TL7705ACP

series introduction

# Introduction to the TL7705ACP Product Series

## Overview
The TL7705ACP is a highly reliable and versatile voltage supervisor integrated circuit (IC) that plays a crucial role in ensuring the proper operation of electronic systems. Manufactured by Texas Instruments, this product series is designed to monitor the power supply voltage of a system and take appropriate actions when the voltage deviates from the acceptable range. With its advanced features and robust performance, the TL7705ACP is widely used in a variety of applications, including industrial control systems, automotive electronics, telecommunications equipment, and consumer electronics.

## Key Features
### 1. Precision Voltage Monitoring
The TL7705ACP offers precise voltage monitoring capabilities, allowing it to detect even small changes in the power supply voltage. It has a fixed threshold voltage of 4.63V, which is suitable for most 5V power supply systems. This high level of precision ensures that the system can be protected from under - voltage conditions, preventing data corruption, system malfunctions, and potential damage to components.

### 2. Adjustable Reset Timeout
One of the significant features of the TL7705ACP is its adjustable reset timeout period. The reset output remains active for a specified time after the power supply voltage has risen above the threshold voltage. This adjustable timeout allows designers to customize the system's startup behavior according to the specific requirements of the application. It ensures that the system has sufficient time to initialize properly before normal operation begins.

### 3. Low Power Consumption
In today's energy - conscious world, low power consumption is a critical factor in the design of electronic devices. The TL7705ACP is designed with low power consumption in mind. It has a very low quiescent current, typically in the range of a few microamperes. This makes it an ideal choice for battery - powered applications or systems where power efficiency is a top priority.

### 4. Open - Drain Reset Output
The TL7705ACP features an open - drain reset output. This type of output allows for easy interfacing with other digital circuits. It can be pulled up to a desired voltage level using an external resistor, providing flexibility in system design. The open - drain output also enables the use of wired - OR connections, which can be useful in multi - device systems.

### 5. Wide Operating Temperature Range
The product series is designed to operate over a wide temperature range, typically from - 40°C to + 85°C. This makes it suitable for use in harsh environmental conditions, such as industrial and automotive applications, where temperature variations can be significant. The ability to withstand a wide temperature range ensures the reliability and stability of the system over its entire operating life.

## Functional Description
### Power Supply Monitoring
The TL7705ACP continuously monitors the power supply voltage. When the voltage drops below the threshold voltage of 4.63V, the reset output is activated. This reset signal can be used to reset microcontrollers, microprocessors, or other digital circuits in the system, preventing them from operating with an unstable power supply.

### Reset Generation
Once the reset output is activated, it remains active until the power supply voltage rises above the threshold voltage and the adjustable reset timeout period has elapsed. This ensures that the system remains in a reset state long enough for the power supply to stabilize and for the system to initialize properly.

### External Components
The TL7705ACP requires only a few external components for proper operation. An external capacitor is connected to the CT pin to set the reset timeout period. The value of this capacitor determines the length of the reset timeout, allowing for easy customization of the system's startup behavior.

## Applications
### Industrial Control Systems
In industrial control systems, the reliability of the power supply is crucial for the proper operation of machinery and equipment.

Images for reference

8-DIP

8-SOIC

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Datasheets

• TL7702A/05A/09A/12A/15A
• TL7700A Series
• PDF 3

Partlist