TL7705BIDR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a predetermined threshold - Prevents erratic behavior or data corruption during power-up and power-down sequences

Package: SOIC (Small Outline Integrated Circuit)

Essence: The TL7705BIDR is a voltage supervisor IC that ensures stable operation of electronic systems by monitoring the power supply voltage and generating a reset signal when necessary.

Packaging/Quantity: The TL7705BIDR is available in a standard SOIC package. It is typically sold in reels containing 2500 units.

Specifications

• 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: 200ms (min)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TL7705BIDR has a total of 8 pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (RESET OUT) --| THRESHOLD |-- Pin 3: Threshold Voltage Selection (THRESHOLD) --| SENSE IN |-- Pin 4: Voltage Sense Input (SENSE IN) --| | --| | --| | --| | |___________| ```

Functional Features

1. Voltage Monitoring: The TL7705BIDR continuously monitors the power supply voltage and compares it with the selected threshold voltage.
2. Reset Signal Generation: When the power supply voltage falls below the threshold, the TL7705BIDR generates a reset signal to initiate a system reset.
3. Adjustable Threshold Voltage: The threshold voltage can be set using an external resistor divider network connected to the THRESHOLD pin.
4. Power-On Reset Delay: The TL7705BIDR provides a delay of 200ms (minimum) after power is applied before generating the reset signal. This ensures stable power-up sequences.

Advantages

• Provides reliable power supply monitoring and reset generation for electronic systems.
• Adjustable threshold voltage allows flexibility in different applications.
• Low power consumption.
• Wide operating temperature range enables usage in various environments.
• Compact SOIC package facilitates easy integration into circuit designs.

Disadvantages

• Limited number of available threshold voltage options.
• Lack of built-in hysteresis may result in potential noise-related issues.

Working Principles

The TL7705BIDR operates by comparing the power supply voltage with the selected threshold voltage. If the power supply voltage drops below the threshold, the internal comparator triggers and generates a reset signal. This reset signal remains active until the power supply voltage rises above the threshold and the reset timeout period elapses.

Application Field Plans

The TL7705BIDR finds application in various fields where stable power supply monitoring and reset generation are critical. Some common application areas include:

1. Microcontrollers and Microprocessors
2. Industrial Control Systems
3. Automotive Electronics
4. Power Management Systems
5. Communication Equipment

Alternative Models

1. MAX809: Similar voltage supervisor IC with adjustable threshold voltage and built-in hysteresis.
2. ADM6316: Voltage monitor and reset generator with additional watchdog timer functionality.
3. TPS3808: Ultra-low power voltage supervisor IC with adjustable threshold voltage and wide supply voltage range.

These alternative models offer similar functionality to the TL7705BIDR and can be considered as substitutes based on specific application requirements.

In conclusion, the TL7705BIDR is a voltage supervisor IC that ensures stable operation of electronic systems by monitoring the power supply voltage and generating a reset signal when necessary. Its adjustable threshold voltage, compact package, and wide operating temperature range make it suitable for various applications in different fields. However, its limited threshold voltage options and lack of built-in hysteresis may pose some limitations in certain scenarios.