TPS3125G15DBVTG4

Product Overview

Category

The TPS3125G15DBVTG4 belongs to the category of integrated circuits (ICs) and specifically falls under the voltage supervisors or monitors.

Use

This product is primarily used for monitoring and supervising the voltage levels in electronic systems. It ensures that the voltage remains within a specified range, providing stability and protection to the system.

Characteristics

• Voltage monitoring: The TPS3125G15DBVTG4 can monitor voltages ranging from 0.8V to 5.5V.
• Adjustable threshold: The device allows users to set the desired voltage threshold for monitoring.
• Low power consumption: It operates with low quiescent current, making it suitable for battery-powered applications.
• Reset output: The IC provides a reset signal when the monitored voltage falls below the threshold, allowing for system recovery.

Package and Quantity

The TPS3125G15DBVTG4 is available in a small SOT-23 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Operating temperature range: -40°C to +85°C
• Quiescent current: 3µA (typical)
• Threshold accuracy: ±1.5%
• Reset timeout period: 200ms (typical)

Pin Configuration

The TPS3125G15DBVTG4 has a total of three pins:

1. VDD: This pin is connected to the supply voltage (VDD) and should be decoupled with a capacitor for stable operation.
2. GND: This pin is connected to the ground reference (GND) of the system.
3. RESET: This pin outputs a reset signal when the monitored voltage falls below the threshold.

Functional Features

• Undervoltage detection: The TPS3125G15DBVTG4 continuously monitors the voltage level and triggers a reset signal if it falls below the set threshold.
• Adjustable threshold: Users can configure the desired voltage threshold using external resistors.
• Power-on reset: The IC generates a reset signal upon power-up, ensuring a controlled start for the system.
• Manual reset input: An external push-button can be connected to the RESET pin to manually trigger a system reset.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Low quiescent current minimizes power consumption.
• Adjustable threshold provides flexibility in voltage monitoring.
• Small package size enables space-saving designs.

Disadvantages

• Limited to voltage monitoring applications only.
• Requires external components (resistors and capacitors) for proper operation.

Working Principles

The TPS3125G15DBVTG4 operates by comparing the monitored voltage with the user-defined threshold. If the voltage drops below the threshold, the device asserts the RESET pin, indicating an undervoltage condition. Once the voltage rises above the threshold, the reset signal is released, allowing the system to resume normal operation.

Application Field Plans

The TPS3125G15DBVTG4 finds applications in various electronic systems where voltage monitoring is critical. Some potential application fields include:

1. Battery-powered devices: Ensuring stable voltage levels in portable electronics such as smartphones, tablets, and wearables.
2. Industrial control systems: Monitoring voltage in PLCs (Programmable Logic Controllers), motor drives, and power supplies.
3. Automotive electronics: Voltage supervision in automotive ECUs (Electronic Control Units), infotainment systems, and lighting controls.
4. IoT (Internet of Things) devices: Maintaining voltage stability in smart home automation systems, sensors, and wireless communication modules.

Alternative Models

1. TPS3125G18DBVTG4: Similar to TPS3125G15DBVTG4 but with a higher voltage threshold.
2. TPS3126G15DBVTG4: Offers additional features like adjustable reset timeout period and manual reset input.

These alternative models can be considered based on specific application requirements and desired functionality.

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