NCP303LSN24T1 - English Editing Encyclopedia Entry

Product Overview

Category

NCP303LSN24T1 belongs to the category of voltage supervisors.

Use

This product is primarily used for monitoring and supervising voltage levels in electronic circuits.

Characteristics

• Voltage Range: 0.4V to 5.5V
• Supply Current: 6µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active Low
• Reset Threshold Accuracy: ±1.5%
• Package Type: SOT-23-5
• RoHS Compliant: Yes

Packaging/Quantity

The NCP303LSN24T1 is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 0.4V to 5.5V
• Reset Threshold Voltage: Adjustable from 0.8V to 4.6V
• Reset Timeout Period: Fixed at 140ms
• Quiescent Current: 6µA (typical)
• Power-On Reset Delay: 20ms (typical)
• Watchdog Timer: No
• Manual Reset Input: No
• Power-Good Output: No

Detailed Pin Configuration

The NCP303LSN24T1 has five pins arranged as follows:

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Pin 1: GND (Ground) Pin 2: VDD (Supply Voltage) Pin 3: MR (Manual Reset) Pin 4: RESET (Reset Output) Pin 5: NC (No Connection)

Functional Features

• Monitors supply voltage and generates a reset signal when it falls below the set threshold.
• Active low reset output provides a reliable indication of power loss or voltage drop.
• Adjustable reset threshold allows customization for different applications.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages

• Wide operating voltage range makes it suitable for various electronic systems.
• Small package size enables space-saving integration into compact designs.
• Low supply current minimizes power consumption.
• Accurate reset threshold ensures reliable voltage monitoring.

Disadvantages

• Lack of additional features like a watchdog timer or manual reset input limits its functionality in certain applications.
• Fixed reset timeout period may not be suitable for all scenarios.

Working Principles

The NCP303LSN24T1 operates by continuously monitoring the supply voltage. When the voltage falls below the set threshold, the device generates a reset signal on the RESET pin. This active low signal can be used to trigger appropriate actions, such as system shutdown or initialization.

Detailed Application Field Plans

The NCP303LSN24T1 is commonly used in various electronic systems where voltage monitoring is critical. Some application fields include:

1. Power Supply Units (PSUs): Ensures stable operation by detecting voltage drops and initiating corrective measures.
2. Battery-Powered Devices: Protects against undervoltage conditions, preventing damage to sensitive components.
3. Industrial Control Systems: Monitors power supply integrity to prevent malfunctions and ensure safe operation.
4. Automotive Electronics: Provides reliable voltage supervision for automotive systems, enhancing overall performance and safety.
5. IoT Devices: Enables efficient power management and safeguards against voltage fluctuations in connected devices.

Detailed and Complete Alternative Models

1. NCP302LSN30T1: Similar to NCP303LSN24T1 but with a higher reset threshold voltage of 3.0V.
2. NCP301LSN18T1: Offers a lower reset threshold voltage of 1.8V, suitable for applications with lower supply voltages.
3. NCP304LSN33T1: Provides a higher reset threshold voltage of 3.3V, catering to systems with higher voltage requirements.

These alternative models offer similar functionality but with different reset threshold voltages to accommodate specific application needs.

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