TPS3705-50DR

Product Overview

Category

The TPS3705-50DR belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and supervising voltage levels in electronic systems.

Characteristics

• Voltage threshold: 5.0V
• Supply voltage range: 1.8V to 18V
• Low quiescent current: 3µA (typical)
• Adjustable hysteresis
• Open-drain output
• Wide temperature range: -40°C to +125°C
• Small package size: SOIC-8

Package and Quantity

The TPS3705-50DR is available in a small outline integrated circuit (SOIC) package with eight pins. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply voltage range: 1.8V to 18V
• Threshold voltage accuracy: ±1.5%
• Quiescent current: 3µA (typical)
• Operating temperature range: -40°C to +125°C
• Output type: Open-drain
• Power-on reset delay time: 20ms (typical)

Pin Configuration

The TPS3705-50DR has the following pin configuration:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| VIN RST |-- Pin 2: Reset (RST) --| VIT OUT |-- Pin 3: Output (OUT) --| VDD GND |-- Pin 4: Ground (GND) |___________| ```

Functional Features

• Voltage monitoring: The TPS3705-50DR continuously monitors the input voltage and provides a reset signal when it falls below the specified threshold.
• Adjustable hysteresis: The device allows the user to set the voltage threshold and hysteresis levels according to their specific requirements.
• Open-drain output: The open-drain output provides flexibility in connecting to different systems and devices.
• Low quiescent current: With a typical quiescent current of only 3µA, the TPS3705-50DR minimizes power consumption.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows for compatibility with various electronic systems.
• Adjustable hysteresis enables customization for different applications.
• Low quiescent current reduces power consumption.
• Small package size facilitates space-constrained designs.

Disadvantages

• Lack of built-in overvoltage protection.
• Limited output drive capability.

Working Principles

The TPS3705-50DR operates by comparing the input voltage (VIN) with the internally set threshold voltage. When VIN falls below the threshold, the reset output (RST) is activated, indicating a low-voltage condition. The reset remains active until VIN rises above the threshold voltage plus the hysteresis level.

Detailed Application Field Plans

The TPS3705-50DR finds application in various fields, including: 1. Power supply monitoring in industrial control systems. 2. Battery management systems in automotive electronics. 3. Overvoltage protection circuits in consumer electronics. 4. Voltage supervision in communication equipment. 5. Fault detection in medical devices.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TPS3705-50DR include: - TPS3705-33DR: Threshold voltage of 3.3V. - TPS3705-25DR: Threshold voltage of 2.5V. - TPS3705-15DR: Threshold voltage of 1.5V.

These alternative models provide options for different voltage threshold requirements in voltage monitoring applications.

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