TPS3809I50DBVTG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Precision Monitoring - Small Package Size

Package: SOT-23 (5-Pin)

Essence: The TPS3809I50DBVTG4 is a voltage supervisor IC that monitors the power supply voltage of electronic systems and provides a reset signal when the voltage falls below a certain threshold.

Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Accuracy: ±1.5%
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Reset Timeout Period: 200ms (typical)

Pin Configuration

The TPS3809I50DBVTG4 has a 5-pin SOT-23 package with the following pin configuration:

1. GND (Ground)
2. VDD (Supply Voltage)
3. MR (Manual Reset)
4. RESET (Reset Output)
5. N/C (No Connection)

Functional Features

• Precision monitoring of supply voltage
• Adjustable threshold voltage through external resistors
• Manual reset input for system initialization
• Active-low reset output signal
• Built-in glitch immunity
• Power-on reset delay time of 20ms (typical)

Advantages and Disadvantages

Advantages: - Low power consumption - Wide supply voltage range - Adjustable threshold voltage - Small package size - Precision monitoring

Disadvantages: - Limited number of pins for additional functionality - Not suitable for high voltage applications

Working Principles

The TPS3809I50DBVTG4 operates by continuously monitoring the supply voltage. When the voltage falls below the threshold set by external resistors, the reset output is activated, indicating a power failure or low voltage condition. The manual reset input allows for system initialization, and the active-low reset signal can be used to reset microcontrollers or other digital devices.

Detailed Application Field Plans

The TPS3809I50DBVTG4 is commonly used in various electronic systems where reliable power supply monitoring is crucial. Some application fields include:

1. Battery-Powered Devices: Ensures proper functioning and prevents data loss during low battery conditions.
2. Industrial Control Systems: Monitors power supply integrity to prevent equipment damage or malfunctions.
3. Automotive Electronics: Provides reset signals to microcontrollers and sensors in automotive applications.
4. Home Automation: Ensures stable power supply for smart home devices and prevents system crashes.
5. Medical Equipment: Monitors power supply voltage to ensure patient safety and device reliability.

Detailed and Complete Alternative Models

• TPS3809K33DBVR
• TPS3809J25DBVR
• TPS3809L30DBVR
• TPS3809I33DBVR
• TPS3809I25DBVR

These alternative models offer similar functionality and characteristics to the TPS3809I50DBVTG4 but with different threshold voltages.

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