LMR822FV-GE2

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency voltage regulator - Low dropout voltage - Wide input voltage range - Adjustable output voltage - Thermal shutdown protection - Overcurrent protection

Package: SOT-23-5

Essence: The LMR822FV-GE2 is a voltage regulator IC designed for power management applications. It provides efficient and reliable voltage regulation with low dropout voltage, making it suitable for various electronic devices.

Packaging/Quantity: The LMR822FV-GE2 is available in a SOT-23-5 package. Each package contains one IC.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Dropout Voltage: 200mV (typical)
• Maximum Output Current: 500mA
• Quiescent Current: 45µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LMR822FV-GE2 has five pins arranged as follows:

1. GND (Ground): Connected to the ground reference of the circuit.
2. EN (Enable): Controls the enable/disable state of the regulator.
3. FB (Feedback): Connects to an external resistor divider network to set the output voltage.
4. VIN (Input Voltage): Connects to the input voltage source.
5. VOUT (Output Voltage): Provides the regulated output voltage.

Functional Features

• High Efficiency: The LMR822FV-GE2 offers high efficiency power conversion, minimizing energy loss during voltage regulation.
• Adjustable Output Voltage: The output voltage can be easily adjusted using an external resistor divider network, providing flexibility for different applications.
• Thermal Shutdown Protection: The IC includes a thermal shutdown feature that protects it from overheating, ensuring safe operation.
• Overcurrent Protection: The LMR822FV-GE2 incorporates overcurrent protection, safeguarding the circuit and connected devices from excessive current.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range - Adjustable output voltage - Thermal and overcurrent protection

Disadvantages: - Limited maximum output current (500mA)

Working Principles

The LMR822FV-GE2 operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with a reference voltage. By adjusting the resistance values in the external resistor divider network connected to the FB pin, the desired output voltage can be set. The regulator maintains a stable output voltage even when the input voltage varies within the specified range.

Detailed Application Field Plans

The LMR822FV-GE2 is suitable for various applications, including but not limited to: 1. Battery-powered devices 2. Portable electronics 3. IoT (Internet of Things) devices 4. Wearable devices 5. Automotive electronics

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with higher maximum output current (up to 1.5A).
2. LT1763: Low dropout voltage regulator with ultra-low quiescent current, ideal for battery-powered applications.
3. TPS7A47: High-performance voltage regulator with wide input voltage range and low noise output.

These alternative models offer similar functionality to the LMR822FV-GE2 and can be considered based on specific requirements and application needs.

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