TL7700CPWR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Programmable
• Package: 8-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Monolithic CMOS voltage supervisor circuit
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.5V to 18V
• Operating Temperature Range: -40°C to +85°C
• Output Current: 20mA
• Reset Threshold Voltage Options: 4.55V, 4.65V, 4.75V, 4.85V, 4.95V, 5.05V, 5.15V, 5.25V
• Power-On Reset Time Delay: 200ms (typical)

Detailed Pin Configuration

1. VDD: Positive supply voltage input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Active-low reset output
5. VIT: Internal threshold voltage setting pin
6. VTH: External threshold voltage setting pin
7. CT: Capacitor connection for power-on reset time delay
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 programmable threshold voltage options for flexibility in different applications.
• Includes an internal threshold voltage setting pin for fixed threshold voltage selection.
• Allows external threshold voltage setting for adjustable threshold voltage.
• Incorporates a capacitor connection for power-on reset time delay adjustment.

Advantages

• Low-power consumption, suitable for battery-powered devices.
• Precision monitoring of supply voltage ensures reliable system operation.
• Programmable threshold voltage options cater to various voltage requirements.
• Manual reset input allows manual control over system reset.
• Small package size and tape and reel packaging facilitate easy integration into manufacturing processes.

Disadvantages

• Limited output current may not be suitable for high-current applications.
• Fixed threshold voltage options may not meet specific voltage monitoring needs in some cases.
• External capacitor requirement for power-on reset time delay adds complexity to the circuit design.

Working Principles

The TL7700CPWR is a monolithic CMOS voltage supervisor circuit that continuously monitors the supply voltage. It compares the supply voltage with a programmable threshold voltage and generates a reset signal when the supply voltage falls below the threshold. The reset signal remains active until the supply voltage rises above the threshold voltage again. The IC also includes a manual reset input, which can be used to force an immediate system reset regardless of the supply voltage level.

Detailed Application Field Plans

The TL7700CPWR is commonly used in various electronic systems where reliable voltage monitoring is crucial. Some application fields include: 1. Microcontrollers and microprocessors: Ensures proper system initialization and prevents erratic behavior due to unstable power supply. 2. Industrial control systems: Provides reliable reset functionality to ensure safe operation and prevent damage to equipment during power fluctuations. 3. Automotive electronics: Monitors the vehicle's electrical system to prevent malfunctions and protect sensitive components. 4. Power management systems: Facilitates efficient power distribution and protects devices from voltage drops or surges. 5. Battery-powered devices: Maximizes battery life by monitoring voltage levels and initiating appropriate actions based on the battery status.

Detailed and Complete Alternative Models

1. TL7702ACPWR: Similar to TL7700CPWR but with different threshold voltage options.
2. TL7705ACPWR: Voltage supervisor with higher output current capability.
3. TL7712ACPWR: Dual voltage supervisor with independent threshold voltage settings.
4. TL7715ACPWR: Voltage supervisor with adjustable threshold voltage and higher output current.

(Note: This list is not exhaustive and there may be other alternative models available in the market.)

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