NCP380LMU15AATBG

Product Overview

Category

The NCP380LMU15AATBG belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and controlling the voltage levels in electronic circuits.

Characteristics

• Low quiescent current consumption
• Wide operating voltage range
• Adjustable threshold voltage
• Built-in hysteresis for noise immunity

Package

The NCP380LMU15AATBG is available in a small SOT-23-5 package.

Essence

This voltage supervisor plays a crucial role in ensuring stable and reliable operation of electronic systems by monitoring the supply voltage and generating appropriate reset signals when necessary.

Packaging/Quantity

The NCP380LMU15AATBG is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Threshold Voltage: Adjustable from 1.5V to 4.6V
• Quiescent Current: 2.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NCP380LMU15AATBG has five pins arranged as follows:

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Pin 1: GND (Ground) Pin 2: VDD (Supply Voltage) Pin 3: MR (Manual Reset Input) Pin 4: RESET (Reset Output) Pin 5: VIT (Voltage Input)

Functional Features

1. Undervoltage Detection: Monitors the input voltage and generates a reset signal when it falls below the threshold voltage.
2. Adjustable Threshold: The threshold voltage can be set according to the specific requirements of the application.
3. Hysteresis: Built-in hysteresis ensures noise immunity by preventing false triggering of the reset signal.
4. Manual Reset Input: Allows for manual resetting of the system when required.

Advantages and Disadvantages

Advantages

• Low power consumption
• Wide operating voltage range
• Adjustable threshold voltage for flexibility
• Small package size for space-constrained applications

Disadvantages

• Limited number of pins for additional functionalities
• Manual reset input may not be suitable for all applications

Working Principles

The NCP380LMU15AATBG operates by continuously monitoring the input voltage using a voltage comparator. When the voltage falls below the set threshold, the reset output is activated, indicating a low-voltage condition. This signal can be used to trigger a system reset or initiate appropriate actions to ensure the safe operation of the circuit.

Detailed Application Field Plans

The NCP380LMU15AATBG finds applications in various electronic systems where reliable voltage monitoring is critical. Some potential application fields include:

1. Power Management Systems: Ensuring stable power supply and protecting sensitive components from undervoltage conditions.
2. Battery-Powered Devices: Monitoring battery voltage to prevent deep discharge and extend battery life.
3. Industrial Control Systems: Providing voltage supervision in control panels and equipment to avoid malfunctions due to voltage fluctuations.
4. Automotive Electronics: Protecting automotive electronics from voltage drops during engine cranking or other transient events.

Detailed and Complete Alternative Models

1. MAX809: A similar voltage supervisor with adjustable threshold voltage and low power consumption.
2. TPS3839: Offers additional features like watchdog timer and power-on reset in addition to voltage monitoring.
3. ADM6315: Provides both undervoltage and overvoltage detection capabilities for enhanced protection.

These alternative models offer similar functionality and can be considered as substitutes based on specific requirements.

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