TPS3705-30DRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Monitors undervoltage and overvoltage conditions - Provides a reset signal when voltage is outside the specified range - Low quiescent current consumption - Wide operating voltage range - Adjustable threshold voltage - Small package size

Package: SOIC-8

Essence: The TPS3705-30DRG4 is an integrated circuit that serves as a voltage supervisor. It ensures that the voltage remains within a specified range and provides a reset signal if the voltage goes beyond the set limits.

Packaging/Quantity: The TPS3705-30DRG4 is available in a small outline integrated circuit (SOIC) package with 8 pins. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2 V to 18 V
• Threshold Voltage Range: 1.2 V to 6 V
• Quiescent Current: 10 µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Output Type: Active-Low, Open Drain

Pin Configuration

The TPS3705-30DRG4 has the following pin configuration:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| VIN RST |-- Pin 2: Reset Output (Active-Low) --| TH NC |-- Pin 3: No Connection (NC) --| VIT VDD |-- Pin 4: Supply Voltage (VDD) --| GND GND |-- Pin 5: Ground (GND) --| GND GND |-- Pin 6: Ground (GND) --| GND GND |-- Pin 7: Ground (GND) --| GND GND |-- Pin 8: Ground (GND) |___________| ```

Functional Features

• Monitors the input voltage and compares it with the threshold voltage set by the user.
• Generates a reset signal when the input voltage falls below or exceeds the specified range.
• The reset output is active-low, meaning it goes low when a reset condition occurs.
• Provides hysteresis to prevent oscillation near the threshold voltage.

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows for versatile applications. - Adjustable threshold voltage provides flexibility in setting the desired voltage limits. - Low quiescent current consumption helps conserve power. - Small package size saves board space.

Disadvantages: - Limited number of pins may restrict the functionality in complex systems. - Lack of built-in protection features against transient voltage spikes.

Working Principles

The TPS3705-30DRG4 operates by continuously monitoring the input voltage. It compares the input voltage with the threshold voltage set by the user using an internal voltage reference. If the input voltage falls below or exceeds the specified range, the integrated circuit generates a reset signal. This signal can be used to initiate system shutdown or recovery procedures.

Detailed Application Field Plans

The TPS3705-30DRG4 finds applications in various fields where voltage supervision is critical. Some of the common application areas include:

1. Power Supply Units: Ensuring stable voltage levels in power supply units to protect sensitive components from damage.
2. Industrial Control Systems: Monitoring voltage levels in industrial control systems to prevent malfunctions and ensure safe operation.
3. Automotive Electronics: Providing voltage supervision in automotive electronics to safeguard critical systems and prevent potential failures.
4. Battery Management Systems: Monitoring battery voltage in BMS to prevent overcharging or deep discharging, thus extending battery life.

Detailed and Complete Alternative Models

1. TPS3705-33DRG4: Similar to TPS3705-30DRG4 but with a different threshold voltage range (3.3 V).
2. TPS3705-50DRG4: Similar to TPS3705-30DRG4 but with a different threshold voltage range (5 V).
3. TPS3705-25DRG4: Similar to TPS3705-30DRG4 but with a different threshold voltage range (2.5 V).

These alternative models offer similar functionality but cater to different voltage threshold requirements.

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