TPS3808G19DBVR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Programmable Delay
• Package: SOT-23 (Small Outline Transistor)
• Essence: Monitors voltage levels and provides reset signals to microcontrollers or other digital systems.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Reset Threshold Voltage Options: 1.9V, 2.5V, 3.1V, 4.4V
• Adjustable Reset Time Delay: 1ms to 10s
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS3808G19DBVR has the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. VDD (Supply Voltage)

Functional Features

• Precision Monitoring: The TPS3808G19DBVR accurately monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
• Programmable Delay: The reset time delay can be adjusted using an external capacitor, allowing flexibility in system initialization.
• Low Power Consumption: With a quiescent current of only 1.5µA, the TPS3808G19DBVR minimizes power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages: - High precision monitoring ensures reliable system operation. - Programmable delay allows customization for specific application requirements. - Low power consumption extends battery life in portable devices.

Disadvantages: - Limited reset threshold voltage options may not cover all voltage monitoring needs. - SOT-23 package may not be suitable for applications requiring higher power dissipation.

Working Principles

The TPS3808G19DBVR operates by comparing the supply voltage with a programmable threshold. When the supply voltage drops below the threshold, the reset output is asserted, indicating a power failure or fault condition. The reset signal remains active until the supply voltage rises above the threshold and the delay time elapses.

Detailed Application Field Plans

The TPS3808G19DBVR finds applications in various fields, including: 1. Battery-Powered Devices: Provides reliable power monitoring and system reset functionality in portable electronics. 2. Industrial Control Systems: Ensures proper operation by monitoring power supply integrity and initiating system resets when necessary. 3. Automotive Electronics: Protects sensitive components from voltage fluctuations and enables safe system restart after power disruptions.

Detailed and Complete Alternative Models

1. TPS3809I50DBVR: Similar to TPS3808G19DBVR but with a different reset threshold voltage option (5.0V).
2. TPS3836K33DBVR: Voltage supervisor with fixed 3.3V reset threshold and adjustable delay time.
3. TPS3890QDBVRQ1: Automotive-grade voltage supervisor with wide supply voltage range and adjustable reset threshold.

(Note: This entry provides only a few alternative models. For a comprehensive list, refer to the manufacturer's datasheet or consult an authorized distributor.)

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