TLC7725IDRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Reset Generation
• Package: SOIC-8
• Essence: Monolithic CMOS device
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Threshold Voltage Options: 2.32V, 2.62V, 3.08V, 4.38V
• Output Type: Active-Low, Open Drain
• Reset Timeout Period: Adjustable or Fixed (140ms, 560ms, 1120ms, or 2240ms)

Detailed Pin Configuration

The TLC7725IDRG4 has a total of 8 pins:

1. GND: Ground pin
2. VDD: Positive supply voltage pin
3. RESET: Active-low reset output pin
4. TH: Threshold voltage selection pin
5. CT: Capacitor connection pin for reset timeout period adjustment
6. MR: Manual reset input pin
7. OUT: Open-drain reset output pin
8. NC: No connection pin

Functional Features

• Precision monitoring of supply voltages
• Generates a reset signal when the supply voltage falls below the threshold
• Adjustable or fixed reset timeout period
• Manual reset option available
• Open-drain output for easy interfacing with other devices

Advantages and Disadvantages

Advantages

• Low-power consumption
• High precision in voltage monitoring
• Wide operating temperature range
• Adjustable reset timeout period for flexibility
• Easy integration with other circuits due to open-drain output

Disadvantages

• Limited threshold voltage options
• No internal pull-up resistor for the reset output pin

Working Principles

The TLC7725IDRG4 is designed to monitor the supply voltage and generate a reset signal when it falls below a certain threshold. It operates based on a precision voltage comparator that compares the supply voltage with the selected threshold voltage. When the supply voltage drops below the threshold, the reset output becomes active-low, indicating a system reset condition. The reset timeout period can be adjusted or fixed, determining how long the reset signal remains active after the supply voltage returns to normal.

Detailed Application Field Plans

The TLC7725IDRG4 is commonly used in various applications where reliable voltage monitoring and reset generation are crucial. Some of the typical application fields include:

1. Microcontrollers and Microprocessors: Ensuring proper system initialization and preventing erratic behavior during power-up or brownout conditions.
2. Industrial Control Systems: Providing fault detection and system recovery capabilities in critical control systems.
3. Automotive Electronics: Monitoring battery voltage and initiating system resets in case of voltage fluctuations or low battery conditions.
4. Power Management: Enabling safe shutdown and restart procedures in power-sensitive devices.
5. Communication Systems: Guaranteeing stable operation by resetting the system in case of power disturbances.

Detailed and Complete Alternative Models

1. TL7705AIP: Similar voltage supervisor IC with fixed 2.32V threshold and adjustable reset timeout period.
2. MAX809: Voltage supervisor IC with adjustable threshold voltage and fixed reset timeout period.
3. ADM6315: Precision voltage monitor with adjustable threshold voltage and watchdog timer functionality.

These alternative models offer similar features and can be considered as substitutes for the TLC7725IDRG4 depending on specific requirements.

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