TPS3850G30DRCT

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 - Offers precision voltage monitoring with adjustable thresholds - Suitable for applications requiring high accuracy and reliability - Provides a reset output during power-up, power-down, and brownout conditions

Package: VSON-8 (Very Small Outline No-Lead) package

Essence: The TPS3850G30DRCT is an integrated circuit that serves as a voltage supervisor. It ensures stable operation of electronic systems by monitoring voltage levels and generating a reset signal when the voltage drops below a predetermined threshold.

Packaging/Quantity: The TPS3850G30DRCT is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Adjustable Threshold Voltage Range: 0.4V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 3.5µA (typical)
• Reset Timeout Period: 200ms (typical)
• Output Type: Active Low

Pin Configuration

The TPS3850G30DRCT has the following pin configuration:

```

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

Functional Features

1. Voltage Monitoring: The TPS3850G30DRCT continuously monitors the input voltage and compares it to the adjustable threshold voltage.
2. Reset Generation: When the input voltage falls below the threshold, the TPS3850G30DRCT generates a reset signal to ensure proper system operation.
3. Precision Threshold Adjustment: The device allows for precise adjustment of the threshold voltage, enabling customization for specific application requirements.
4. Power-Up and Power-Down Reset: The TPS3850G30DRCT provides a reset output during power-up and power-down sequences, ensuring controlled system initialization and shutdown.
5. Brownout Detection: In case of a brownout condition (voltage drop without complete power loss), the TPS3850G30DRCT triggers a reset to prevent erratic behavior.

Advantages and Disadvantages

Advantages: - High accuracy voltage monitoring - Adjustable threshold voltage for customization - Low quiescent current consumption - Reliable reset generation during power transitions - Brownout detection capability

Disadvantages: - Limited supply voltage range (1.6V to 6.5V) - Fixed reset timeout period (200ms)

Working Principles

The TPS3850G30DRCT operates by continuously monitoring the input voltage using an internal voltage reference and comparator. The threshold voltage can be adjusted using external resistors connected to the VTH pin. When the input voltage drops below the set threshold, the comparator triggers the reset circuitry, generating a low-level reset signal. This signal remains active until the input voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The TPS3850G30DRCT is widely used in various applications where voltage supervision is critical for reliable system operation. Some common application fields include:

1. Microcontrollers and Microprocessors: The TPS3850G30DRCT ensures stable operation of microcontrollers and microprocessors by providing a reset signal during power-up and power-down sequences, preventing erratic behavior and ensuring controlled initialization.

2. Communication Systems: In communication systems, the TPS3850G30DRCT plays a vital role in maintaining uninterrupted operation. It detects brownout conditions and generates a reset signal to prevent system malfunction during voltage drops.

3. Industrial Control Systems: Industrial control systems often require precise voltage monitoring to ensure safe and reliable operation. The TPS3850G30DRCT provides accurate voltage supervision, enabling timely system resets when necessary.

4. Automotive Electronics: Automotive electronics demand high reliability and accuracy. The TPS3850G30DRCT is suitable for applications such as engine control units, powertrain systems, and safety modules, where voltage monitoring and reset generation are crucial.

Detailed and Complete Alternative Models

1. TPS3850G33DRCT: Similar to the TPS3850G30DRCT, this model offers an adjustable threshold voltage range of 0.4V to 5.5V. However, it has a different reset timeout period of 50ms (typical).

2. TPS3836K33DBVR: This alternative model