TPS3125J18DBVRG4

Product Overview

Category

The TPS3125J18DBVRG4 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 voltage levels in electronic systems. It ensures that the voltage remains within a specified range, triggering appropriate actions if it goes beyond the set limits.

Characteristics

• Voltage monitoring: The TPS3125J18DBVRG4 can monitor voltages in the range of 0.8V to 5.5V.
• Adjustable threshold: The device allows users to set the desired voltage threshold for monitoring.
• Precision: It offers high accuracy in voltage monitoring with low voltage hysteresis.
• Low power consumption: The TPS3125J18DBVRG4 operates on low power, making it suitable for battery-powered applications.
• Small package size: This IC comes in a small SOT-23 package, enabling space-efficient designs.

Package and Quantity

The TPS3125J18DBVRG4 is available in a SOT-23 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Operating temperature range: -40°C to +85°C
• Quiescent current: 3 µA (typical)
• Threshold voltage accuracy: ±1.5%
• Output type: Active-low push-pull

Pin Configuration

The TPS3125J18DBVRG4 has the following pin configuration:

____ EN | | VDD GND | | RESET OUT |____| THRES

• EN: Enable pin for activating or deactivating the device.
• VDD: Power supply pin.
• GND: Ground pin.
• RESET: Output pin indicating the voltage status.
• THRES: Threshold adjustment pin for setting the desired voltage level.

Functional Features

1. Voltage Monitoring: The TPS3125J18DBVRG4 continuously monitors the input voltage and compares it with the threshold voltage set by the user.
2. Reset Generation: If the monitored voltage falls below the threshold, the device generates a reset signal to initiate appropriate actions.
3. Adjustable Threshold: The threshold voltage can be adjusted using an external resistor connected to the THRES pin.
4. Hysteresis: The IC incorporates hysteresis to prevent oscillation near the threshold voltage, ensuring stable operation.

Advantages and Disadvantages

Advantages

• High accuracy in voltage monitoring.
• Low power consumption, suitable for battery-powered applications.
• Adjustable threshold for flexibility.
• Small package size allows for space-efficient designs.

Disadvantages

• Limited voltage range (0.8V to 5.5V).
• Requires an external resistor for threshold adjustment.

Working Principles

The TPS3125J18DBVRG4 operates based on a voltage comparator principle. It compares the input voltage with the threshold voltage set by the user. If the input voltage falls below the threshold, the device generates a reset signal, indicating a voltage fault. This reset signal can be used to trigger system-level actions, such as shutting down or resetting the circuit.

Application Field Plans

The TPS3125J18DBVRG4 finds applications in various fields where voltage monitoring is critical. Some of the potential application areas include:

1. Battery-Powered Devices: Portable electronic devices, such as smartphones, tablets, and wearables, benefit from voltage supervision to ensure optimal battery usage and prevent damage due to voltage fluctuations.
2. Industrial Control Systems: Voltage monitoring is crucial in industrial control systems to maintain stable operation and prevent damage to sensitive equipment.
3. Automotive Electronics: The TPS3125J18DBVRG4 can be used in automotive applications to monitor voltage levels in various subsystems, ensuring reliable performance and preventing potential failures.

Alternative Models

1. TPS3125J18DBVT: Similar to TPS3125J18DBVRG4 but comes in a SOT-23 package with a different pin configuration.
2. TPS3125J18DBVTE4: Another variant of the TPS3125J18DBVRG4, offering similar functionality but with extended temperature range.

These alternative models provide similar voltage monitoring capabilities and can be considered as substitutes for the TPS3125J18DBVRG4.

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