LM611CM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short circuit protection

Package: SOIC (Small Outline Integrated Circuit)

Essence: The LM611CM/NOPB is a voltage regulator IC that provides a stable output voltage regardless of input voltage fluctuations.

Packaging/Quantity: The LM611CM/NOPB is available in a standard SOIC package. It is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 13.8V
• Dropout Voltage: 0.4V at 1A load current
• Output Current: Up to 1.5A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM611CM/NOPB has the following pin configuration:

1. VOUT: Output Voltage
2. ADJ: Adjust Pin for Output Voltage Setting
3. VIN: Input Voltage
4. GND: Ground

Functional Features

• Low Dropout Voltage: The LM611CM/NOPB has 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 1.5A, the LM611CM/NOPB can handle high current loads.
• Adjustable Output Voltage: The ADJ pin allows users to adjust the output voltage within the specified range.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
• Short Circuit Protection: The LM611CM/NOPB includes short circuit protection, safeguarding the IC and connected components in case of a short circuit.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures stable output even with low input voltage. - High output current capability allows for powering various loads. - Adjustable output voltage provides flexibility in different applications. - Thermal shutdown and short circuit protection enhance reliability.

Disadvantages: - Limited output voltage range compared to some other voltage regulator ICs. - Higher quiescent current compared to certain low-power alternatives.

Working Principles

The LM611CM/NOPB is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage through a feedback network. The error amplifier adjusts the pass transistor's resistance to maintain a constant output voltage despite changes in the input voltage or load conditions.

Detailed Application Field Plans

The LM611CM/NOPB finds applications in various fields, including: 1. Power supplies for microcontrollers and digital circuits 2. Battery-powered devices 3. Automotive electronics 4. Industrial control systems 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the LM611CM/NOPB include: 1. LM317: Adjustable voltage regulator with higher output voltage range. 2. LM7805: Fixed 5V voltage regulator with lower dropout voltage. 3. LT1083: High-current adjustable voltage regulator with lower quiescent current.

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

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