TPS3808G125DBVTG4

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Programmable Delay
• Package: SOT-23-6
• 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: 1.25V
• Reset Timeout Period: Programmable from 1ms to 10s
• Quiescent Current: 2µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS3808G125DBVTG4 has a total of six pins:

1. GND: Ground connection
2. VDD: Positive supply voltage input
3. MR: Manual reset input (active-low)
4. RESET: Reset output signal
5. VIT: Voltage input for monitoring
6. NC: No connection (unused pin)

Functional Features

• Precision Monitoring: The TPS3808G125DBVTG4 accurately monitors the voltage level and triggers a reset signal when it falls below the specified threshold.
• Programmable Delay: The reset timeout period can be programmed according to the application requirements, allowing flexibility in system response time.
• Low Power Consumption: With a quiescent current of only 2µA, the TPS3808G125DBVTG4 minimizes power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring ensures reliable system operation. - Programmable delay allows customization for specific applications. - Low power consumption extends battery life. - Small package size (SOT-23-6) enables space-saving designs.

Disadvantages: - Limited to voltage monitoring and reset functionality, may not suit all system requirements. - Manual reset input (MR) may require additional external components for proper utilization.

Working Principles

The TPS3808G125DBVTG4 operates by continuously monitoring the voltage level at the VIT pin. When the voltage falls below the threshold of 1.25V, the RESET output is asserted, indicating a power failure or an out-of-range condition. The reset signal remains active until the voltage rises above the threshold and the programmable delay period elapses.

Detailed Application Field Plans

The TPS3808G125DBVTG4 finds applications in various fields, including:

1. Microcontroller Systems: Provides reliable reset signals to microcontrollers during power-up or voltage drop events, ensuring proper initialization and preventing data corruption.
2. Industrial Control Systems: Monitors power supply voltages in industrial control systems, triggering appropriate actions in case of voltage fluctuations or failures.
3. Automotive Electronics: Ensures stable operation of automotive electronic systems by monitoring critical voltage levels and initiating necessary resets when required.
4. Battery-Powered Devices: Protects battery-powered devices from undervoltage conditions, preventing damage to sensitive components and preserving battery life.

Detailed and Complete Alternative Models

1. TPS3808G01DBVR: Similar voltage supervisor IC with a fixed 1.2V threshold and a smaller SOT-23-5 package.
2. MAX809: Voltage supervisor IC with adjustable threshold voltage and various package options.
3. ADM6315: Precision voltage monitor with a wide supply voltage range and adjustable reset timeout period.

(Note: This list is not exhaustive and serves as a starting point for exploring alternative models.)

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