NJM79L18UATE1

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics:
  • Low dropout voltage
  • Output current up to 100mA
  • Fixed output voltage of -18V
  • Wide operating temperature range
• Package: SOT-89
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: -35V to -7V
• Output Voltage: -18V ±5%
• Dropout Voltage: 1.2V (typical)
• Output Current: Up to 100mA
• Quiescent Current: 5mA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM79L18UATE1 has a total of three pins:

1. GND (Ground): Connected to the ground reference.
2. Vin (Input Voltage): Connects to the input voltage source.
3. Vout (Output Voltage): Provides the regulated -18V output.

Functional Features

• Low dropout voltage ensures stable operation even with low input-output voltage differentials.
• Fixed output voltage of -18V provides a reliable power supply for various applications.
• Wide operating temperature range allows usage in extreme environments.
• Overcurrent and thermal protection safeguards the device from damage.

Advantages

• Compact SOT-89 package enables space-saving designs.
• Low dropout voltage minimizes power dissipation and improves efficiency.
• High output current capability supports a wide range of applications.
• Excellent line and load regulation characteristics ensure stable output voltage.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Fixed output voltage restricts flexibility in voltage selection.

Working Principles

The NJM79L18UATE1 is a linear voltage regulator that utilizes a negative feedback loop to maintain a stable output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly. This ensures that the output voltage remains constant despite variations in input voltage and load conditions.

Detailed Application Field Plans

The NJM79L18UATE1 is commonly used in various electronic devices and systems, including:

1. Power supplies for audio amplifiers
2. Battery-powered equipment
3. Industrial control systems
4. Automotive electronics
5. Instrumentation and measurement devices

Detailed and Complete Alternative Models

• LM79L18: Similar specifications and pin configuration, available in TO-92 package.
• MC79L18: Comparable performance, available in TO-220 package.
• KA79L18: Equivalent characteristics, offered in SOT-223 package.

Note: These alternative models may have slight differences in package type and dimensions.

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