AZ78L09RTR-E1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Positive Fixed Voltage Regulator
• Package: TO-252-3 (DPAK)
• Essence: The AZ78L09RTR-E1 is a voltage regulator IC that provides a fixed positive output voltage of 9V with low dropout voltage.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 10.5V to 35V
• Output Voltage: 9V
• Output Current: Up to 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 4mA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AZ78L09RTR-E1 has three pins:

1. Input Pin (VIN): This pin is used to connect the input voltage source.
2. Ground Pin (GND): This pin is connected to the ground reference.
3. Output Pin (VOUT): The regulated output voltage of 9V is obtained from this pin.

Functional Features

• Low dropout voltage ensures efficient regulation even when the input voltage is close to the desired output voltage.
• Built-in thermal shutdown protection prevents the IC from overheating.
• Short-circuit current limiting protects the IC and the load from excessive current.
• Wide operating temperature range allows for reliable operation in various environments.

Advantages and Disadvantages

Advantages: - Provides a stable and regulated output voltage of 9V. - Low dropout voltage enables efficient power conversion. - Compact TO-252-3 package allows for easy integration into electronic circuits. - Thermal shutdown and short-circuit protection enhance reliability.

Disadvantages: - Limited output current capability (up to 100mA). - Input voltage range is restricted to 10.5V to 35V.

Working Principles

The AZ78L09RTR-E1 is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from a voltage divider network. The series pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in the input voltage and load conditions.

Detailed Application Field Plans

The AZ78L09RTR-E1 is commonly used in various electronic devices and applications, including:

1. Power supply circuits for microcontrollers and other digital ICs.
2. Battery-powered devices requiring a stable 9V power source.
3. Audio amplifiers and preamplifiers.
4. Industrial control systems.
5. Automotive electronics.

Detailed and Complete Alternative Models

1. LM7809: This is a popular alternative from Texas Instruments, offering similar specifications and functionality.
2. MC78L09: Manufactured by ON Semiconductor, this voltage regulator provides a fixed 9V output with low dropout voltage.
3. NJM78L09UA: An alternative option from New Japan Radio, featuring a TO-220 package and comparable performance.

These alternative models can be considered based on specific requirements and availability.

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