TL7705AIDRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Programmable Delay
• Package: SOIC-8
• Essence: Monolithic integrated circuit designed for voltage monitoring and reset generation
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 18V
• Threshold Voltage Options: 2.32V, 2.55V, 2.93V, 3.08V, 4.38V, 4.63V, 4.88V, 5.00V
• Reset Timeout Period: Adjustable from 1ms to 6.4s
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low Push-Pull
• Quiescent Current: 20µA (typical)

Pin Configuration

The TL7705AIDRG4 is an 8-pin IC with the following pin configuration:

1. GND: Ground
2. VCC: Supply Voltage
3. RESET: Active-Low Reset Output
4. MR: Manual Reset Input
5. TH: Threshold Voltage Selection Input
6. CT: Capacitor Connection for Reset Timeout
7. DISCH: Discharge Output
8. OUT: Power-On Reset Output

Functional Features

• Voltage Monitoring: The TL7705AIDRG4 continuously monitors the supply voltage and generates a reset signal when it falls below a specified threshold.
• Programmable Delay: The reset timeout period can be adjusted using an external capacitor, allowing customization based on specific application requirements.
• Manual Reset: The MR pin provides a means to manually trigger a reset, overriding the voltage monitoring function.
• Power-On Reset: The OUT pin provides an active-low reset signal upon power-up, ensuring proper initialization of the system.

Advantages and Disadvantages

Advantages: - Low-power consumption - Precision voltage monitoring - Programmable delay for flexibility - Manual reset option for control - Power-on reset for reliable startup

Disadvantages: - Limited threshold voltage options - Single-channel voltage monitoring

Working Principles

The TL7705AIDRG4 operates by comparing the supply voltage with the selected threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a low-voltage condition. The reset timeout period can be adjusted using an external capacitor connected to the CT pin. During this period, if the supply voltage remains below the threshold, the reset output remains active. Once the supply voltage rises above the threshold or the reset timeout period elapses, the reset output deactivates.

Detailed Application Field Plans

The TL7705AIDRG4 finds applications in various fields where voltage monitoring and reset generation are critical. Some specific application areas include:

1. Microcontrollers: Ensuring proper initialization and reliable operation of microcontroller-based systems.
2. Industrial Control Systems: Monitoring power supply voltages in industrial automation and control systems.
3. Automotive Electronics: Providing voltage supervision for automotive electronic modules and subsystems.
4. Medical Devices: Ensuring safe operation and protection against voltage fluctuations in medical equipment.
5. Power Management: Enabling efficient power management by triggering resets during voltage anomalies.

Detailed and Complete Alternative Models

1. TL7700AID - Similar functionality with fixed threshold voltage options.
2. TL7702AID - Dual-channel version for monitoring two independent voltage sources.
3. TL7709AID - Higher threshold voltage options for specific applications.
4. TL7712AID - Programmable delay with additional features like watchdog timer.

These alternative models offer similar voltage monitoring and reset generation capabilities, catering to different application requirements.

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