TPS3836E18DBVRG4

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision, Reset Generation
• Package: SOT-23 (Small Outline Transistor)
• Essence: Monitoring and controlling voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.5V to 6.5V
• Threshold Voltage: 1.8V
• Accuracy: ±1%
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Output Type: Active-Low, Open Drain
• Reset Timeout Period: Adjustable or Fixed (140ms typical)

Detailed Pin Configuration

The TPS3836E18DBVRG4 IC has the following pin configuration:

1. GND (Ground): Connected to the ground reference of the system.
2. VDD (Supply Voltage): Connects to the positive supply voltage.
3. MR (Manual Reset): An active-low input used to force a reset.
4. RESET (Reset Output): Active-low open-drain output indicating the system reset status.

Functional Features

• Voltage Supervision: Monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Precision: Provides accurate voltage monitoring with a low tolerance of ±1%.
• Low Power Consumption: Operates at a quiescent current of only 1.5µA, minimizing power consumption.
• Reset Timeout: Offers an adjustable or fixed reset timeout period, ensuring proper system reset.

Advantages and Disadvantages

Advantages

• Precise voltage monitoring ensures reliable system operation.
• Low power consumption prolongs battery life in portable devices.
• Adjustable reset timeout allows customization for specific applications.
• Small package size (SOT-23) enables space-saving designs.

Disadvantages

• Limited to a supply voltage range of 1.5V to 6.5V.
• Fixed threshold voltage may not suit all voltage level requirements.

Working Principles

The TPS3836E18DBVRG4 operates by continuously monitoring the supply voltage. When the voltage falls below the threshold voltage (1.8V), the IC generates an active-low reset signal on the RESET pin. This signal indicates that the system should be reset or powered down to prevent erratic behavior or data corruption.

The reset timeout period, either adjustable or fixed, determines how long the reset signal remains active after the voltage rises above the threshold. This feature prevents premature system restarts during voltage fluctuations or temporary power disruptions.

Detailed Application Field Plans

The TPS3836E18DBVRG4 is commonly used in various electronic systems where reliable voltage monitoring and reset generation are critical. Some application fields include:

1. Microcontrollers: Ensures proper initialization and safe operation of microcontroller-based systems.
2. Embedded Systems: Protects sensitive components from voltage drops and ensures controlled system shutdown during power failures.
3. Battery-Powered Devices: Maximizes battery life by preventing excessive discharge and providing accurate low-battery warnings.
4. Industrial Control Systems: Monitors power supply integrity in industrial automation equipment, preventing damage or data loss.
5. Telecommunications Equipment: Guarantees stable operation of communication devices by detecting and managing voltage fluctuations.

Detailed and Complete Alternative Models

1. TPS3837E18DBVRG4: Similar to TPS3836E18DBVRG4 but with a higher threshold voltage of 1.8V.
2. TPS3836E25DBVRG4: Similar to TPS3836E18DBVRG4 but with a higher threshold voltage of 2.5V.
3. TPS3836E33DBVRG4: Similar to TPS3836E18DBVRG4 but with a higher threshold voltage of 3.3V.
4. TPS3836E50DBVRG4: Similar to TPS3836E18DBVRG4 but with a higher threshold voltage of 5.0V.

These alternative models provide flexibility in selecting the appropriate threshold voltage for specific system requirements.

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