TPS3851G25EQDRBRQ1

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Monitors voltage levels and provides a reset signal when the voltage falls below a specified threshold - Low quiescent current consumption - Wide operating voltage range - Adjustable reset threshold - Programmable delay time - Power-on reset delay time of 200 ms - Small package size for space-constrained applications

Package: VSON-10

Essence: The TPS3851G25EQDRBRQ1 is an integrated circuit that serves as a voltage supervisor. It ensures that the voltage level remains within a specified range and provides a reset signal when the voltage falls below a predetermined threshold.

Packaging/Quantity: The TPS3851G25EQDRBRQ1 is available in a VSON-10 package. The quantity per reel is typically 2500 units.

Specifications

• Supply Voltage Range: 1.6V to 6V
• Reset Threshold Voltage Range: 1.8V to 5V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 2.5µA (typical)
• Reset Timeout Period: 25ms to 10s (programmable)

Pin Configuration

The TPS3851G25EQDRBRQ1 has the following pin configuration:

```

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| | --| RESET | --| GND | --| MR | --| VDD | --| VIT | --| VOT | --| CT | --| RT | --| NC | |___________| ```

Functional Features

1. Voltage Monitoring: The TPS3851G25EQDRBRQ1 continuously monitors the voltage level and compares it to the user-programmed threshold.
2. Reset Signal Generation: When the voltage falls below the threshold, the TPS3851G25EQDRBRQ1 generates a reset signal to indicate a power failure or fault condition.
3. Adjustable Threshold: The reset threshold voltage can be adjusted within a specified range to suit different system requirements.
4. Programmable Delay Time: The TPS3851G25EQDRBRQ1 allows users to program the delay time before generating the reset signal.
5. Power-On Reset Delay: The device incorporates a 200ms power-on reset delay to ensure stable operation during power-up.

Advantages

• Low quiescent current consumption helps conserve power in battery-operated applications.
• Wide operating voltage range makes it compatible with various power supply configurations.
• Adjustable reset threshold and programmable delay time offer flexibility for different system requirements.
• Small package size enables usage in space-constrained applications.

Disadvantages

• Limited number of pins may restrict the device's functionality in complex systems.
• Lack of built-in protection features against voltage spikes or transients.

Working Principles

The TPS3851G25EQDRBRQ1 operates by continuously monitoring the input voltage (VIT) and comparing it to the user-programmed threshold voltage (VOT). If the input voltage falls below the threshold, the device generates a reset signal (RESET) to indicate a power failure or fault condition. The reset signal remains active until the input voltage rises above the threshold and the programmed delay time elapses.

Application Field Plans

The TPS3851G25EQDRBRQ1 is commonly used in various applications where voltage supervision is critical. Some potential application fields include:

1. Automotive Electronics: Used to monitor and control voltage levels in automotive electronic systems, ensuring reliable operation and protection against power failures.
2. Industrial Control Systems: Provides voltage monitoring and reset functionality in industrial control systems to prevent damage or data loss during power fluctuations.
3. Consumer Electronics: Used in consumer electronic devices to ensure proper power management and protect sensitive components from voltage variations.
4. Telecommunications: Enables voltage supervision in telecommunications equipment to maintain stable operation and prevent system failures.

Alternative Models

1. TPS3850G25EQDRBRQ1
2. TPS3850G33EQDRBRQ1
3. TPS3850H33EQDRBRQ1
4. TPS3850H50EQDRBRQ1

These alternative models offer similar voltage supervisor functionality with slight variations in specifications and features.

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