TPS3801E18DCKRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Precision Monitoring - Reset Time Delay Option

Package: SC-70, 5-Pin

Essence: The TPS3801E18DCKRG4 is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other devices when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3801E18DCKRG4 is available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Accuracy: ±1.8%
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 2.5µA (typical)
• Reset Timeout Period: 200ms (typical)

Pin Configuration

The TPS3801E18DCKRG4 has the following pin configuration:

1. GND (Ground)
2. VDD (Supply Voltage)
3. MR (Manual Reset Input)
4. RESET (Reset Output)
5. TH (Threshold Voltage Adjust)

Functional Features

• Undervoltage Detection: Monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Manual Reset Input: Allows for manual reset of the system by asserting a low level on the MR pin.
• Adjustable Threshold Voltage: The TH pin can be used to adjust the threshold voltage according to the specific requirements of the application.
• Precision Monitoring: The TPS3801E18DCKRG4 provides accurate monitoring of the supply voltage with a threshold voltage accuracy of ±1.8%.
• Reset Time Delay Option: The reset timeout period can be adjusted using an external capacitor connected to the TH pin.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide supply voltage range - Adjustable threshold voltage - Precision monitoring - Reset time delay option

Disadvantages: - Limited number of pins for additional functionality

Working Principles

The TPS3801E18DCKRG4 operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. When the supply voltage falls below the threshold voltage set by the TH pin, the reset output is asserted low, indicating a power failure or undervoltage condition. The reset output remains low until the supply voltage rises above the threshold voltage and a timeout period elapses, ensuring stability before releasing the reset signal.

Detailed Application Field Plans

The TPS3801E18DCKRG4 is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some of the typical application fields include:

1. Microcontroller Systems: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
2. Industrial Control Systems: Provides fault detection and system reset capability in industrial automation and control systems.
3. Automotive Electronics: Monitors the vehicle's power supply voltage and triggers a system reset in case of undervoltage conditions.
4. Battery-Powered Devices: Protects battery-powered devices from damage due to excessive discharge by initiating a reset when the battery voltage drops below a safe threshold.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TPS3801E18DCKRG4 include:

1. TPS3808G01DBVR - 2.93V Voltage Supervisor with Programmable Delay
2. MAX809SEUR+T - 2.93V Voltage Monitor with Manual Reset
3. ADM708TARZ-REEL7 - 2.63V Precision Voltage Monitor with Watchdog Timer

These alternative models can be considered based on specific application requirements and availability.

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