TL7702AIP

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Reset Generation
• Package: PDIP (Plastic Dual In-Line Package)
• Essence: Monolithic integrated circuit designed to monitor the power supply voltage levels and generate a reset signal when necessary.
• Packaging/Quantity: Available in tubes of 25 units or reels of 1000 units.

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 Options: 200ms, 400ms, 800ms, 1.6s, 3.1s, 6.3s, 12.5s, 25s
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 35µA typical
• Output Type: Active-Low Push-Pull
• Pin Count: 8

Detailed Pin Configuration

1. VCC: Supply Voltage Input
2. GND: Ground
3. MR: Manual Reset Input
4. RESET: Reset Output
5. CT: Capacitor Terminal for Reset Timeout
6. TH: Threshold Voltage Selection
7. TR: Reset Timeout Selection
8. NC: No Connection

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides a manual reset input for immediate system reset.
• Offers various options for threshold voltage and reset timeout period to suit different applications.
• Low quiescent current consumption, making it suitable for battery-powered devices.
• Active-low push-pull output ensures reliable reset signal transmission.

Advantages and Disadvantages

Advantages: - Precise monitoring of supply voltage levels. - Flexible threshold voltage and reset timeout options. - Low power consumption. - Robust reset signal generation. - Easy integration into various electronic systems.

Disadvantages: - Limited number of threshold voltage and reset timeout options. - Not suitable for applications requiring high voltage monitoring.

Working Principles

The TL7702AIP operates by continuously monitoring the supply voltage through an internal voltage divider network. When the voltage falls below the selected threshold level, the reset output is activated, indicating a power failure or unstable voltage condition. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The TL7702AIP finds applications in various fields where reliable voltage monitoring and reset generation are crucial. Some potential application areas include:

1. Microcontroller Systems: Ensuring proper system initialization and preventing data corruption during power fluctuations.
2. Industrial Control Systems: Providing fault detection and system reset capabilities in critical machinery.
3. Automotive Electronics: Monitoring vehicle power supply and generating resets in case of voltage drops.
4. Medical Devices: Ensuring safe operation and protecting sensitive components from voltage variations.
5. Home Automation: Enabling reliable control and protection of smart home devices.

Detailed and Complete Alternative Models

1. TL7700IP: Similar functionality with a different pin configuration (14-pin PDIP).
2. TL7705ACP: Lower supply voltage range (1.8V to 6V) with similar features.
3. MAX823: Voltage supervisor IC with adjustable threshold voltage and reset timeout options.

These alternative models offer similar voltage monitoring and reset generation capabilities, providing options for different system requirements.

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