CAT1832L

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics:
  • Monitors the power supply voltage of a system
  • Provides reset signal when voltage falls below a specified threshold
  • Prevents erratic behavior or data corruption during power-up and power-down sequences
• Package: SOP-8 (Small Outline Package)
• Essence: Ensures reliable operation by monitoring power supply voltage levels
• Packaging/Quantity: Available in reels, 2500 units per reel

Specifications

• Supply Voltage Range: 1.5V to 6.0V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 10s
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)

Pin Configuration

The CAT1832L IC has the following pin configuration:

____ VCC | | GND RST | | RESET GND | | MR VCC | | TH ----

Functional Features

1. Voltage Monitoring: Monitors the power supply voltage continuously.
2. Reset Signal Generation: Generates a reset signal when the voltage falls below the specified threshold.
3. Adjustable Timeout Period: Allows adjustment of the reset timeout period according to system requirements.
4. Manual Reset Input: Provides an optional manual reset input for immediate system reset.
5. Low Quiescent Current: Consumes low quiescent current, minimizing power consumption.

Advantages

• Ensures reliable system operation by preventing erratic behavior during power-up and power-down sequences.
• Protects sensitive components from voltage fluctuations, reducing the risk of data corruption.
• Adjustable timeout period allows customization for different system requirements.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered applications.

Disadvantages

• Limited threshold voltage options may not cover all voltage monitoring requirements.
• SOP-8 package may not be suitable for space-constrained designs.

Working Principles

The CAT1832L operates by continuously monitoring the power supply voltage using an internal voltage reference. When the voltage falls below the specified threshold, it generates a reset signal to initiate a system reset. The reset signal remains active until the voltage rises above the threshold and the adjustable timeout period elapses.

Application Field Plans

The CAT1832L is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are required. Some potential application fields include:

1. Microcontrollers: Ensures proper initialization and prevents data corruption during power-up and power-down sequences.
2. Embedded Systems: Provides reliable reset functionality for stable system operation.
3. Industrial Control Systems: Monitors power supply voltage to prevent damage to critical components.
4. Automotive Electronics: Ensures proper functioning of control units during voltage fluctuations.
5. Consumer Electronics: Protects sensitive components from voltage variations, enhancing overall system reliability.

Alternative Models

1. MAX823: Offers similar voltage monitoring and reset functionality with additional features.
2. LTC2910: Provides advanced voltage monitoring capabilities with programmable thresholds.
3. ADM6315: Offers voltage monitoring and reset functionality in a smaller SOT-23 package.

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