generates a reset signal. This reset signal can be used to trigger actions such as system shutdown or fault indication. The IC also incorporates a power-on reset delay to ensure stable operation during power-up.

Detailed Application Field Plans

The TPS3705-50DGN finds application in various fields where voltage monitoring is critical. Some examples include: 1. Battery-powered devices: It can be used to monitor battery voltage and trigger low-battery warnings or shutdowns. 2. Industrial control systems: The IC ensures that critical voltages remain within specified limits, preventing damage to equipment. 3. Automotive electronics: It can monitor voltage levels in automotive systems and initiate appropriate actions in case of faults or abnormal conditions.

Detailed and Complete Alternative Models

1. TPS3705-33DGN: Similar to the TPS3705-50DGN, but with a threshold voltage of 3.3V.
2. TPS3705-25DGN: Similar to the TPS3705-50DGN, but with a threshold voltage of 2.5V.
3. TPS3705-18DGN: Similar to the TPS3705-50DGN, but with a threshold voltage of 1.8V.

These alternative models provide different threshold voltage options to cater to a wider range of voltage monitoring requirements.

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