TPS3851G18SDRBT

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 - Designed for use in various applications where accurate voltage monitoring is critical - Offers low-power consumption and high accuracy

Package: 6-WSON (2x2) package

Essence: The TPS3851G18SDRBT 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 if the voltage drops below the set threshold.

Packaging/Quantity: The TPS3851G18SDRBT is available in a 6-WSON package. It is typically sold in reels, with each reel containing a specific quantity of ICs.

Specifications

• Supply Voltage Range: 1.8V to 6.5V
• Threshold Voltage Accuracy: ±0.5%
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 3.5µA (typical)
• Reset Time Delay: 200ms (typical)

Pin Configuration

The TPS3851G18SDRBT has the following pin configuration:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| VIT | |___________| ```

• VDD: Power supply input
• GND: Ground reference
• MR: Manual reset input
• RESET: Reset output
• VIT: Voltage input

Functional Features

1. Voltage Monitoring: The TPS3851G18SDRBT continuously monitors the voltage level at the VIT pin and compares it with the set threshold.
2. Reset Signal Generation: If the voltage falls below the specified threshold, the TPS3851G18SDRBT generates a reset signal at the RESET pin.
3. Manual Reset: The MR pin allows for manual resetting of the device, overriding the automatic reset function.
4. Low Power Consumption: The IC operates with low quiescent current, making it suitable for battery-powered applications.
5. High Accuracy: The TPS3851G18SDRBT offers precise voltage monitoring with a threshold voltage accuracy of ±0.5%.

Advantages and Disadvantages

Advantages: - Accurate voltage monitoring - Low power consumption - Manual reset option - Compact package size

Disadvantages: - Limited to voltage monitoring and reset functionality - Requires an external microcontroller for more complex tasks

Working Principles

The TPS3851G18SDRBT works by continuously monitoring the voltage level at the VIT pin. It compares this voltage with the set threshold and generates a reset signal if the voltage falls below the threshold. The device operates with low power consumption, making it suitable for various applications where accurate voltage monitoring is crucial.

Detailed Application Field Plans

The TPS3851G18SDRBT can be used in a wide range of applications, including:

1. Battery-Powered Devices: It ensures proper voltage levels in portable devices, preventing unexpected shutdowns due to low battery voltage.
2. Industrial Control Systems: The IC provides reliable voltage monitoring in industrial control systems, ensuring stable operation and preventing damage caused by voltage fluctuations.
3. Automotive Electronics: It can be used in automotive electronics to monitor critical voltage levels and trigger appropriate actions in case of voltage drops.
4. Telecommunications Equipment: The TPS3851G18SDRBT ensures stable voltage levels in telecommunications equipment, preventing malfunctions and downtime.

Detailed and Complete Alternative Models

1. TPS3850G18: Similar to TPS3851G18SDRBT but without the manual reset option.
2. TPS3839K33: A voltage supervisor with a different package (SOT-23) and lower supply voltage range (1.8V to 3.6V).
3. TL7705ACP: Another voltage supervisor IC with a different pin configuration and wider operating temperature range (-55°C to +125°C).

These alternative models offer similar voltage monitoring and reset functionality, but they may have differences in package type, supply voltage range, or additional features.

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