L78L09ACZ-TR

Product Overview

Category

L78L09ACZ-TR belongs to the category of linear voltage regulators.

Use

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

Characteristics

• Input Voltage Range: 10V to 35V
• Output Voltage: 9V
• Maximum Output Current: 100mA
• Dropout Voltage: 2V
• Low Quiescent Current: 4.5mA
• Thermal Overload Protection
• Short Circuit Protection

Package

L78L09ACZ-TR is available in a TO-92 package.

Essence

The essence of L78L09ACZ-TR is to provide a stable and regulated 9V output voltage from a higher input voltage source.

Packaging/Quantity

L78L09ACZ-TR is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Input Voltage Range: 10V to 35V
• Output Voltage: 9V
• Output Current: 100mA (maximum)
• Dropout Voltage: 2V
• Quiescent Current: 4.5mA (typical)
• Operating Temperature Range: -40°C to +125°C
• Thermal Resistance: 50°C/W (junction to ambient)

Pin Configuration

L78L09ACZ-TR has three pins:

1. Input (Vin): Connects to the input voltage source.
2. Ground (GND): Connected to the ground reference.
3. Output (Vout): Provides the regulated 9V output voltage.

Functional Features

• Regulates and stabilizes the output voltage at 9V.
• Provides thermal overload protection.
• Offers short circuit protection.
• Low quiescent current consumption.
• Wide input voltage range for flexibility.

Advantages

• Simple and easy to use.
• Compact TO-92 package for space-constrained applications.
• Reliable voltage regulation.
• Suitable for a wide range of electronic circuits.
• Affordable and readily available in the market.

Disadvantages

• Limited maximum output current (100mA).
• Dropout voltage of 2V may not be suitable for low voltage applications.
• Requires external capacitors for stability in some cases.

Working Principles

L78L09ACZ-TR is a linear voltage regulator that utilizes a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable 9V output. The regulator also incorporates thermal overload and short circuit protection mechanisms to ensure safe operation.

Detailed Application Field Plans

L78L09ACZ-TR finds applications in various electronic devices and circuits, including but not limited to:

1. Power supply units
2. Battery chargers
3. Audio amplifiers
4. Microcontroller systems
5. Sensor interfaces
6. LED lighting systems
7. Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to L78L09ACZ-TR are:

1. LM7809: A popular linear voltage regulator with similar specifications.
2. MC7809: Another widely used linear voltage regulator offering 9V output.
3. UA78M09: A positive voltage regulator with a higher output current capability.

These alternative models provide similar functionality and can be used as substitutes based on specific requirements.

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