DS1231-50N

Product Overview

Category

DS1231-50N belongs to the category of integrated circuits (ICs).

Use

The DS1231-50N IC is primarily used for voltage monitoring and power supply supervision in electronic systems.

Characteristics

• Voltage monitoring: The DS1231-50N monitors the voltage level of the power supply and provides an output signal based on predefined thresholds.
• Power supply supervision: It supervises the power supply to ensure it remains within safe operating limits.
• Package: The DS1231-50N is available in a standard 8-pin DIP package.
• Essence: This IC is designed to enhance system reliability by providing accurate voltage monitoring and power supply supervision.
• Packaging/Quantity: The DS1231-50N is typically packaged in reels or tubes, with quantities varying depending on the supplier.

Specifications

The specifications of the DS1231-50N are as follows:

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Voltage Threshold Accuracy: ±2%
• Reset Timeout Period: 50ms
• Output Type: Active-Low RESET
• Quiescent Current: 20µA (typical)

Pin Configuration

The DS1231-50N has the following pin configuration:

┌───┬───┐ │ 1 │ 8 │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ 4 │ 5 │ └───┴───┘

Pin Description: 1. GND: Ground connection. 2. VCC: Power supply input. 3. MR: Manual reset input. 4. RESET: Active-low reset output. 5. TH: Threshold voltage input. 6. GND: Ground connection. 7. GND: Ground connection. 8. VCC: Power supply input.

Functional Features

The DS1231-50N offers the following functional features:

1. Voltage Monitoring: It continuously monitors the power supply voltage and compares it to the threshold voltage set by the TH pin.
2. Reset Generation: When the monitored voltage falls below the threshold, the DS1231-50N generates an active-low reset signal on the RESET pin.
3. Manual Reset: The MR pin allows for manual reset, overriding the automatic reset generation.
4. Reset Timeout: After the voltage rises above the threshold, the DS1231-50N maintains the reset signal for a fixed timeout period of 50ms.

Advantages and Disadvantages

Advantages: - Accurate voltage monitoring - Reliable power supply supervision - Manual reset capability - Low quiescent current consumption

Disadvantages: - Fixed reset timeout period may not be suitable for all applications - Limited voltage threshold accuracy

Working Principles

The DS1231-50N operates based on a voltage comparator circuit. It compares the power supply voltage with the threshold voltage set by the TH pin. If the power supply voltage drops below the threshold, the comparator triggers the generation of an active-low reset signal. This signal remains active until the power supply voltage rises above the threshold or the manual reset (MR) pin is activated.

Application Field Plans

The DS1231-50N finds applications in various electronic systems where reliable power supply monitoring and reset generation are critical. Some potential application fields include:

1. Microcontroller Systems: Ensuring stable power supply and initiating system resets in case of voltage fluctuations.
2. Industrial Control Systems: Monitoring power supply integrity in control panels and initiating system resets to prevent malfunction.
3. Automotive Electronics: Supervising battery voltage and triggering resets to protect sensitive electronic components.

Alternative Models

1. DS1231-10N: Similar to DS1231-50N, but with a reset timeout period of 10ms.
2. DS1231-20N: Similar to DS1231-50N, but with a reset timeout period of 20ms.
3. DS1231-100N: Similar to DS1231-50N, but with a reset timeout period of 100ms.

These alternative models provide different reset timeout periods to cater to specific application requirements.

In conclusion, the DS1231-50N is an integrated circuit designed for voltage monitoring and power supply supervision. It offers accurate monitoring, reset generation, and manual reset capabilities. While it has some limitations, it finds applications in various electronic systems where reliable power supply monitoring is essential.