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TL7705AIDG4
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TL7705AIDG4

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a certain threshold - Prevents erratic behavior or data corruption in the system - Ensures reliable operation and protects sensitive components

Package: SOIC-8

Essence: The TL7705AIDG4 is an integrated circuit that provides voltage supervision for electronic systems. It ensures stable operation by monitoring the power supply voltage and generating a reset signal when it falls below a specified threshold.

Packaging/Quantity: The TL7705AIDG4 is available in a small outline integrated circuit (SOIC) package with 8 pins. It is commonly sold in reels or tubes, with a typical quantity of 250 units per reel.

Specifications

  • Supply Voltage Range: 2.7V to 18V
  • Reset Threshold Voltage Options: 4.55V, 4.65V, 4.75V, 4.85V, 4.95V, 5.05V, 5.15V, 5.25V
  • Reset Timeout Period: 200ms (typical)
  • Operating Temperature Range: -40°C to +85°C
  • Quiescent Current: 35µA (typical)

Detailed Pin Configuration

The TL7705AIDG4 has the following pin configuration:

  1. GND: Ground reference for the IC.
  2. VCC: Positive power supply input.
  3. MR: Manual reset input. When pulled low, it forces a reset condition.
  4. RESET: Output signal indicating the system reset status.
  5. THRESHOLD: Input for selecting the desired reset threshold voltage.
  6. SENSE: Voltage sense input for monitoring the power supply voltage.
  7. VCC2: Secondary power supply input (optional).
  8. NC: No connection.

Functional Features

  • Voltage Monitoring: The TL7705AIDG4 continuously monitors the power supply voltage to ensure it remains within a safe operating range.
  • Reset Generation: When the voltage falls below the specified threshold, the IC generates a reset signal to initiate a system reset.
  • Manual Reset: The MR pin allows for a manual reset by pulling it low, overriding the voltage monitoring function.
  • Selectable Threshold: The desired reset threshold voltage can be set using the THRESHOLD pin, providing flexibility for different system requirements.
  • Reset Timeout: After generating a reset signal, the IC maintains it for a fixed timeout period of 200ms before releasing it, allowing the system to stabilize.

Advantages and Disadvantages

Advantages: - Ensures reliable operation by monitoring the power supply voltage - Protects sensitive components from erratic behavior or data corruption - Compact SOIC package for space-constrained applications - Wide supply voltage range allows compatibility with various systems

Disadvantages: - Limited number of selectable reset threshold voltage options - Manual reset functionality may not be required in all applications

Working Principles

The TL7705AIDG4 operates by comparing the power supply voltage with the selected threshold voltage. If the voltage drops below the threshold, the IC triggers a reset signal. This signal remains active for the timeout period, allowing the system to reset and stabilize. The voltage monitoring ensures that the system operates within safe limits, preventing damage to components and ensuring reliable performance.

Detailed Application Field Plans

The TL7705AIDG4 is widely used in various electronic systems where voltage supervision is critical. Some common application fields include:

  1. Microcontrollers and Microprocessors: The IC ensures proper operation of microcontrollers and microprocessors by monitoring the power supply voltage and initiating a reset if necessary.
  2. Embedded Systems: It is commonly used in embedded systems to prevent data corruption or erratic behavior caused by voltage fluctuations.
  3. Industrial Control Systems: The TL7705AIDG4 provides voltage supervision in industrial control systems, ensuring stable operation and protecting sensitive components.
  4. Automotive Electronics: It finds applications in automotive electronics to monitor the power supply voltage and initiate a reset if needed, enhancing system reliability.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the TL7705AIDG4 include:

  1. MAX809: Voltage Supervisors with Manual Reset
  2. ADM6315: Microprocessor Supervisory Circuits
  3. TPS3808: Supply Voltage Supervisors
  4. LTC2910: Dual Voltage Supervisor with Adjustable Reset Timeout

These alternatives offer comparable features and can be considered based on specific application requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi TL7705AIDG4 dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of TL7705AIDG4 in technical solutions:

  1. Q: What is TL7705AIDG4? A: TL7705AIDG4 is a voltage supervisor and reset IC that monitors the power supply voltage of a system and generates a reset signal when the voltage falls below a certain threshold.

  2. Q: What are the typical applications of TL7705AIDG4? A: TL7705AIDG4 is commonly used in microcontroller-based systems, embedded systems, industrial control systems, and any other application where a reliable reset signal is required.

  3. Q: How does TL7705AIDG4 work? A: TL7705AIDG4 compares the monitored voltage with a reference voltage internally. When the monitored voltage drops below the reference voltage, it triggers the reset output, which can be used to reset the microcontroller or other components.

  4. Q: What is the operating voltage range of TL7705AIDG4? A: TL7705AIDG4 operates within a voltage range of 2.7V to 18V.

  5. Q: Can TL7705AIDG4 monitor multiple power supplies? A: No, TL7705AIDG4 can only monitor a single power supply voltage.

  6. Q: What is the typical reset time delay of TL7705AIDG4? A: The typical reset time delay of TL7705AIDG4 is around 200ms.

  7. Q: Does TL7705AIDG4 have an adjustable reset threshold? A: No, TL7705AIDG4 has a fixed reset threshold voltage of approximately 4.55V.

  8. Q: Can TL7705AIDG4 tolerate voltage transients or spikes? A: Yes, TL7705AIDG4 has built-in hysteresis to prevent false triggering due to voltage transients or spikes.

  9. Q: What is the maximum supply current of TL7705AIDG4? A: The maximum supply current of TL7705AIDG4 is typically around 20µA.

  10. Q: Is TL7705AIDG4 available in different package options? A: Yes, TL7705AIDG4 is available in various package options, such as SOIC-8 and PDIP-8.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for TL7705AIDG4.