LM3411M5-3.3/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Small package size

Package: SOT-23-5

Essence: The LM3411M5-3.3/NOPB is a voltage regulator IC designed to provide a stable and adjustable output voltage for various electronic applications.

Packaging/Quantity: The LM3411M5-3.3/NOPB is typically packaged in reels or tubes, with 3000 units per reel or 250 units per tube.

Specifications

• Input Voltage Range: 4.5V to 20V
• Output Voltage Range: 1.25V to 18V
• Dropout Voltage: 200mV at 100mA
• Output Current: Up to 500mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3411M5-3.3/NOPB has the following pin configuration:

```

---

| | --|1 |-- VIN --|2 |-- GND --|3 |-- VOUT --|4 |-- NC --|____|-- NC ```

Functional Features

• Low Dropout Voltage: The LM3411M5-3.3/NOPB exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 500mA, this voltage regulator can power a wide range of electronic devices.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, providing flexibility for different application requirements.
• Thermal Shutdown Protection: The IC includes built-in thermal shutdown protection, which prevents damage due to excessive temperature.
• Small Package Size: The SOT-23-5 package offers a compact form factor, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering various devices - Adjustable output voltage allows customization - Thermal shutdown protection prevents overheating - Compact package size enables use in small designs

Disadvantages: - Limited maximum output current compared to some other voltage regulators - Requires external resistors for adjusting the output voltage

Working Principles

The LM3411M5-3.3/NOPB operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage difference (dropout voltage) between the input and output terminals. This is achieved through an internal pass transistor that adjusts its resistance to maintain the desired output voltage.

When the input voltage exceeds the desired output voltage plus the dropout voltage, the pass transistor remains fully conductive, allowing the output voltage to remain stable. As the input voltage approaches the desired output voltage, the pass transistor starts to reduce its conductivity, compensating for the decreasing voltage difference and ensuring a regulated output voltage.

Detailed Application Field Plans

The LM3411M5-3.3/NOPB finds applications in various electronic systems where a stable and adjustable voltage supply is required. Some potential application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearable devices can benefit from the LM3411M5-3.3/NOPB's low dropout voltage and high output current capability.
2. Embedded Systems: Microcontrollers, sensors, and other embedded systems often require a regulated voltage supply. The LM3411M5-3.3/NOPB can provide the necessary stability and adjustability.
3. Automotive Electronics: The IC's wide input voltage range and thermal shutdown protection make it suitable for automotive applications, such as powering sensors, control modules, and lighting systems.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a higher maximum output current of 1.5A.
2. LM1117: Another adjustable linear voltage regulator with a lower dropout voltage and a maximum output current of 800mA.
3. LT1086: A high-performance adjustable linear voltage regulator with low dropout voltage and a maximum output current of 1.5A.

These alternative models offer different specifications and features, allowing users to choose the most suitable option based on their specific requirements.

Word count: 533 words