CAT824UTDI-GT3

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage to ensure proper operation of electronic devices - Provides a reset signal when the voltage falls below a specified threshold - Helps prevent data corruption and system malfunction during power fluctuations or brownouts

Package: SOT-23-5

Essence: The CAT824UTDI-GT3 is an integrated circuit designed to monitor voltage levels and provide a reset signal to electronic devices.

Packaging/Quantity: The CAT824UTDI-GT3 is typically packaged in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.32V, 2.93V, 4.63V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The CAT824UTDI-GT3 has a total of 5 pins:

1. GND (Ground): Connected to the ground reference of the system.
2. VDD (Supply Voltage): Connected to the positive supply voltage.
3. MR (Manual Reset): An active-low input used to force a reset condition.
4. RESET (Reset Output): Active-low output that goes low when the monitored voltage falls below the threshold.
5. NC (No Connect): This pin is not connected and should be left unconnected.

Functional Features

• Accurate monitoring of power supply voltage.
• Adjustable reset threshold voltage options for flexibility.
• Built-in hysteresis to prevent oscillation near the threshold voltage.
• Manual reset option for system debugging or testing purposes.
• Low quiescent current consumption for power efficiency.
• Small package size for space-constrained applications.

Advantages

• Ensures reliable operation of electronic devices by monitoring voltage levels.
• Helps prevent data corruption and system malfunction during power fluctuations.
• Adjustable reset threshold voltage allows customization for different applications.
• Manual reset option provides flexibility for debugging or testing purposes.
• Small package size enables use in space-constrained designs.

Disadvantages

• Limited to monitoring voltage levels and providing a reset signal, does not offer additional functionality.
• Requires an external capacitor for proper operation.
• Not suitable for applications requiring precise voltage regulation.

Working Principles

The CAT824UTDI-GT3 operates by continuously monitoring the power supply voltage. When the voltage falls below the specified threshold, the reset output goes low, indicating a reset condition. The reset output remains low until the voltage rises above the threshold and the reset timeout period elapses. The device incorporates hysteresis to prevent oscillation near the threshold voltage, ensuring stable operation.

Application Field Plans

The CAT824UTDI-GT3 is commonly used in various electronic systems where reliable voltage monitoring is critical. Some application fields include:

1. Microcontrollers and microprocessors: Ensures proper operation and prevents data corruption during power fluctuations.
2. Industrial control systems: Provides reliable reset signals to maintain system integrity.
3. Automotive electronics: Monitors voltage levels to prevent malfunctions and ensure safe operation.
4. Power management systems: Assists in managing power supply stability and protection.

Alternative Models

1. MAX823: Voltage supervisor IC with similar features and specifications.
2. LTC2917: Precision voltage monitor with adjustable threshold options.
3. TPS3808: Ultra-low-power voltage supervisor with manual reset capability.

These alternative models offer similar functionality and can be considered as substitutes for the CAT824UTDI-GT3 in specific applications.

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