TPS3421ECDRYT - English Editing Encyclopedia Entry

Product Overview

Category

The TPS3421ECDRYT belongs to the category of integrated circuits (ICs) and specifically falls under the family of supervisory circuits.

Use

This product is primarily used for monitoring and controlling power supply voltages in electronic systems. It ensures proper operation by providing reset signals when voltage levels deviate from specified thresholds.

Characteristics

• Integrated circuit
• Supervisory circuit
• Monitors power supply voltages
• Provides reset signals
• Threshold-based voltage monitoring

Package

The TPS3421ECDRYT is available in a small outline package (SOIC) with eight pins. This package offers ease of integration into various electronic systems.

Essence

The essence of the TPS3421ECDRYT lies in its ability to monitor power supply voltages and provide reset signals, ensuring reliable operation of electronic devices.

Packaging/Quantity

The TPS3421ECDRYT is typically packaged in reels or tubes, containing a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 2.5V to 6.5V
• Reset Threshold Accuracy: ±1%
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Output Type: Active Low
• Power-On Reset Delay Time: 200ms (typical)

Detailed Pin Configuration

The TPS3421ECDRYT has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Reset output
5. TH: Threshold voltage input
6. NC: No connection
7. NC: No connection
8. VDD: Power supply input

Functional Features

1. Voltage Monitoring: The TPS3421ECDRYT continuously monitors the power supply voltage and compares it to the threshold voltage.
2. Reset Generation: When the power supply voltage falls below the threshold, the TPS3421ECDRYT generates a reset signal to ensure proper system operation.
3. Manual Reset: The MR pin allows for manual reset control, enabling users to initiate a system reset when required.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring with ±1% threshold accuracy
• Low quiescent current consumption of 10µA, minimizing power consumption
• Small package size for easy integration into electronic systems
• Manual reset capability provides flexibility in system control

Disadvantages

• Limited operating temperature range (-40°C to +85°C)
• Active low reset output may require additional level shifting circuitry in certain applications

Working Principles

The TPS3421ECDRYT operates based on a voltage comparator principle. It compares the power supply voltage with the threshold voltage set by the TH pin. If the power supply voltage drops below the threshold, the internal circuitry triggers a reset signal, which can be used to restart or reconfigure the system.

Detailed Application Field Plans

The TPS3421ECDRYT finds application in various fields where reliable power supply monitoring is crucial. Some potential application areas include:

1. Industrial Control Systems: Ensuring stable power supply voltages in industrial control systems to prevent malfunctions and downtime.
2. Automotive Electronics: Monitoring power supply voltages in automotive electronics to maintain safe and reliable operation.
3. Consumer Electronics: Providing reset signals in consumer electronic devices to recover from power-related issues and ensure uninterrupted functionality.
4. Medical Devices: Monitoring power supply voltages in medical devices to guarantee patient safety and proper functioning.

Detailed and Complete Alternative Models

1. TPS3420ECDRYT: Similar to the TPS3421ECDRYT, but with a different reset output type (active high).
2. TPS3430ECDRYT: A supervisory circuit with additional features such as adjustable threshold voltage and watchdog timer functionality.
3. TPS3808G01DBVR: Another supervisory circuit with a push-pull output and adjustable threshold voltage.

(Note: This list is not exhaustive and there may be other alternative models available in the market.)

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