NJM79L09UA-TE1

Product Overview

Category

NJM79L09UA-TE1 belongs to the category of voltage regulators.

Use

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

Characteristics

• Input Voltage Range: -35V to -10V
• Output Voltage: -9V
• Maximum Output Current: 100mA
• Low Dropout Voltage: 1.2V (typical)
• Thermal Shutdown Protection
• Short Circuit Protection
• Small Package Size: SOT-89

Packaging/Quantity

NJM79L09UA-TE1 is available in a standard SOT-89 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: -35V to -10V
• Output Voltage: -9V
• Output Current: 100mA (maximum)
• Dropout Voltage: 1.2V (typical)
• Line Regulation: 0.04%/V (typical)
• Load Regulation: 0.4% (typical)
• Quiescent Current: 5mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The NJM79L09UA-TE1 voltage regulator has three pins:

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

Functional Features

• Voltage Regulation: NJM79L09UA-TE1 ensures a stable output voltage of -9V, regardless of variations in the input voltage.
• Thermal Shutdown Protection: The regulator automatically shuts down if the temperature exceeds the safe operating limit, protecting the device from damage.
• Short Circuit Protection: In case of a short circuit, the regulator limits the output current to prevent damage to the circuit.

Advantages and Disadvantages

Advantages

• Compact Size: The SOT-89 package allows for space-efficient integration into electronic circuits.
• Wide Input Voltage Range: NJM79L09UA-TE1 can handle a wide range of input voltages, making it versatile for various applications.
• Thermal and Short Circuit Protection: The built-in protection features enhance the reliability and durability of the device.

Disadvantages

• Limited Output Current: The maximum output current of 100mA may not be sufficient for high-power applications.
• Dropout Voltage: The 1.2V dropout voltage may cause a slight decrease in efficiency when compared to low-dropout regulators.

Working Principles

NJM79L09UA-TE1 is a linear voltage regulator that uses 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.

Detailed Application Field Plans

NJM79L09UA-TE1 finds applications in various electronic devices and systems, including:

1. Power Supply Units: It can be used to regulate the voltage in power supply units, ensuring a stable output for other components.
2. Audio Amplifiers: The voltage regulator helps maintain a consistent power supply for audio amplifiers, reducing noise and distortion.
3. Industrial Control Systems: It is suitable for regulating voltage in industrial control systems, providing reliable power to sensors, actuators, and microcontrollers.
4. Automotive Electronics: NJM79L09UA-TE1 can be utilized in automotive electronics to stabilize voltage for various components, such as sensors and control modules.

Detailed and Complete Alternative Models

Some alternative models to NJM79L09UA-TE1 include:

1. LM79L09: A similar voltage regulator with the same -9V output voltage and SOT-89 package.
2. MC79L09: Another -9V voltage regulator available in various package options, including TO-92 and SOT-223.
3. UA79L09: A popular -9V linear voltage regulator offered in a TO-92 package.

These alternative models provide similar functionality and can be used as substitutes for NJM79L09UA-TE1 depending on specific requirements.

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