NJM78L15UA

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Fixed Output Voltage
• Package: TO-92
• Essence: Linear Regulator
• Packaging/Quantity: Bulk, 100 pieces per pack

Specifications

• Input Voltage Range: 17V to 30V
• Output Voltage: +15V
• Output Current: 100mA
• Dropout Voltage: 2V (typical)
• Line Regulation: ±0.04%/V
• Load Regulation: ±0.3%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NJM78L15UA has three pins: 1. Input (IN): Connects to the input voltage source. 2. Ground (GND): Connected to the ground reference. 3. Output (OUT): Provides the regulated output voltage.

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• Fixed output voltage of +15V eliminates the need for external voltage setting components.
• Internal thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limiting protects the device and connected circuitry from overcurrent conditions.

Advantages

• Compact TO-92 package allows for easy integration into various electronic circuits.
• Stable and accurate output voltage ensures reliable performance.
• Wide operating temperature range enables usage in extreme environmental conditions.
• Low dropout voltage minimizes power dissipation and improves efficiency.

Disadvantages

• Limited output current capability restricts its use in high-power applications.
• Fixed output voltage may not be suitable for designs requiring adjustable voltage levels.

Working Principles

The NJM78L15UA is a linear voltage regulator that utilizes a series pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor to maintain a constant output voltage. The dropout voltage is minimized by employing a low saturation voltage transistor.

Detailed Application Field Plans

The NJM78L15UA finds applications in various electronic systems, including: 1. Power supplies for microcontrollers and digital circuits. 2. Battery-powered devices requiring a stable +15V supply. 3. Automotive electronics, such as dashboard displays and audio systems. 4. Industrial control systems and instrumentation. 5. Audio amplifiers and preamplifiers.

Detailed and Complete Alternative Models

• LM78L15: Similar specifications and pin configuration, available in different package options.
• MC78L15: Equivalent voltage regulator with comparable performance characteristics.
• UA78L15: Alternative manufacturer offering a compatible device with identical functionality.

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