TL7705AIDRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Reset Generation
• Package: SOIC-8 (Small Outline Integrated Circuit), DFN-8 (Dual Flat No-Lead)
• Essence: Monolithic integrated circuit designed to monitor the power supply voltage of electronic systems and provide a reset signal during power-up, power-down, or brownout conditions.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 2.7V to 18V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.3V, 4.38V, 4.63V, 4.75V, 4.88V, 5V
• Reset Timeout Period Options: 20ms, 140ms, 270ms, 560ms, 1.12s, 2.25s, 4.5s, 9s
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TL7705AIDRE4 has the following pin configuration:

```

---

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

Functional Features

• Monitors the power supply voltage and generates a reset signal when the voltage falls below a specified threshold.
• Provides a reset output that remains active-low until the supply voltage rises above the threshold and the reset timeout period elapses.
• Offers various threshold voltage and reset timeout period options for flexibility in different applications.
• Includes a manual reset input (MR) to override the reset output and force a reset condition.

Advantages and Disadvantages

Advantages: - Low-power consumption - Precision monitoring of power supply voltage - Wide operating voltage range - Multiple threshold voltage and reset timeout period options - Manual reset capability

Disadvantages: - Limited number of available package options - Not suitable for high-voltage applications

Working Principles

The TL7705AIDRE4 operates by continuously monitoring the voltage at the SENSE pin. When the voltage falls below the selected threshold, the reset output becomes active-low, indicating a reset condition. The reset output remains low until the supply voltage rises above the threshold and the reset timeout period elapses. The manual reset input can be used to force a reset condition regardless of the monitored voltage.

Detailed Application Field Plans

The TL7705AIDRE4 is commonly used in various electronic systems where reliable power supply monitoring and reset generation are critical. Some application fields include:

1. Microcontrollers and Microprocessors
2. Embedded Systems
3. Industrial Control Systems
4. Automotive Electronics
5. Power Management Circuits
6. Battery-Powered Devices
7. Communication Equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL7705AIDRE4 include:

1. MAX809: Voltage Supervisors with Manual Reset Input
2. ADM708: Precision Voltage Monitors with Adjustable Threshold
3. TPS3808: Ultra-Low Power Voltage Supervisors with Programmable Delay
4. LTC2910: Dual Voltage Supervisors with Adjustable Threshold and Timeout

These alternative models can be considered based on specific application requirements and design constraints.

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