TPS3125J12DBVRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Quiescent Current - Wide Supply Voltage Range - Adjustable Reset Threshold - Manual Reset Input - Power-On Reset Output - Watchdog Timer - Active-Low Push-Pull Reset Output - Small Package Size

Package: SOT-23-6

Essence: The TPS3125J12DBVRG4 is a voltage supervisor IC designed to monitor the power supply voltage of electronic systems and provide reset signals when necessary.

Packaging/Quantity: The TPS3125J12DBVRG4 is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 6V
• Quiescent Current: 3µA (typical)
• Reset Threshold Voltage: Adjustable from 0.4V to 5V
• Manual Reset Input Threshold Voltage: 0.4V (typical)
• Watchdog Timeout Period: 1.6s (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS3125J12DBVRG4 has a total of 6 pins:

1. GND (Ground)
2. MR (Manual Reset Input)
3. VDD (Supply Voltage)
4. RESET (Reset Output)
5. WDI (Watchdog Input)
6. NC (No Connect)

Functional Features

1. Voltage Monitoring: The TPS3125J12DBVRG4 continuously monitors the supply voltage and generates a reset signal if the voltage falls below the adjustable threshold.
2. Manual Reset Input: The MR pin allows for manual resetting of the system by pulling it low.
3. Power-On Reset Output: The RESET pin provides a reset signal during power-up and power-down sequences.
4. Watchdog Timer: The TPS3125J12DBVRG4 includes a watchdog timer that generates a reset signal if the WDI pin is not toggled within the specified timeout period.
5. Active-Low Push-Pull Reset Output: The RESET pin provides an active-low push-pull reset signal to the system.
6. Low Quiescent Current: The IC has a low quiescent current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for versatile use in various electronic systems. - Adjustable reset threshold provides flexibility in setting the desired voltage level for triggering a reset. - Small package size (SOT-23-6) enables space-saving designs. - Low quiescent current minimizes power consumption.

Disadvantages: - Lack of detailed documentation on specific application examples may require additional research for implementation.

Working Principles

The TPS3125J12DBVRG4 operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. If the voltage falls below the adjustable threshold set by external resistors, the IC generates a reset signal. The manual reset input allows for immediate system reset when required. The watchdog timer ensures system integrity by generating a reset signal if the WDI pin is not toggled within the specified timeout period.

Detailed Application Field Plans

The TPS3125J12DBVRG4 can be used in various applications, including but not limited to: 1. Battery-powered devices 2. Embedded systems 3. Industrial control systems 4. Automotive electronics 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the TPS3125J12DBVRG4 include: 1. TPS3125J18DBVRG4 2. TPS3125J25DBVRG4 3. TPS3125J33DBVRG4 4. TPS3125J50DBVRG4

These models offer similar functionality and characteristics, but with different reset threshold voltages to suit specific application requirements.

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