AN79L09

Product Overview

Category

AN79L09 belongs to the category of voltage regulators.

Use

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

Characteristics

• AN79L09 is a low-dropout voltage regulator.
• It has a fixed output voltage of -9V.
• The device operates with a maximum input voltage of -35V.
• It can provide a maximum output current of 100mA.

Package

AN79L09 is available in a TO-92 package, which is a small plastic package with three leads.

Essence

The essence of AN79L09 lies in its ability to maintain a stable -9V output voltage despite fluctuations in the input voltage.

Packaging/Quantity

AN79L09 is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the manufacturer.

Specifications

• Input Voltage Range: -10V to -35V
• Output Voltage: -9V (fixed)
• Output Current: Up to 100mA
• Dropout Voltage: 1.2V (maximum)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

AN79L09 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 -9V output voltage.

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• Built-in thermal shutdown protection prevents the device from overheating.
• Short-circuit protection safeguards the regulator and the connected circuitry.

Advantages and Disadvantages

Advantages

• Compact size and easy integration into various electronic circuits.
• Stable output voltage despite input voltage fluctuations.
• Thermal and short-circuit protection enhance reliability.

Disadvantages

• Limited output current capacity (up to 100mA).
• Fixed output voltage may not be suitable for all applications.

Working Principles

AN79L09 operates based on the principle of a linear voltage regulator. It uses a series pass transistor to regulate the output voltage. The device compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a constant -9V output.

Detailed Application Field Plans

AN79L09 finds applications in various electronic devices and circuits, including but not limited to: - Audio amplifiers - Power supplies - Battery chargers - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for AN79L09 include: - LM79L09 - MC79L09 - UA79L09 - L79L09

These models have similar specifications and pin configurations, making them suitable replacements for AN79L09 in many applications.

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