LM3880MFX-1AC/NOPB

Product Overview

Category

The LM3880MFX-1AC/NOPB belongs to the category of voltage supervisors and reset ICs.

Use

This product is primarily used for monitoring and controlling the power supply voltage in electronic systems, ensuring proper operation and preventing damage due to voltage fluctuations.

Characteristics

• Voltage supervisor with adjustable threshold
• Low quiescent current consumption
• Wide operating voltage range
• Small package size
• High accuracy and reliability

Package

The LM3880MFX-1AC/NOPB is available in a small SOT-23-5 package.

Essence

The essence of this product lies in its ability to monitor the power supply voltage and generate a reset signal when the voltage falls below a certain threshold, ensuring the system remains in a known state during power-up or voltage fluctuations.

Packaging/Quantity

The LM3880MFX-1AC/NOPB is typically sold in reels containing 3000 units per reel.

Specifications

• Operating Voltage Range: 1.6V to 5.5V
• Adjustable Reset Threshold Voltage: 0.4V to 4.6V
• Quiescent Current: 3µA (typical)
• Reset Timeout Period: 200ms (typical)
• Power-On Reset Delay: 20ms (typical)

Detailed Pin Configuration

The LM3880MFX-1AC/NOPB has the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. MR (Manual Reset Input)
4. VDD (Supply Voltage)
5. TH (Threshold Adjust)

Functional Features

• Monitors power supply voltage and generates a reset signal when voltage falls below the set threshold.
• Adjustable threshold allows customization for different system requirements.
• Manual reset input allows external control of the reset signal.
• Low quiescent current consumption minimizes power consumption in battery-powered applications.
• Power-on reset delay ensures stable operation during power-up.

Advantages and Disadvantages

Advantages

• Wide operating voltage range makes it suitable for a variety of applications.
• Adjustable threshold provides flexibility to adapt to different voltage levels.
• Small package size saves board space.
• Low quiescent current consumption prolongs battery life in portable devices.
• High accuracy and reliability ensure proper system operation.

Disadvantages

• Lack of built-in protection features against voltage spikes or transients.
• Limited number of pins may restrict additional functionality in complex systems.

Working Principles

The LM3880MFX-1AC/NOPB works by continuously monitoring the power supply voltage. When the voltage falls below the set threshold, the device generates a reset signal, which can be used to reset the microcontroller or other system components. The threshold voltage can be adjusted using an external resistor connected to the TH pin. The device also includes a manual reset input (MR) that allows an external signal to force a reset. The low quiescent current consumption ensures minimal power drain from the power supply.

Detailed Application Field Plans

The LM3880MFX-1AC/NOPB is widely used in various electronic systems where reliable power supply monitoring and reset functionality are crucial. Some application fields include:

1. Microcontrollers and embedded systems
2. Industrial automation and control systems
3. Automotive electronics
4. Medical devices
5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM3880MFX-1AC/NOPB include:

1. MAX809: Voltage supervisor with adjustable threshold and manual reset input.
2. TPS3839: Ultra-low-power voltage supervisor with fixed threshold and power-on reset delay.
3. ADM6315: Microprocessor supervisory circuit with adjustable threshold and watchdog timer.

These alternative models provide options for different voltage ranges, package sizes, and additional features to suit specific application requirements.

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