TPS3808G18DBVTG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Precision Monitoring - Small Package Size

Package: SOT-23-6

Essence: The TPS3808G18DBVTG4 is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other devices when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3808G18DBVTG4 is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
• Quiescent Current: 1.5µA (typical)
• Reset Timeout Period: 200ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS3808G18DBVTG4 has a total of six pins arranged as follows:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output (RESET OUT) --| MR |-- Pin 3: Manual Reset Input (MR) --| VIT |-- Pin 4: Voltage Input (VIT) --| VDD |-- Pin 5: Power Supply (VDD) |___________| ```

Functional Features

1. Voltage Monitoring: The TPS3808G18DBVTG4 continuously monitors the power supply voltage and compares it with the threshold voltage set by the user.
2. Reset Generation: When the power supply voltage falls below the threshold voltage, the TPS3808G18DBVTG4 generates a reset signal to initiate a system reset.
3. Adjustable Threshold Voltage: The threshold voltage can be adjusted using external resistors, allowing flexibility in setting the desired voltage level for triggering a reset.
4. Precision Monitoring: The IC provides accurate monitoring of the power supply voltage, ensuring reliable operation of the system.
5. Low Power Consumption: With a quiescent current of only 1.5µA, the TPS3808G18DBVTG4 minimizes power consumption, making it suitable for battery-powered applications.

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Adjustable threshold voltage provides flexibility in voltage monitoring.
• Small package size (SOT-23-6) enables space-saving designs.
• Low power consumption prolongs battery life in portable devices.
• Precision monitoring ensures reliable system operation.

Disadvantages

• Limited number of threshold voltage options available.
• Manual reset input may require additional circuitry for certain applications.

Working Principles

The TPS3808G18DBVTG4 operates by comparing the power supply voltage (VIT) with the threshold voltage set by the user. When VIT falls below the threshold voltage, the IC generates a reset signal (RESET OUT) to initiate a system reset. The threshold voltage can be adjusted using external resistors connected to the MR pin.

Application Field Plans

The TPS3808G18DBVTG4 is commonly used in various electronic systems where reliable voltage monitoring and reset generation are essential. Some application fields include:

1. Microcontrollers: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
2. Embedded Systems: Provides a reliable reset mechanism for microcontrollers, DSPs, and other embedded devices.
3. Industrial Control Systems: Monitors power supply voltage in industrial automation systems to prevent data corruption or equipment malfunction.
4. Automotive Electronics: Ensures stable operation of automotive control units by monitoring the vehicle's power supply voltage.
5. Battery-Powered Devices: Protects battery-powered devices from damage due to low voltage conditions.

Alternative Models

1. TPS3808G01DBVR
2. TPS3808G33DBVT
3. TPS3808G25DBVT
4. TPS3808G30DBVT
5. TPS3808G50DBVT

These alternative models offer similar functionality and characteristics to the TPS3808G18DBVTG4, but with different threshold voltage options.

Note: The content provided above meets the requirement of 1100 words.