TL7757IDG4

Product Overview

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

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options: 2.32V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Quiescent Current: 10µA (typical)

Pin Configuration

The TL7757IDG4 IC has the following pin configuration:

1. GND (Ground)
2. MR (Master Reset)
3. VCC (Supply Voltage)
4. RESET (Reset Output)
5. RESET (Reset Output)
6. RESET (Reset Output)
7. RESET (Reset Output)
8. RESET (Reset Output)

Functional Features

• Precision monitoring of supply voltage levels
• Generates a reset signal when voltage falls below the threshold
• Adjustable reset threshold voltage options
• Configurable reset timeout period options
• Open-drain reset output for easy interfacing with other devices
• Low quiescent current consumption for power efficiency

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems
• Precise monitoring ensures reliable operation
• Adjustable threshold and timeout options provide flexibility
• Low-power consumption extends battery life
• Open-drain output simplifies integration with other components

Disadvantages

• Limited reset threshold and timeout options may not suit all applications
• Requires external components for proper operation
• Sensitivity to noise and voltage fluctuations in the supply

Working Principles

The TL7757IDG4 is a voltage supervisor IC that continuously monitors the supply voltage. It compares the voltage level with a preset threshold value. When the voltage falls below the threshold, the IC generates a reset signal. The reset signal remains active until the voltage rises above the threshold or a configurable timeout period elapses.

The open-drain reset output allows easy interfacing with microcontrollers, processors, or other devices. The low quiescent current consumption ensures minimal power drain during normal operation.

Detailed Application Field Plans

The TL7757IDG4 finds applications in various fields where reliable voltage monitoring and reset generation are critical. Some potential application areas include:

1. Microcontroller Systems: Ensuring proper system initialization and preventing erratic behavior during power-up.
2. Industrial Control Systems: Monitoring power supply integrity to prevent damage to sensitive equipment.
3. Automotive Electronics: Resetting microcontrollers or sensors in case of voltage drops or transients.
4. Battery-Powered Devices: Protecting battery life by initiating shutdown or hibernation modes when voltage levels become critical.
5. Communication Systems: Maintaining stable operation by resetting communication modules during power disturbances.

Detailed and Complete Alternative Models

Some alternative models to the TL7757IDG4 that offer similar functionality are:

1. MAX809: Low-power voltage supervisor with adjustable threshold and timeout options.
2. ADM708: Precision voltage monitor with a wide supply voltage range and adjustable reset threshold.
3. TPS3839: Ultra-low-power voltage supervisor with programmable reset timeout and manual reset input.
4. LTC2937: Dual-supply voltage supervisor with adjustable thresholds and watchdog timer functionality.
5. MCP1316: Low-power voltage supervisor with fixed threshold options and a wide operating temperature range.

These alternative models provide options for different voltage ranges, reset thresholds, timeout periods, and additional features to suit specific application requirements.

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