TPS3808G125QDBVRQ1

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Open Drain Output - Small Package Size

Package: SOT-23 (5-Pin)

Essence: The TPS3808G125QDBVRQ1 is a voltage supervisor IC designed to monitor the power supply voltage of electronic systems and provide a reset signal when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3808G125QDBVRQ1 is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 1.25V
• Quiescent Current: 3 µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Open Drain
• Reset Timeout Period: Adjustable (1.6 ms to 1024 ms)

Pin Configuration

The TPS3808G125QDBVRQ1 has the following pin configuration:

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Pin 1: GND (Ground)

Pin 2: VDD (Supply Voltage)

Pin 3: MR (Manual Reset Input)

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 an adjustable reset timeout period to allow for customization based on system requirements.
• Offers a manual reset input for external control of the reset function.
• Open drain output allows for easy interfacing with other devices.

Advantages and Disadvantages

Advantages: - Low power consumption helps to conserve energy in battery-powered applications. - Wide supply voltage range makes it compatible with a variety of systems. - Adjustable threshold voltage allows for flexibility in monitoring different voltage levels. - Small package size enables space-saving designs.

Disadvantages: - Limited reset timeout period range may not be suitable for all applications requiring longer timeouts. - Open drain output requires an external pull-up resistor for proper operation.

Working Principles

The TPS3808G125QDBVRQ1 operates by continuously monitoring the supply voltage connected to its VDD pin. When the voltage falls below the threshold voltage (1.25V), the IC asserts a reset signal on the RESET pin. The reset signal remains active until the supply voltage rises above the threshold voltage and the reset timeout period elapses.

Detailed Application Field Plans

The TPS3808G125QDBVRQ1 is commonly used in various electronic systems where reliable power supply monitoring is critical. Some application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or voltage drops.
2. Industrial Control Systems: Provides fault detection and system reset capabilities to maintain stable operation.
3. Automotive Electronics: Monitors the vehicle's power supply to prevent malfunctions and ensure safe operation.
4. Battery-Powered Devices: Protects sensitive circuitry from undervoltage conditions, extending battery life.

Detailed and Complete Alternative Models

1. TPS3808G01: Similar voltage supervisor IC with fixed 1.6V threshold voltage.
2. TPS3808G33: Voltage supervisor IC with a higher threshold voltage of 3.3V.
3. TPS3808G50: Voltage supervisor IC with a higher threshold voltage of 5.0V.
4. TPS3808G33DBVRQ1: Similar to TPS3808G33 but available in a different package (SOT-23-6).

These alternative models offer different threshold voltage options and may be suitable for specific voltage monitoring requirements.

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