TPS3808G25DRVRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Precision Monitoring - Manual Reset Input - Open Drain Output - Small Package Size

Package: SOT-23-5

Essence: The TPS3808G25DRVRG4 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 TPS3808G25DRVRG4 is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.5V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3 µA (typical)
• Reset Timeout Period: 200 ms (typical)
• Manual Reset Input Threshold Voltage: 0.4V (typical)
• Output Type: Open Drain

Pin Configuration

The TPS3808G25DRVRG4 has a SOT-23-5 package with the following pin configuration:

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Pin 1: GND (Ground)

Pin 2: MR (Manual Reset Input)

Pin 3: VDD (Supply Voltage)

Pin 4: RESET (Reset Output)

Pin 5: GND (Ground)

Functional Features

• Monitors the power supply voltage and generates a reset signal when it falls below the threshold voltage.
• Provides a manual reset input for immediate system reset.
• Open drain output allows for flexibility in connecting to different microcontrollers or devices.
• Adjustable threshold voltage allows customization for specific applications.
• Low power consumption ensures minimal impact on overall system power.

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables use in various systems. - Precision monitoring ensures accurate detection of voltage drops. - Small package size saves board space. - Adjustable threshold voltage provides flexibility for different applications. - Manual reset input allows for immediate system reset.

Disadvantages: - Limited number of threshold voltage options. - Open drain output may require additional circuitry for certain applications.

Working Principles

The TPS3808G25DRVRG4 operates by continuously monitoring the supply voltage. When the voltage falls below the threshold voltage (2.5V), the reset output is activated, signaling a low voltage condition. The reset output remains active until the voltage rises above the threshold voltage and a timeout period (200 ms) elapses. The manual reset input can also be used to force an immediate system reset.

Detailed Application Field Plans

The TPS3808G25DRVRG4 is commonly used in various electronic systems where reliable power supply monitoring is critical. Some application fields include:

1. Battery-Powered Devices: Ensures proper operation and prevents damage due to low battery voltage.
2. Industrial Control Systems: Monitors power supply integrity to prevent system malfunctions or data corruption.
3. Automotive Electronics: Protects sensitive components from voltage fluctuations and ensures safe operation.
4. Medical Equipment: Provides reliable power monitoring to ensure patient safety and device functionality.
5. Home Automation Systems: Detects power supply issues and triggers appropriate actions for system stability.

Detailed and Complete Alternative Models

1. TPS3808G01: Similar voltage supervisor IC with a fixed 2.93V threshold voltage.
2. TPS3808G33: Voltage supervisor IC with a fixed 3.08V threshold voltage.
3. TPS3808G50: Voltage supervisor IC with a fixed 4.63V threshold voltage.

These alternative models offer different threshold voltage options to suit specific application requirements.

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