TLC7705QPWG4

Product Overview

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

Specifications

• Supply Voltage Range: 1.2V to 6V
• Operating Temperature Range: -40°C to +125°C
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V, 4.63V, 4.88V, 5.63V, 5.88V
• Reset Timeout Period Options: 20ms, 140ms, 270ms, 560ms, 1100ms, 2200ms, 4500ms, 9000ms
• Quiescent Current: 10µA (typical)

Pin Configuration

The TLC7705QPWG4 has the following pin configuration:

```

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| | --| VDD GND |-- Pin 1: Supply Voltage (VDD) --| RESET OUT |-- Pin 2: Reset Output --| THRESHOLD |-- Pin 3: Threshold Voltage Selection --| TIMEOUT |-- Pin 4: Timeout Period Selection --| MR |-- Pin 5: Manual Reset Input --| GND |-- Pin 6: Ground (GND) --| VDD |-- Pin 7: Supply Voltage (VDD) --| RESET IN |-- Pin 8: Reset Input |___________| ```

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides a manual reset input for external reset control.
• Offers a wide range of threshold voltage and timeout period options for flexibility in different applications.
• Low quiescent current consumption makes it suitable for battery-powered devices.
• Precision circuitry ensures accurate monitoring and reliable reset generation.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Multiple threshold voltage and timeout period options provide versatility. - Low-power consumption extends battery life in portable devices. - Precision circuitry ensures reliable operation. - Compact package saves board space.

Disadvantages: - Limited number of threshold voltage and timeout period options compared to some other models. - Not suitable for high-voltage applications.

Working Principles

The TLC7705QPWG4 is designed to monitor the supply voltage of a system. It compares the voltage at the Threshold pin (Pin 3) with an internal reference voltage. When the supply voltage drops below the selected threshold, the Reset Output pin (Pin 2) is driven low, indicating a reset condition. The Timeout pin (Pin 4) determines the duration for which the reset signal remains active after the supply voltage returns to normal.

The device also features a Manual Reset Input (MR) that allows an external signal to force a reset condition. This provides additional control over the reset functionality.

Detailed Application Field Plans

The TLC7705QPWG4 is commonly used in various electronic systems where reliable voltage monitoring and reset generation are critical. Some typical application fields include:

1. Microcontrollers and Microprocessors: Ensures proper initialization and reliable operation by monitoring the power supply voltage and generating a reset signal if necessary.
2. Industrial Control Systems: Provides fault detection and recovery capabilities by monitoring the supply voltage and initiating a reset when required.
3. Automotive Electronics: Ensures safe and reliable operation of automotive systems by monitoring the battery voltage and generating a reset signal in case of voltage drops.
4. Portable Devices: Extends battery life by monitoring the power supply voltage and initiating a reset to prevent improper operation during low voltage conditions.

Detailed and Complete Alternative Models

1. TL7705ACP - Similar functionality with different package (PDIP-8).
2. MAX809 - Voltage supervisor IC with additional features like manual reset input and adjustable reset threshold.
3. ADM708 - Precision voltage monitor with adjustable reset timeout period and watchdog timer functionality.

These alternative models offer similar voltage monitoring and reset generation capabilities, but may have different specifications and package options to suit specific application requirements.

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