DS1832U

Product Overview

• Category: Integrated Circuits
• Use: Voltage Supervisor
• Characteristics:
  • Monitors power supply voltage levels
  • Generates reset signals when voltage falls below a specified threshold
  • Programmable delay time for reset signal
• Package: SOIC-8
• Essence: Ensures reliable operation of electronic systems by monitoring and controlling power supply voltages.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Reset Threshold Options: 4.63V, 4.38V, 4.00V, 3.08V
• Reset Timeout Periods: 140ms, 280ms, 560ms, 1120ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The DS1832U has the following pin configuration:

1. VCC: Power Supply Input
2. GND: Ground
3. RESET: Reset Output
4. MR: Master Reset Input
5. GND: Ground
6. GND: Ground
7. GND: Ground
8. VCC: Power Supply Input

Functional Features

• Monitors power supply voltage and generates a reset signal when it falls below the specified threshold.
• Programmable reset timeout period allows customization based on system requirements.
• Provides a master reset input for manual reset control.

Advantages and Disadvantages

Advantages: - Ensures reliable operation of electronic systems by preventing malfunctions caused by low voltage conditions. - Programmable features offer flexibility to adapt to different system requirements. - Compact package size allows for easy integration into various applications.

Disadvantages: - Limited reset threshold options may not cover all voltage monitoring scenarios. - Lack of additional features such as hysteresis adjustment.

Working Principles

The DS1832U operates by continuously monitoring the power supply voltage. When the voltage falls below the programmed threshold, it generates a reset signal to initiate a system reset. The reset timeout period determines how long the reset signal remains active after the voltage returns to normal. The master reset input allows for manual control of the reset function.

Detailed Application Field Plans

The DS1832U is widely used in various electronic systems where reliable voltage monitoring and reset functionality are critical. Some common application fields include:

1. Microcontrollers: Ensures proper initialization and prevents data corruption during power-up or voltage fluctuations.
2. Industrial Control Systems: Protects sensitive equipment from damage caused by low voltage conditions.
3. Automotive Electronics: Monitors battery voltage to prevent system failures and ensure safe operation.
4. Medical Devices: Provides reliable reset functionality to ensure patient safety and proper device operation.
5. Communication Systems: Prevents system lock-ups and data loss due to voltage drops.

Detailed and Complete Alternative Models

1. MAX823: Voltage supervisor with adjustable reset threshold and timeout period.
2. LTC2917: Precision voltage monitor with programmable delay and adjustable hysteresis.
3. TPS3839: Ultra-low-power voltage supervisor with fixed reset threshold and small package size.
4. ADM6316: Microprocessor supervisory circuit with watchdog timer and manual reset input.

These alternative models offer similar functionality to the DS1832U and can be considered based on specific application requirements.

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