TL7702AID1/A

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 supervision and monitoring applications.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage: 2.5V to 18V
• Operating Temperature Range: -40°C to +85°C
• Threshold Voltage Options: 1.2V, 2.7V, 4.55V, or Adjustable
• Programmable Delay Time: 1ms to 10s
• Output Type: Active-Low Push-Pull or Open-Drain
• Quiescent Current: 35µA (typical)

Pin Configuration

The TL7702AID1/A has a standard SOIC-8 pin configuration:

____ VCC |1 8| GND INHIB |2 7| RESET TH |3 6| OUT TL |4 5| DELAY ----

Functional Features

1. Voltage Supervision: Monitors the input voltage and provides a reset signal when it falls below a specified threshold.
2. Programmable Delay: Allows users to set a delay time before the reset signal is activated.
3. Adjustable Threshold: Provides flexibility by allowing users to select the desired threshold voltage or use an adjustable option.
4. Low Power Consumption: Operates with low quiescent current, making it suitable for battery-powered applications.
5. Multiple Output Types: Offers both active-low push-pull and open-drain output options.

Advantages and Disadvantages

Advantages: - Precise voltage supervision for reliable system operation. - Programmable delay allows customization based on specific application requirements. - Low power consumption extends battery life in portable devices. - Multiple output types provide flexibility for different circuit configurations.

Disadvantages: - Limited threshold voltage options may not cover all voltage monitoring needs. - The SOIC-8 package may not be suitable for space-constrained applications.

Working Principles

The TL7702AID1/A operates by comparing the input voltage (VCC) with a reference voltage (TH). When VCC falls below the threshold voltage, the reset output (RESET) is activated. The delay time (DELAY) can be programmed using external components to introduce a time delay before the reset signal is generated. The INHIBIT pin allows users to disable the reset function temporarily.

Detailed Application Field Plans

The TL7702AID1/A is commonly used in various applications that require voltage supervision and monitoring. Some of the typical application fields include:

1. Microcontrollers: Ensures proper system reset during power-up or brownout conditions.
2. Embedded Systems: Monitors power supply integrity to prevent data corruption or system malfunction.
3. Automotive Electronics: Provides voltage supervision for critical automotive systems, such as engine control units and safety modules.
4. Industrial Control Systems: Ensures reliable operation of industrial equipment by monitoring power supply stability.
5. Telecommunications: Protects sensitive telecom equipment from voltage fluctuations and ensures uninterrupted operation.

Detailed and Complete Alternative Models

1. TL7700AID - Similar functionality but with fixed threshold voltage options.
2. TL7705AID - Offers additional features like watchdog timer and adjustable hysteresis.
3. TL7712AID - Dual voltage supervisor with independent threshold settings for each channel.
4. TL7715AID - Voltage supervisor with higher threshold voltage options.

These alternative models provide similar voltage supervision capabilities but may have different specifications and features to suit specific application requirements.

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