TPS3126E15DBVTG4 - English Editing Encyclopedia Entry

Product Overview

Category

The TPS3126E15DBVTG4 belongs to the category of integrated circuits (ICs) and specifically falls under the voltage supervisors or reset ICs.

Use

This product is primarily used for monitoring and controlling the power supply voltage in electronic systems. It ensures that the voltage remains within a specified range, triggering a reset signal if it falls below or exceeds the desired threshold.

Characteristics

• Voltage supervision: Monitors power supply voltage levels.
• Reset generation: Generates a reset signal when voltage thresholds are violated.
• Precision: Provides accurate voltage monitoring with low tolerance.
• Low power consumption: Operates efficiently with minimal power requirements.
• Small form factor: Packaged in a compact DBV package for space-constrained applications.

Package and Quantity

The TPS3126E15DBVTG4 is packaged in a DBV (SOT-23) package, which offers excellent thermal performance and ease of handling. It is typically available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Threshold voltage options: 1.5V
• Reset timeout period: Adjustable from 1ms to 640ms
• Operating temperature range: -40°C to +85°C
• Quiescent current: 3µA (typical)

Pin Configuration

The TPS3126E15DBVTG4 features a standard SOT-23 package with three pins:

1. VDD: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Output pin for the reset signal.

Functional Features

1. Voltage Monitoring: The TPS3126E15DBVTG4 continuously monitors the power supply voltage to ensure it remains within the desired range.
2. Reset Generation: If the voltage falls below or exceeds the specified thresholds, the IC generates a reset signal to initiate system recovery or shutdown.
3. Adjustable Timeout Period: The reset timeout period can be adjusted according to the application requirements, allowing flexibility in response time.
4. Hysteresis: The device incorporates hysteresis to prevent false triggering due to voltage fluctuations near the threshold levels.
5. Power-On Reset: The IC provides a power-on reset signal during system startup, ensuring a controlled and reliable initialization.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring ensures system stability and reliability.
• Adjustable timeout period allows customization for different applications.
• Low power consumption minimizes energy usage and extends battery life.
• Small form factor enables integration into space-constrained designs.
• Power-on reset feature ensures proper system initialization.

Disadvantages

• Limited threshold voltage options may not cater to all voltage level requirements.
• Lack of built-in protection features against voltage spikes or transients.

Working Principles

The TPS3126E15DBVTG4 operates by comparing the power supply voltage with the internally set threshold voltage. When the voltage falls below the threshold, the reset output is activated, signaling a fault condition. Conversely, if the voltage exceeds the threshold, the reset output is triggered again, indicating an overvoltage situation. The adjustable timeout period determines how long the reset signal remains active after the voltage returns to the normal range.

Detailed Application Field Plans

The TPS3126E15DBVTG4 finds extensive use in various electronic systems that require reliable power supply monitoring and reset functionality. Some notable application fields include:

1. Microcontrollers and Microprocessors: Ensures stable voltage supply to critical components, preventing data corruption or system crashes.
2. Industrial Automation: Monitors power supply integrity in control systems, preventing malfunctions and ensuring safe operation.
3. Automotive Electronics: Protects sensitive electronic modules from voltage fluctuations, enhancing overall system reliability.
4. Medical Devices: Ensures consistent power supply to critical medical equipment, minimizing the risk of errors or failures.
5. Consumer Electronics: Provides voltage supervision in devices such as smartphones, tablets, and gaming consoles, enhancing user experience and preventing data loss.

Detailed Alternative Models

1. TPS3125E15DBVTG4: Similar to TPS3126E15DBVTG4 but with a different threshold voltage option (1.5V).
2. TPS3128E15DBVTG4: Offers a higher threshold voltage option (1.8V) for applications requiring a different voltage range.
3. TPS3129E15DBVTG4: Provides an adjustable timeout period up to 1280ms, catering to applications with longer recovery times.

These alternative models offer similar functionality with slight variations in threshold voltage options and timeout periods, allowing