L79L15ACZ-TR

Product Overview

Category

The L79L15ACZ-TR belongs to the category of linear voltage regulators.

Use

It is primarily used for regulating and stabilizing voltage in electronic circuits.

Characteristics

• Linear voltage regulator
• Fixed output voltage of -15V
• Low dropout voltage
• High ripple rejection
• Thermal shutdown protection

Package

The L79L15ACZ-TR comes in a TO-92 package, which is a small, plastic encapsulated transistor outline package.

Essence

The essence of the L79L15ACZ-TR is its ability to provide a stable and regulated -15V output voltage.

Packaging/Quantity

The L79L15ACZ-TR is typically packaged in reels or tubes and is available in various quantities depending on the manufacturer's specifications.

Specifications

• Output Voltage: -15V
• Input Voltage Range: -17V to -35V
• Dropout Voltage: 2V (maximum)
• Output Current: 100mA
• Ripple Rejection: 60dB (minimum)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L79L15ACZ-TR has three pins:

1. Input (VIN): This pin is connected to the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (VOUT): This pin provides the regulated -15V output voltage.

Functional Features

• Regulates and stabilizes voltage to -15V.
• Provides low dropout voltage, ensuring efficient operation even with low input voltages.
• Offers high ripple rejection, minimizing noise in the output voltage.
• Includes thermal shutdown protection, preventing damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• Provides a fixed -15V output voltage, suitable for various electronic applications.
• Low dropout voltage ensures efficient operation even with low input voltages.
• High ripple rejection minimizes noise in the output voltage.

Disadvantages

• Limited output current of 100mA, restricting its use in high-power applications.
• Requires an input voltage range of -17V to -35V, which may not be suitable for all applications.

Working Principles

The L79L15ACZ-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 amplified to control the series pass transistor, ensuring a stable -15V output voltage.

Detailed Application Field Plans

The L79L15ACZ-TR finds application in various electronic circuits that require a regulated -15V voltage supply. Some common application fields include:

1. Audio Amplifiers: Used to provide a stable power supply for audio amplifiers, ensuring clean and distortion-free sound reproduction.
2. Instrumentation Systems: Utilized in instrumentation systems where precise voltage regulation is crucial for accurate measurements.
3. Industrial Control Systems: Integrated into industrial control systems to maintain a stable voltage supply for reliable operation of control components.
4. Communication Equipment: Employed in communication equipment to regulate voltage for proper functioning of signal processing circuits.

Detailed and Complete Alternative Models

Some alternative models to the L79L15ACZ-TR include:

1. LM337: A negative voltage regulator with adjustable output voltage.
2. LT1963A: A low dropout voltage regulator with adjustable or fixed output voltage options.
3. MC7915: A fixed -15V voltage regulator with similar characteristics to the L79L15ACZ-TR.

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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