AN78L24

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout voltage, high output current capability
• Package: TO-92
• Essence: Linear regulator
• Packaging/Quantity: Available in reels of 2,500 units

Specifications

• Input Voltage Range: 7V to 35V
• Output Voltage: 24V
• Output Current: Up to 100mA
• Dropout Voltage: 1.7V (typical)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AN78L24 IC has three pins:

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

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• High output current capability allows for powering various electronic components.
• Built-in thermal shutdown protection prevents overheating and damage to the IC.
• Short-circuit current limiting protects against excessive current flow.

Advantages and Disadvantages

Advantages: - Compact TO-92 package enables easy integration into space-constrained designs. - Wide input voltage range provides flexibility in different applications. - Excellent line and load regulation ensure stable output voltage.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Dropout voltage may cause a significant power loss in low input-output differential scenarios.

Working Principles

The AN78L24 is a linear voltage regulator that maintains a constant output voltage despite variations in the input voltage. It achieves this by using a pass transistor to regulate the output voltage based on a reference voltage. The regulator compares the reference voltage with a fraction of the output voltage and adjusts the pass transistor accordingly.

Detailed Application Field Plans

The AN78L24 is commonly used in various electronic devices and applications, including: 1. Power supplies for microcontrollers and other low-power digital circuits. 2. Battery-powered systems requiring a stable voltage source. 3. Automotive electronics, such as dashboard displays and audio systems. 4. Industrial control systems and instrumentation. 5. Consumer electronics, including audio amplifiers and portable devices.

Detailed and Complete Alternative Models

• LM7805: 5V linear voltage regulator with higher output current capability.
• LT1084: Adjustable linear voltage regulator with lower dropout voltage.
• LM317: Adjustable linear voltage regulator with higher output current and wider input voltage range.

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