NJM78L09UA-TE2

Product Overview

Category

The NJM78L09UA-TE2 belongs to the category of linear voltage regulators.

Use

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

Characteristics

• Voltage Regulation: The NJM78L09UA-TE2 provides a fixed output voltage of 9 volts.
• Low Dropout: It has a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Current Limiting: The device incorporates current limiting protection, safeguarding the connected circuitry from excessive current flow.
• Thermal Shutdown: It includes a thermal shutdown feature that protects the regulator from overheating.

Package

The NJM78L09UA-TE2 is available in a TO-220 package, which allows for easy mounting on printed circuit boards (PCBs).

Essence

The essence of this product lies in its ability to provide a stable and regulated 9-volt output voltage, ensuring reliable operation of electronic devices.

Packaging/Quantity

The NJM78L09UA-TE2 is typically packaged in reels or tubes, containing a specific quantity of units per package. Please refer to the manufacturer's specifications for detailed packaging information.

Specifications

• Input Voltage Range: 10V - 35V
• Output Voltage: 9V
• Output Current: Up to 100mA
• Dropout Voltage: 1.7V (max)
• Quiescent Current: 5mA (typ)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM78L09UA-TE2 has three pins:

1. Input (VIN): This pin receives the unregulated input voltage.
2. Ground (GND): This pin is connected to the ground reference of the circuit.
3. Output (VOUT): This pin provides the regulated 9-volt output voltage.

Functional Features

• Voltage Regulation: The NJM78L09UA-TE2 maintains a constant output voltage of 9 volts, regardless of changes in the input voltage or load conditions.
• Current Limiting: It incorporates current limiting protection, preventing excessive current flow and protecting the connected circuitry.
• Thermal Shutdown: The device includes a thermal shutdown feature that activates when the temperature exceeds a certain threshold, ensuring safe operation.

Advantages and Disadvantages

Advantages

• Stable Output: Provides a stable and regulated 9-volt output voltage.
• Low Dropout: Works efficiently even with small differences between input and output voltages.
• Current Limiting Protection: Safeguards the circuit from excessive current flow.
• Thermal Shutdown: Protects the regulator from overheating.

Disadvantages

• Limited Output Current: The NJM78L09UA-TE2 can supply a maximum output current of 100mA, which may not be sufficient for high-power applications.
• Fixed Output Voltage: The output voltage is fixed at 9 volts, limiting its versatility in applications requiring different voltage levels.

Working Principles

The NJM78L09UA-TE2 operates based on the principle of linear voltage regulation. It utilizes 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 pass transistor, maintaining a constant output voltage.

Detailed Application Field Plans

The NJM78L09UA-TE2 finds application in various electronic circuits where a stable 9-volt power supply is required. Some common application fields include:

1. Consumer Electronics: Used in audio amplifiers, portable devices, and battery-powered equipment.
2. Automotive Electronics: Employed in automotive audio systems, lighting controls, and dashboard displays.
3. Industrial Control Systems: Utilized in control panels, sensors, and instrumentation devices.
4. Communication Systems: Integrated into wireless routers, modems, and network switches.

Detailed and Complete Alternative Models

1. LM7809: A popular alternative from Texas Instruments with similar specifications and pin configuration.
2. MC78L09: Another alternative from ON Semiconductor offering comparable performance characteristics.
3. UA78L09: An alternative from Fairchild Semiconductor that provides a regulated 9-volt output.

Please note that the above alternatives may have slight variations in specifications and packaging. It is recommended to refer to the respective datasheets for detailed information.

Word count: 619 words