L78L33ABD-TR

Product Overview

Category

The L78L33ABD-TR belongs to the category of voltage regulators.

Use

It is primarily used to regulate and stabilize voltage levels in electronic circuits.

Characteristics

• Voltage regulation: The L78L33ABD-TR provides a fixed output voltage of 3.3V.
• Low dropout voltage: It operates efficiently even when the input voltage is close to the desired output voltage.
• Current limiting and thermal shutdown protection: These features ensure the safety and reliability of the device.
• Wide operating temperature range: The L78L33ABD-TR can function reliably in various environmental conditions.

Package

The L78L33ABD-TR is available in a TO-252 (DPAK) package.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage for electronic devices.

Packaging/Quantity

The L78L33ABD-TR is typically packaged in reels, with each reel containing a specific quantity of units. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Input voltage range: 4.75V to 20V
• Output voltage: 3.3V
• Output current: Up to 100mA
• Dropout voltage: 1.7V (maximum)
• Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

The L78L33ABD-TR has three pins:

1. Input (VIN): This pin receives the input voltage that needs to be regulated.
2. Ground (GND): This pin is connected to the ground reference of the circuit.
3. Output (VOUT): The regulated output voltage is provided through this pin.

Functional Features

• Voltage regulation: The L78L33ABD-TR ensures a stable output voltage of 3.3V, regardless of input voltage fluctuations.
• Current limiting: It protects the circuit by limiting the maximum current that can flow through the device.
• Thermal shutdown protection: In case of excessive temperature, the L78L33ABD-TR shuts down to prevent damage.

Advantages and Disadvantages

Advantages

• Compact size and easy to integrate into circuits.
• Wide operating temperature range allows for use in various environments.
• Provides a stable output voltage, ensuring reliable performance of electronic devices.

Disadvantages

• Limited output current capacity (up to 100mA).
• Dropout voltage may cause some power loss in certain applications.

Working Principles

The L78L33ABD-TR operates based on the principle of linear voltage regulation. It uses a series pass transistor to regulate the output voltage. The input voltage is compared to a reference voltage, and the difference is adjusted by controlling the pass transistor. This ensures a constant output voltage despite variations in the input voltage.

Detailed Application Field Plans

The L78L33ABD-TR finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Microcontrollers and microprocessors - Communication equipment - Industrial automation systems - Automotive electronics

Detailed and Complete Alternative Models

1. LM317: A versatile adjustable voltage regulator with a wide input voltage range.
2. LM7805: A fixed 5V voltage regulator commonly used in many electronic applications.
3. LT1084: A high-current, low-dropout voltage regulator suitable for demanding applications.

These alternative models offer different features and specifications, providing flexibility in choosing the most suitable voltage regulator for specific requirements.

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