TLC7701IDG4

Product Overview

Category: Integrated Circuits (ICs)

Use: The TLC7701IDG4 is a voltage supervisor and reset IC that monitors the power supply voltage of a system. It provides a reset signal to the microcontroller or other digital logic when the voltage drops below a specified threshold.

Characteristics: - Low-power consumption - Wide operating voltage range - Adjustable reset threshold - Precision voltage reference - Open-drain output - Power-on reset delay time

Package: SOIC-8

Essence: The TLC7701IDG4 is an essential component in electronic systems that require reliable power supply monitoring and reset functionality.

Packaging/Quantity: The TLC7701IDG4 is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 18V
• Reset Threshold Voltage Range: 1.6V to 5V
• Quiescent Current: 10µA (typical)
• Power-On Reset Delay Time: 200ms (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TLC7701IDG4 has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | VDD | Supply Voltage | | 3 | MR | Manual Reset Input | | 4 | RESET | Reset Output | | 5 | TH | Threshold Adjust | | 6 | TRIP | Trip Point Output | | 7 | CT | Capacitor Connection | | 8 | NC | No Connect |

Functional Features

• Voltage Monitoring: The TLC7701IDG4 continuously monitors the supply voltage and compares it to the user-adjustable threshold voltage.
• Reset Generation: When the supply voltage drops below the threshold, the TLC7701IDG4 asserts the reset output, signaling a system reset.
• Manual Reset Input: The MR pin allows for manual reset control, overriding the automatic reset generation.
• Trip Point Output: The TRIP pin provides an open-drain output that indicates when the supply voltage is below the threshold.
• Threshold Adjustment: The TH pin allows the user to adjust the threshold voltage using an external resistor divider network.
• Power-On Reset Delay: The TLC7701IDG4 incorporates a power-on reset delay circuit to ensure stable operation during power-up.

Advantages and Disadvantages

Advantages: - Low-power consumption makes it suitable for battery-powered applications. - Wide operating voltage range allows for compatibility with various systems. - Adjustable reset threshold provides flexibility in different voltage monitoring scenarios. - Precision voltage reference ensures accurate monitoring. - Open-drain output simplifies interfacing with other digital logic.

Disadvantages: - Limited number of pins may restrict its use in complex systems requiring additional functionality. - Manual reset input may introduce potential user error if not properly controlled.

Working Principles

The TLC7701IDG4 operates by comparing the supply voltage with the user-adjustable threshold voltage. When the supply voltage drops below the threshold, the reset output is asserted, triggering a system reset. The manual reset input allows for external control over the reset signal. The trip point output provides an indication of the voltage status. The power-on reset delay circuit ensures stable operation during power-up.

Detailed Application Field Plans

The TLC7701IDG4 is widely used in various electronic systems that require reliable power supply monitoring and reset functionality. Some common application fields include:

1. Microcontroller-based Systems: The TLC7701IDG4 ensures proper system initialization and prevents erratic behavior caused by voltage fluctuations.
2. Industrial Control Systems: It provides a fail-safe mechanism to reset critical components in industrial automation systems.
3. Automotive Electronics: The TLC7701IDG4 monitors the vehicle's power supply, ensuring stable operation of electronic control units (ECUs) and preventing damage due to voltage drops.
4. Medical Devices: It plays a vital role in medical equipment by providing reliable reset functionality and protecting sensitive components from voltage variations.

Detailed and Complete Alternative Models

1. TL7700IP - Voltage Supervisor with Fixed Threshold
2. TL7702AID - Dual Voltage Supervisor with Adjustable Threshold
3. MAX809 - Microprocessor Reset Circuits
4. ADM6315 - Precision Voltage Monitor with Manual Reset

These alternative models offer similar functionality to the TLC7701IDG4 and can be considered based on specific application requirements.

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