TPS3852H18QDRBRQ1

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Monitors undervoltage and overvoltage conditions - Provides a reset signal to the system when voltage is outside the specified range - Low quiescent current consumption - Wide operating voltage range - Adjustable threshold voltage levels

Package: 8-SOIC (Small Outline Integrated Circuit)

Essence: The TPS3852H18QDRBRQ1 is an integrated circuit that serves as a voltage supervisor. It ensures that the voltage supplied to a system remains within the desired range, providing stability and preventing damage to sensitive components.

Packaging/Quantity: The TPS3852H18QDRBRQ1 is available in a 2500-piece reel packaging.

Specifications

• Supply Voltage Range: 1.6V to 6V
• Threshold Voltage Accuracy: ±1%
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 3µA (typical)
• Reset Timeout Period: 200ms (typical)
• Output Type: Active-Low, Open Drain

Pin Configuration

The TPS3852H18QDRBRQ1 has the following pin configuration:

```

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| | --| VDD GND |-- Power Supply Pins --| RESET NC |-- Reset Output and No Connect Pin --| VIN GND |-- Voltage Input and Ground Pins |___________| ```

Functional Features

1. Undervoltage and Overvoltage Monitoring: The TPS3852H18QDRBRQ1 continuously monitors the input voltage and detects undervoltage and overvoltage conditions.
2. Reset Signal Generation: When the input voltage falls below or exceeds the specified threshold levels, the TPS3852H18QDRBRQ1 generates a reset signal to initiate system reset.
3. Adjustable Threshold Voltage Levels: The threshold voltage levels can be adjusted using external resistors, allowing customization for different applications.
4. Low Quiescent Current Consumption: The IC consumes very low quiescent current, minimizing power consumption and extending battery life.
5. Wide Operating Voltage Range: The TPS3852H18QDRBRQ1 operates over a wide voltage range, making it suitable for various voltage supply systems.

Advantages

• Provides reliable voltage monitoring and reset functionality
• Adjustable threshold voltage levels offer flexibility for different applications
• Low quiescent current consumption helps conserve power
• Wide operating voltage range ensures compatibility with diverse systems

Disadvantages

• Limited to voltage supervision and reset functions, not suitable for other complex tasks
• Requires additional external components (resistors) for threshold voltage adjustment

Working Principles

The TPS3852H18QDRBRQ1 works by comparing the input voltage (VIN) with the internally set threshold voltage levels. If the input voltage falls below the undervoltage threshold or exceeds the overvoltage threshold, the IC generates a reset signal (active-low) on the RESET pin. This reset signal can be used to initiate a system reset or trigger other necessary actions.

Detailed Application Field Plans

The TPS3852H18QDRBRQ1 is commonly used in various electronic systems where voltage monitoring and reset functionality are critical. Some application fields include:

1. Automotive Electronics: Used in automotive control units to monitor and ensure stable voltage supply, preventing damage to sensitive electronic components.
2. Industrial Automation: Employed in industrial automation systems to monitor power supply voltages and initiate system resets in case of voltage deviations.
3. Telecommunications: Integrated into telecommunications equipment to monitor voltage levels and provide reliable reset signals for system stability.
4. Consumer Electronics: Utilized in consumer electronic devices, such as smartphones and tablets, to monitor battery voltage and initiate proper shutdown or reset procedures.

Detailed and Complete Alternative Models

1. TPS3850H33QDRBRQ1: Similar to TPS3852H18QDRBRQ1 but with a different threshold voltage range (3.3V).
2. TPS3839K33DBVRQ1: Voltage supervisor IC with fixed threshold voltage (3.3V) and SOT-23 package.
3. TPS3808G01DBVRQ1: Offers undervoltage and overvoltage monitoring with adjustable threshold voltages and SOT-23 package.

These alternative models provide similar voltage supervision and reset functionality, catering to different voltage requirements and package preferences.

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