LM3822MM-2.0/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: 8-Pin SOIC (Small Outline Integrated Circuit)

Essence: The LM3822MM-2.0/NOPB is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The LM3822MM-2.0/NOPB is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage Range: 1.25V to 18V
• Dropout Voltage: 300mV at 500mA
• Maximum Output Current: 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3822MM-2.0/NOPB has the following pin configuration:

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| | --| Vout | --| (Pin 1) | --|___________| | | --| Vin | --| (Pin 2) | --|___________| | | --| GND | --| (Pin 3) | --|___________| | | --| NC | --| (Pin 4) | --|___________| | | --| EN | --| (Pin 5) | --|___________| | | --| FB | --| (Pin 6) | --|___________| | | --| NC | --| (Pin 7) | --|___________| | | --| Vref | --| (Pin 8) | --|___________| ```

Functional Features

• High Efficiency: The LM3822MM-2.0/NOPB offers high efficiency, minimizing power loss and maximizing battery life in portable devices.
• Low Dropout Voltage: With a low dropout voltage of 300mV at 500mA, the IC can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 1.25V to 18V, providing flexibility for various applications.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
• Thermal Shutdown Protection: To prevent overheating, the LM3822MM-2.0/NOPB includes thermal shutdown protection, automatically shutting down the regulator if the temperature exceeds a safe threshold.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Adjustable output voltage allows for versatile application scenarios. - Overcurrent and thermal shutdown protection enhance system reliability.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - The 8-pin SOIC package may require additional space on the PCB compared to smaller packages.

Working Principles

The LM3822MM-2.0/NOPB operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with a reference voltage (Vref pin). The error amplifier inside the IC adjusts the pass transistor to maintain a stable output voltage, compensating for changes in the input voltage and load conditions.

Detailed Application Field Plans

The LM3822MM-2.0/NOPB is commonly used in various electronic devices and applications, including but not limited to: - Battery-powered devices - Portable audio players - Wireless communication systems - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM3822MM-2.0/NOPB include: - LM317: Adjustable Voltage Regulator IC with higher maximum output current. - LM1117: Fixed Voltage Regulator IC with various fixed output voltage options. - LT1083: High Current Linear Regulator IC with adjustable output voltage.

These alternative models can be considered based on specific application requirements and desired features.

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