TPS3705-50DGNR

Product Overview

Category

The TPS3705-50DGNR 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
• Accuracy: ±1%
• Supply voltage range: 2.7V to 18V
• Low quiescent current: 10µA (typical)
• Adjustable delay time
• Open-drain output
• Wide temperature range: -40°C to +125°C

Package

The TPS3705-50DGNR comes in a small 8-pin MSOP package.

Essence

This voltage supervisor IC ensures reliable power supply management by monitoring the input voltage and generating an output signal when it falls below or exceeds a predefined threshold.

Packaging/Quantity

The TPS3705-50DGNR is typically available in reels, with 2500 units per reel.

Specifications

• Input voltage range: 2.7V to 18V
• Threshold voltage: 5.0V
• Hysteresis voltage: 100mV
• Quiescent current: 10µA (typical)
• Delay time: Adjustable from 1ms to 100ms
• Output type: Open-drain
• Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

The TPS3705-50DGNR has the following pin configuration:

1. GND (Ground)
2. VDD (Supply voltage)
3. MR (Manual reset input)
4. TH (Threshold voltage input)
5. TR (Delay time adjustment resistor)
6. CT (Delay capacitor)
7. OUT (Output)
8. NC (No connection)

Functional Features

• Voltage monitoring: The TPS3705-50DGNR continuously monitors the input voltage and compares it with the threshold voltage.
• Output signal generation: When the input voltage falls below or exceeds the threshold, the IC generates an output signal on the OUT pin.
• Adjustable delay time: The delay time for the output signal can be adjusted using an external resistor and capacitor.
• Manual reset: The MR pin allows for manual reset of the device.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows for versatile applications.
• Low quiescent current minimizes power consumption.
• Adjustable delay time provides flexibility in system design.
• Open-drain output simplifies interfacing with other devices.

Disadvantages

• Limited to a single threshold voltage (5.0V).
• No built-in overvoltage protection feature.

Working Principles

The TPS3705-50DGNR operates by comparing the input voltage with the threshold voltage set by the TH pin. If the input voltage falls below the threshold, the output pin goes low, indicating an undervoltage condition. Conversely, if the input voltage exceeds the threshold, the output pin goes high, indicating an overvoltage condition. The delay time for the output signal can be adjusted using an external resistor and capacitor connected to the TR and CT pins, respectively.

Detailed Application Field Plans

The TPS3705-50DGNR finds applications in various electronic systems that require reliable voltage monitoring and supervision. Some potential application fields include:

1. Power supply units: Ensuring stable voltage levels in power supplies.
2. Battery-powered devices: Monitoring battery voltage to prevent over-discharge.
3. Industrial control systems: Protecting sensitive components from voltage fluctuations.
4. Automotive electronics: Supervising voltage levels in automotive systems.
5. Home automation: Monitoring power supply integrity in smart home devices.

Detailed and Complete Alternative Models

1. TPS3705-33DGNR: Similar to TPS3705-50DGNR, but with a threshold voltage of 3.3V.
2. TPS3705-25DGNR: Similar to TPS3705-50DGNR, but with a threshold voltage of 2.5V.
3. TPS3705-15DGNR: Similar to TPS3705-50DGNR, but with a threshold voltage of 1.5V.
4. TPS3705-12DGNR: Similar to TPS3705-50DGNR, but with a threshold voltage of 1.2V.

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

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