NJM78L15A

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Fixed Output Voltage
• Package: TO-92
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2000 units per reel

Specifications

• Input Voltage Range: 17V to 30V
• Output Voltage: +15V
• Output Current: 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 5mA (maximum)
• Line Regulation: 0.04%/V (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM78L15A has three pins:

1. Input Pin (VIN): Connects to the input voltage source.
2. Ground Pin (GND): Connected to the ground reference.
3. Output Pin (VOUT): Provides the regulated output voltage.

Functional Features

• Voltage Regulation: The NJM78L15A regulates the input voltage to a fixed +15V output voltage.
• Low Dropout: It has a low dropout voltage of maximum 2V, ensuring efficient regulation even with low input voltages.
• Short Circuit Protection: The IC includes internal short circuit protection, preventing damage in case of a short circuit on the output side.
• Thermal Shutdown: It incorporates thermal shutdown protection, which disables the device if the temperature exceeds the safe operating range.

Advantages and Disadvantages

Advantages

• Simple and compact design
• Easy to use and integrate into various circuits
• Low dropout voltage ensures efficient regulation
• Internal short circuit and thermal protection enhance reliability

Disadvantages

• Limited output current capability (100mA)
• Fixed output voltage may not be suitable for all applications

Working Principles

The NJM78L15A 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 output voltage.

Detailed Application Field Plans

The NJM78L15A is commonly used in various electronic devices and circuits, including:

1. Power supplies for microcontrollers and other digital ICs.
2. Audio amplifiers and preamplifiers.
3. Battery-powered devices requiring a regulated +15V supply.
4. Automotive electronics.
5. Industrial control systems.

Detailed and Complete Alternative Models

1. LM78L15: Similar specifications and pin configuration, available in different packages.
2. MC78L15: Equivalent performance, available in TO-92 package.
3. UA78L15: Comparable characteristics, offered in various package options.

These alternative models provide similar functionality and can be used as replacements for the NJM78L15A in different applications.

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