LM2984CT

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Thermal shutdown protection - Short circuit current limiting - Wide input voltage range

Package: TO-220

Essence: The LM2984CT is a voltage regulator IC that provides a stable output voltage from a varying input voltage source.

Packaging/Quantity: The LM2984CT is typically sold in reels or tubes, with a quantity of 50 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.25V to 37V
• Dropout Voltage: 0.5V (typical)
• Output Current: Up to 1A
• Quiescent Current: 10mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2984CT has the following pin configuration:

```

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| | --| Vin GND |-- --| Vout NC |-- |___________| ```

• Vin: Input voltage pin
• GND: Ground pin
• Vout: Output voltage pin
• NC: No connection pin

Functional Features

• Low Dropout Voltage: The LM2984CT 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 1A, the LM2984CT can provide sufficient power for various applications.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection, which prevents damage due to excessive temperature.
• Short Circuit Current Limiting: The LM2984CT incorporates short circuit current limiting to protect the IC and connected components from damage in case of a short circuit.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 4.5V to 40V, making it suitable for a wide range of applications.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering various devices - Thermal shutdown protection prevents overheating - Short circuit current limiting protects against short circuits - Wide input voltage range allows for versatile use

Disadvantages: - Limited maximum output current (1A) - Requires external components for proper operation

Working Principles

The LM2984CT 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. If the output voltage drops below the desired level, the pass transistor adjusts its resistance to maintain a stable output voltage.

Detailed Application Field Plans

The LM2984CT can be used in various applications where a stable and regulated voltage is required. Some potential application fields include: - Power supplies for electronic devices - Battery-powered systems - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the LM2984CT that offer similar functionality are: - LM317T - LM1117-3.3 - LT1086CT - LM7805

These alternative models provide voltage regulation capabilities and can be considered based on specific requirements and availability.

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