NCP380LSNAJAAT1G

Overview

Product Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a power supply - Provides reset signal to the microcontroller or other digital devices when the voltage falls below a certain threshold - Prevents erratic behavior or data corruption due to low voltage conditions

Package: SOT-23-5

Essence: The NCP380LSNAJAAT1G is a voltage supervisor IC designed to ensure reliable operation of electronic systems by monitoring the power supply voltage and generating a reset signal when necessary.

Packaging/Quantity: The NCP380LSNAJAAT1G is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V
• Reset Timeout Period: Adjustable from 1ms to 10s
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The NCP380LSNAJAAT1G has a total of 5 pins arranged as follows:

```

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| | --| VDD |-- Pin 1: Power Supply Voltage (VDD) --| GND |-- Pin 2: Ground (GND) --| MR |-- Pin 3: Manual Reset Input (MR) --| RESET |-- Pin 4: Reset Output (RESET) --| VOUT |-- Pin 5: Voltage Monitor Output (VOUT) |_______| ```

Functional Features

1. Voltage Monitoring: The NCP380LSNAJAAT1G continuously monitors the power supply voltage and compares it with the preset threshold voltage.
2. Reset Generation: When the voltage falls below the threshold, the IC generates a reset signal on the RESET pin, indicating that the power supply is out of spec.
3. Manual Reset Input: The MR pin allows for manual reset control, overriding the automatic reset generation.
4. Adjustable Timeout Period: The reset timeout period can be adjusted to meet specific system requirements.
5. Power-On Reset Delay: The IC provides a fixed delay after power-up before generating the first reset signal, ensuring stable operation during power-up.

Advantages and Disadvantages

Advantages: - Ensures reliable system operation by monitoring power supply voltage - Prevents data corruption or erratic behavior due to low voltage conditions - Adjustable timeout period allows customization for different applications - Manual reset input provides flexibility in system control

Disadvantages: - Limited to voltage monitoring and reset generation functionality - Requires an external microcontroller or digital device to respond to the reset signal

Working Principles

The NCP380LSNAJAAT1G operates by continuously monitoring the power supply voltage using an internal voltage reference. When the voltage falls below the preset threshold, the IC generates a reset signal on the RESET pin. This signal can be used to reset the microcontroller or other digital devices, ensuring proper operation under low voltage conditions. The reset timeout period can be adjusted to allow for temporary voltage fluctuations without triggering a reset. Additionally, the MR pin allows for manual reset control, providing flexibility in system control.

Application Field Plans

The NCP380LSNAJAAT1G is commonly used in various electronic systems where reliable voltage monitoring and reset generation are critical. Some potential application fields include:

1. Embedded Systems: Used in microcontroller-based systems to ensure stable operation and prevent data corruption during power supply voltage fluctuations.
2. Industrial Automation: Employed in industrial control systems to monitor power supply integrity and initiate system resets when necessary.
3. Telecommunications: Integrated into communication equipment to maintain reliable operation by monitoring power supply voltage levels.
4. Automotive Electronics: Utilized in automotive applications to monitor battery voltage and trigger system resets in case of low voltage conditions.
5. Consumer Electronics: Incorporated into electronic devices such as smartphones, tablets, and gaming consoles to prevent data loss or system malfunctions due to low voltage events.

Alternative Models

1. NCP380LSN30T1G: Similar to NCP380LSNAJAAT1G but with a fixed reset threshold voltage of 3.0V.
2. NCP380LSN33T1G: Similar to NCP380LSNAJAAT1G but with a fixed reset threshold voltage of 3.3V.
3. NCP380LSN50T1G: Similar to NCP380LSNAJAAT1G but with a fixed reset threshold voltage of 5.0V.
4. NCP380LSN52T1G: Similar to NCP380LSNAJAAT1G