TPS3700DDCR

Product Overview

Category

The TPS3700DDCR 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 it goes beyond the set limits.

Characteristics

• Voltage supervision: The TPS3700DDCR can monitor voltages ranging from 1.8V to 5.5V.
• Adjustable threshold: The device allows users to set the desired voltage threshold for monitoring.
• Precision: It offers high accuracy in voltage monitoring, ensuring reliable performance.
• Low power consumption: The TPS3700DDCR operates with low power consumption, making it suitable for battery-powered applications.
• Small package size: This IC comes in a small SOT-23 package, enabling space-efficient designs.

Package and Quantity

The TPS3700DDCR is available in a SOT-23 package. It is typically sold in reels, with each reel containing 3000 units.

Specifications

• Supply voltage range: 1.8V to 5.5V
• Operating temperature range: -40°C to +125°C
• Quiescent current: 2.5µA (typical)
• Threshold voltage accuracy: ±1%
• Output type: Active-low, open-drain
• Power-on reset delay time: 20ms (typical)

Pin Configuration

The TPS3700DDCR has three pins:

1. GND: Ground pin
2. VDD: Supply voltage input
3. RESET: Active-low, open-drain output pin

Functional Features

1. Voltage Monitoring: The TPS3700DDCR continuously monitors the input voltage and compares it to the user-defined threshold.
2. Reset Generation: When the voltage falls below the set threshold, the RESET pin is pulled low, indicating a reset condition.
3. Hysteresis: The device incorporates hysteresis to prevent oscillation near the threshold voltage, ensuring stable operation.
4. Power-On Reset: Upon power-up, the TPS3700DDCR generates a reset signal to ensure a controlled start-up of the system.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Adjustable threshold enables customization for different voltage requirements.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered applications.
• Small package size facilitates space-constrained designs.
• Accurate voltage monitoring ensures reliable system operation.

Disadvantages

• Lack of built-in overvoltage protection.
• Limited number of pins restricts additional functionalities without external circuitry.

Working Principles

The TPS3700DDCR operates by comparing the input voltage with the user-defined threshold voltage. If the input voltage falls below this threshold, the device triggers a reset condition by pulling the RESET pin low. This reset signal can be used to initiate appropriate actions in the system, such as restarting or shutting down.

Application Field Plans

The TPS3700DDCR finds application in various fields where voltage monitoring and supervision are critical. Some potential application areas include:

1. Battery-Powered Devices: Portable electronic devices, such as smartphones, tablets, and wearables, benefit from the TPS3700DDCR's low power consumption and accurate voltage monitoring.
2. Industrial Control Systems: The IC can be used in industrial control systems to monitor power supply voltages and trigger alarms or shutdowns in case of voltage deviations.
3. Automotive Electronics: The TPS3700DDCR can be employed in automotive electronics to monitor critical voltage levels, ensuring the reliable operation of various systems.

Alternative Models

1. TPS3700DDCT: Similar to TPS3700DDCR but available in a smaller SOT-563 package.
2. TPS3700DDC: Same functionality as TPS3700DDCR but offered in a different package (SOT-323).

These alternative models provide similar voltage monitoring capabilities and can be considered based on specific design requirements.

In conclusion, the TPS3700DDCR is an integrated circuit used for voltage supervision in electronic systems. With its adjustable threshold, low power consumption, and small package size, it offers precise and reliable voltage monitoring. However, it lacks built-in overvoltage protection and has limited pin count. The IC finds applications in battery-powered devices, industrial control systems, and automotive electronics, among others. Alternative models like TPS3700DDCT and TPS3700DDC offer similar functionality with variations in package size.