TL7700CDGKRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Precision, Low Power Consumption
• Package: 8-Pin VSSOP
• Essence: Monitors and controls the voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 18V
• Threshold Voltage Options: 1.2V, 1.3V, 1.8V, 2.5V, 3.3V, 5V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)
• Output Type: Active-Low, Open Drain
• Reset Timeout Period: Adjustable or Fixed (140ms typical)

Detailed Pin Configuration

The TL7700CDGKRG4 has the following pin configuration:

1. GND: Ground reference for the IC.
2. MR: Master Reset input. Active-low reset signal.
3. VCC: Positive supply voltage.
4. RESET: Output pin that indicates the system is in a reset state.
5. THRESHOLD: Input pin to set the desired threshold voltage.
6. SENSE: Voltage monitoring input pin.
7. GATE: Output pin used to control external devices.
8. NC: No connection.

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides an active-low reset output to indicate the system is in a reset state.
• Offers adjustable or fixed reset timeout period options.
• Low quiescent current consumption ensures minimal power usage.
• Open-drain output allows easy interfacing with other devices.
• Wide supply voltage range enables compatibility with various systems.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Low power consumption prolongs battery life in portable applications. - Flexible threshold voltage options cater to different system requirements. - Small package size saves board space. - Easy integration due to open-drain output.

Disadvantages: - Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage. - Limited reset timeout period options may not suit all application scenarios.

Working Principles

The TL7700CDGKRG4 operates by continuously monitoring the input voltage using an internal voltage reference. When the voltage falls below the set threshold, the IC generates a reset signal, which can be used to initiate a system reset or control external devices. The reset timeout period determines how long the reset signal remains active after the voltage rises above the threshold.

Detailed Application Field Plans

The TL7700CDGKRG4 finds applications in various electronic systems where voltage supervision is critical. Some specific application fields include:

1. Microcontroller Systems: Ensures proper initialization and safe operation of microcontrollers by monitoring the power supply voltage.
2. Industrial Control Systems: Provides reliable reset signals for industrial control units, preventing erratic behavior during power fluctuations.
3. Automotive Electronics: Monitors the battery voltage and triggers a reset when it drops below a certain level, protecting sensitive automotive electronics.
4. Power Management Systems: Enables efficient power management by monitoring voltage levels and controlling power switches accordingly.
5. Medical Devices: Ensures the safe operation of medical equipment by monitoring critical voltage levels and initiating appropriate actions.

Detailed and Complete Alternative Models

1. TL7702ACD: Dual Voltage Supervisor with Adjustable Reset Timeout
2. TL7705ACD: Precision Voltage Supervisor with Fixed Reset Timeout
3. TL7709ACD: Quad Voltage Supervisor with Adjustable Reset Timeout
4. TL7712ACD: Dual Voltage Supervisor with Programmable Threshold

These alternative models offer similar functionality to the TL7700CDGKRG4 but may have different pin configurations, package options, or additional features.

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