TPS3808G33MDBVREP

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
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V
• Reset Timeout Period: Programmable from 1.25ms to 10s
• Quiescent Current: 1.6µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TPS3808G33MDBVREP has the following pin configuration:

1. GND (Ground): Connected to the ground reference of the system.
2. VDD (Supply Voltage): Connected to the positive supply voltage of the system.
3. MR (Manual Reset): Active-low input for manual reset.
4. RESET (Reset Output): Active-low output that asserts when the monitored voltage falls below the threshold.

Functional Features

• Precision Monitoring: The TPS3808G33MDBVREP accurately monitors the supply voltage and provides a reset signal when it falls below the programmed threshold.
• Programmable Delay: The reset timeout period can be easily programmed using external resistors and capacitors, allowing flexibility in system design.
• Low Power Consumption: With a quiescent current of only 1.6µA, the TPS3808G33MDBVREP minimizes power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages: - High accuracy in voltage monitoring. - Programmable reset timeout period. - Low power consumption. - Small package size.

Disadvantages: - Limited threshold voltage options. - Manual reset functionality may not be required in all applications.

Working Principles

The TPS3808G33MDBVREP operates by comparing the supply voltage with a programmable threshold voltage. When the supply voltage falls below the threshold, the reset output is asserted, indicating a power failure or an out-of-range condition. The reset remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The TPS3808G33MDBVREP is commonly used in various applications where reliable voltage monitoring is crucial. Some of the typical application fields include:

1. Microcontroller Systems: Ensures proper system initialization and prevents erratic behavior during power-up or brownout conditions.
2. Industrial Control Systems: Monitors power supply integrity to prevent damage to sensitive equipment and ensure safe operation.
3. Automotive Electronics: Provides reset signals to microcontrollers and other critical components, ensuring reliable operation in automotive systems.
4. Battery-Powered Devices: Protects battery life by initiating a shutdown sequence when the battery voltage drops below a certain level.

Detailed and Complete Alternative Models

1. TPS3809K33MDBVREP: Similar to TPS3808G33MDBVREP but with different threshold voltage options (3.08V, 3.23V, 3.63V, 4.38V).
2. TPS3808G01MDBVREP: Offers fixed threshold voltage options (2.93V, 3.08V, 3.63V, 4.38V) without programmable delay.
3. TPS3837K33MDBVREP: Provides a higher threshold voltage range (3.13V, 3.38V, 3.63V, 4.38V) for specific applications.

(Note: These alternative models are just a few examples and not an exhaustive list.)

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