TPS3103E15DBVR

Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a power supply - Generates a reset signal when the voltage falls below a certain threshold - Prevents system malfunction due to low voltage conditions

Package: SOT-23-5

Essence: The TPS3103E15DBVR is a voltage supervisor IC designed to monitor the voltage level of a power supply and provide a reset signal when the voltage falls below a specific threshold. It ensures the proper functioning of electronic systems by preventing malfunctions caused by low voltage conditions.

Packaging/Quantity: The TPS3103E15DBVR is available in a small SOT-23-5 package, which contains one IC per package.

Specifications

• Supply Voltage Range: 1.2V to 6V
• Threshold Voltage Options: 1.5V
• Reset Timeout Period: 200ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.8µA (typical)
• Power-On Reset Delay: 20ms (typical)

Pin Configuration

The TPS3103E15DBVR has a total of five pins:

1. GND: Ground pin
2. VDD: Positive supply voltage pin
3. MR: Manual reset input pin
4. RESET: Active-low reset output pin
5. TH: Threshold voltage selection pin

Functional Features

1. Voltage Monitoring: The TPS3103E15DBVR continuously monitors the voltage level of the power supply.
2. Reset Signal Generation: When the voltage falls below the threshold voltage set by the TH pin, the TPS3103E15DBVR generates an active-low reset signal on the RESET pin.
3. Manual Reset: The MR pin allows for manual reset, overriding the voltage monitoring function.
4. Reset Timeout Period: The TPS3103E15DBVR provides a reset signal for a fixed period of 200ms after the voltage rises above the threshold voltage.
5. Low Power Consumption: With a quiescent current of only 1.8µA, the TPS3103E15DBVR minimizes power consumption.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package for space-constrained applications - Wide supply voltage range allows for versatile use - Low quiescent current minimizes power consumption - Manual reset option provides flexibility in system design

Disadvantages: - Fixed reset timeout period may not be suitable for all applications - Limited threshold voltage options (only 1.5V available)

Working Principles

The TPS3103E15DBVR operates by continuously monitoring the voltage level of the power supply. When the voltage falls below the threshold voltage set by the TH pin, the IC generates an active-low reset signal on the RESET pin. This reset signal remains active for a fixed period of 200ms after the voltage rises above the threshold voltage. The MR pin allows for manual reset, overriding the voltage monitoring function.

Application Field Plans

The TPS3103E15DBVR is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper operation and prevents data corruption during power fluctuations.
2. Embedded Systems: Protects sensitive components from damage caused by low voltage conditions.
3. Battery-Powered Devices: Monitors battery voltage to prevent deep discharge and extend battery life.
4. Industrial Control Systems: Provides reliable reset functionality to maintain system integrity.
5. Automotive Electronics: Ensures stable power supply for critical automotive systems.

Alternative Models

1. TPS3103E18DBVR: Similar to TPS3103E15DBVR, but with a threshold voltage of 1.8V.
2. TPS3103E25DBVR: Similar to TPS3103E15DBVR, but with a threshold voltage of 2.5V.
3. TPS3103E33DBVR: Similar to TPS3103E15DBVR, but with a threshold voltage of 3.3V.

These alternative models provide different threshold voltage options to suit specific application requirements.

In conclusion, the TPS3103E15DBVR is an integrated circuit voltage supervisor that ensures proper system operation by monitoring the power supply voltage and generating a reset signal when necessary. With its compact package, wide supply voltage range, and low power consumption, it finds applications in various electronic systems. However, its fixed reset timeout period and limited threshold voltage options should be considered when selecting the appropriate model for a specific application.