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ICL7665AESA+T

ICL7665AESA+T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage and provides a reset signal when the voltage falls below a predetermined threshold. - Ensures proper operation of microcontrollers, microprocessors, and other digital systems by preventing them from operating in an undefined state during power-up or power-down.

Package: SOIC-8

Essence: The ICL7665AESA+T is a voltage supervisor IC that ensures reliable operation of digital systems by monitoring the power supply voltage and generating a reset signal when the voltage drops below a specified level.

Packaging/Quantity: The ICL7665AESA+T is available in a surface-mount SOIC-8 package. It is typically sold in reels containing 2500 units.

Specifications

  • Supply Voltage Range: 1.0V to 40V
  • Reset Threshold Voltage: Adjustable from 1.2V to 36V
  • Reset Timeout Period: Adjustable from 1ms to 10s
  • Quiescent Current: 20µA (typical)
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ICL7665AESA+T has the following pin configuration:

____ RESET | | VCC GND | | THRES | | TIMEOUT | | RESET ----

  • RESET: Output pin for the reset signal.
  • VCC: Power supply voltage input.
  • GND: Ground reference.
  • THRES: Input pin for setting the reset threshold voltage.
  • TIMEOUT: Input pin for setting the reset timeout period.

Functional Features

  1. Voltage Monitoring: The ICL7665AESA+T continuously monitors the power supply voltage and compares it with the threshold voltage set by the THRES pin.
  2. Reset Signal Generation: When the power supply voltage falls below the threshold voltage, the ICL7665AESA+T generates a reset signal on the RESET pin.
  3. Adjustable Threshold and Timeout: The THRES and TIMEOUT pins allow users to adjust the reset threshold voltage and timeout period according to their specific requirements.
  4. Low Quiescent Current: The IC has a low quiescent current of 20µA, minimizing power consumption.

Advantages

  • Ensures reliable operation of digital systems during power-up and power-down.
  • Adjustable threshold and timeout settings provide flexibility for different applications.
  • Low quiescent current minimizes power consumption.
  • Compact SOIC-8 package allows for easy integration into various circuit designs.

Disadvantages

  • Limited to monitoring power supply voltages within the specified range (1.0V to 40V).
  • Requires external components for setting the threshold voltage and timeout period.

Working Principles

The ICL7665AESA+T operates by comparing the power supply voltage with the threshold voltage set by the user. If the power supply voltage drops below the threshold voltage, the IC generates a reset signal, which can be used to reset microcontrollers, microprocessors, or other digital systems. The timeout period determines how long the reset signal remains active after the power supply voltage returns to normal.

Application Field Plans

The ICL7665AESA+T is widely used in various applications where reliable voltage monitoring and reset functionality are required. Some potential application fields include:

  1. Embedded Systems: Used to ensure proper initialization and safe shutdown of microcontroller-based embedded systems.
  2. Industrial Automation: Provides voltage supervision for control systems, preventing erratic behavior during power fluctuations.
  3. Telecommunications: Ensures stable operation of communication equipment by resetting the system in case of power supply voltage drops.
  4. Automotive Electronics: Monitors the vehicle's power supply voltage to prevent malfunctions and ensure safe operation of electronic systems.

Alternative Models

  1. MAX809: Voltage supervisor IC with similar functionality, available in various package options.
  2. ADM708: Microprocessor supervisory circuit with adjustable reset threshold and timeout period.
  3. TPS3839: Ultra-low-power voltage supervisor with a wide supply voltage range and adjustable reset threshold.

These alternative models offer similar features and can be considered as substitutes for the ICL7665AESA+T based on specific application requirements.


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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de ICL7665AESA+T en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of ICL7665AESA+T in technical solutions:

  1. Q: What is the ICL7665AESA+T? A: The ICL7665AESA+T is a precision CMOS voltage converter that can convert positive voltages to negative voltages.

  2. Q: What is the input voltage range of the ICL7665AESA+T? A: The input voltage range of the ICL7665AESA+T is typically between 1.5V and 16V.

  3. Q: What is the output voltage range of the ICL7665AESA+T? A: The output voltage range of the ICL7665AESA+T is typically between -1.5V and -16V.

  4. Q: Can the ICL7665AESA+T be used to generate dual power supplies? A: Yes, the ICL7665AESA+T can be used to generate dual power supplies by converting a single positive voltage to both positive and negative voltages.

  5. Q: What is the maximum output current of the ICL7665AESA+T? A: The maximum output current of the ICL7665AESA+T is typically 40mA.

  6. Q: Is the ICL7665AESA+T suitable for low-power applications? A: Yes, the ICL7665AESA+T is designed for low-power applications and has a low quiescent current consumption.

  7. Q: Can the ICL7665AESA+T be used in battery-powered devices? A: Yes, the low power consumption and wide input voltage range make the ICL7665AESA+T suitable for battery-powered devices.

  8. Q: What is the operating temperature range of the ICL7665AESA+T? A: The operating temperature range of the ICL7665AESA+T is typically between -40°C and +85°C.

  9. Q: Can the ICL7665AESA+T be used in automotive applications? A: Yes, the ICL7665AESA+T is designed to meet automotive specifications and can be used in automotive applications.

  10. Q: Are there any recommended external components for using the ICL7665AESA+T? A: Yes, it is recommended to use input and output capacitors to stabilize the voltage conversion process and improve performance.

Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the datasheet and consult with the manufacturer for detailed information.