TL7700CPWRE4

Product Overview

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

Specifications

The TL7700CPWRE4 is a voltage supervisor IC designed to monitor the power supply voltage of electronic systems. It ensures proper system operation by generating a reset signal when the monitored voltage falls below a predetermined threshold.

Key specifications of the TL7700CPWRE4 include:

• 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: Adjustable from 1ms to 10s
• Quiescent Current: 20µA (typical)

Pin Configuration

The TL7700CPWRE4 features an 8-pin TSSOP package with the following pin configuration:

1. GND - Ground
2. VDD - Supply Voltage
3. MR - Manual Reset Input
4. RESET - Reset Output
5. TH - Threshold Selection Input
6. CT - Capacitor Connection for Reset Timeout
7. TRIG - Trigger Output
8. VCC - Supply Voltage for Trigger Output

Functional Features

The TL7700CPWRE4 offers several functional features that make it suitable for voltage monitoring applications:

1. Precision Monitoring: The IC provides accurate monitoring of the power supply voltage, ensuring reliable system operation.
2. Low Power Consumption: With a quiescent current of only 20µA, the TL7700CPWRE4 minimizes power consumption, making it suitable for battery-powered devices.
3. Adjustable Reset Timeout: The reset timeout period can be adjusted to meet specific system requirements, allowing flexibility in controlling the reset signal duration.
4. Manual Reset Input: The MR pin allows for manual triggering of the reset signal, providing additional control over system reset operations.

Advantages and Disadvantages

Advantages of using the TL7700CPWRE4 include:

• High precision voltage monitoring
• Low power consumption
• Adjustable reset timeout
• Manual reset capability

However, there are some limitations to consider:

• Limited number of available threshold voltage options
• Requires an external capacitor for reset timeout configuration

Working Principles

The TL7700CPWRE4 operates based on a voltage comparator circuit that compares the monitored supply voltage with a reference voltage set by the TH pin. When the supply voltage falls below the threshold voltage, the RESET output is activated, generating a reset signal. The reset signal remains active until the supply voltage rises above the threshold voltage or a timeout period elapses.

Application Field Plans

The TL7700CPWRE4 finds applications in various electronic systems where voltage monitoring and reliable system reset functionality are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper system initialization and preventing erratic behavior during power-up.
2. Industrial Control Systems: Monitoring power supply voltages in critical control circuits to prevent malfunctions.
3. Automotive Electronics: Providing voltage supervision for automotive systems, such as engine control units and safety modules.
4. Telecommunications Equipment: Ensuring stable operation of communication devices by monitoring power supply voltages.

Alternative Models

If the TL7700CPWRE4 does not meet specific requirements, alternative models with similar functionality include:

1. TL7702CPWRE4: Dual Voltage Supervisor IC with adjustable reset timeout and threshold voltage options.
2. TL7705ACPWRE4: Voltage Supervisor IC with a wider supply voltage range and additional features like watchdog timer and power-on reset.

These alternative models can be considered based on specific application needs and desired specifications.

Please note that the above content is a brief overview of the TL7700CPWRE4 and should be supplemented with detailed datasheet information for comprehensive understanding and usage guidance.