TL7700CDGKR

Product Overview

Category

TL7700CDGKR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in electronic devices for voltage monitoring and reset functions.

Characteristics

• TL7700CDGKR is a low-power, voltage supervisor with a precision voltage reference and watchdog timer.
• It operates over a wide supply voltage range, making it suitable for various applications.
• The IC provides accurate monitoring of power supply voltages, ensuring proper system operation.
• It offers a programmable reset time delay, allowing customization based on specific requirements.

Package

TL7700CDGKR is available in a small surface-mount package known as VSSOP-8.

Essence

The essence of TL7700CDGKR lies in its ability to monitor voltage levels and provide reliable reset signals to ensure stable operation of electronic systems.

Packaging/Quantity

TL7700CDGKR is typically sold in reels containing 2500 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
• Watchdog Timer Timeout Period: 1.6s (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. GND: Ground connection
2. MR: Master Reset input
3. RESET: Active-low reset output
4. VDD: Positive power supply
5. VREF: Reference voltage output
6. CT: Capacitor connection for reset time delay
7. WDI: Watchdog input
8. NC: No connection

Functional Features

Voltage Monitoring

TL7700CDGKR accurately monitors the power supply voltage and generates a reset signal when it falls below a specified threshold.

Watchdog Timer

The integrated watchdog timer ensures that the system remains operational by periodically resetting it if no activity is detected within a predefined timeout period.

Programmable Reset Time Delay

The IC allows users to adjust the reset time delay by connecting an external capacitor to the CT pin, enabling customization based on specific system requirements.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various applications.
• Accurate voltage monitoring ensures reliable system operation.
• Programmable reset time delay provides flexibility for different scenarios.

Disadvantages

• Limited number of available reset threshold voltage options.
• Surface-mount package may require specialized equipment for soldering.

Working Principles

TL7700CDGKR operates by continuously monitoring the power supply voltage. If the voltage drops below the programmed threshold, the IC generates a reset signal, which can be used to restart or halt the system. The watchdog timer ensures that the system remains responsive by periodically resetting it if no activity is detected within the defined timeout period.

Detailed Application Field Plans

TL7700CDGKR finds applications in various electronic systems where voltage monitoring and reset functions are critical. Some common application fields include:

1. Microcontrollers and Microprocessors: TL7700CDGKR can be used to monitor the power supply voltage of microcontrollers and microprocessors, ensuring stable operation and preventing data corruption during voltage fluctuations.

2. Industrial Control Systems: In industrial control systems, TL7700CDGKR plays a vital role in monitoring the power supply voltage and generating reset signals to maintain system integrity and prevent damage to sensitive equipment.

3. Automotive Electronics: This IC is also suitable for automotive electronics, where it can monitor the battery voltage and initiate appropriate actions to prevent system failures or damage.

Detailed and Complete Alternative Models

1. TL7702ACD: This IC offers similar voltage monitoring and reset functions but comes in a different package (SOIC-8).
2. MAX823R: A comparable IC from Maxim Integrated, providing voltage monitoring and reset capabilities with adjustable reset threshold options.
3. ADM708ARZ: Analog Devices offers this alternative IC with precision voltage monitoring and programmable reset time delay features.

(Note: The above list is not exhaustive and serves as an example of alternative models available in the market.)

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