AN79L04ME1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout voltage, high output current capability
• Package: TO-252-3 (DPAK)
• Essence: Linear regulator
• Packaging/Quantity: Tape and reel, 2,500 units per reel

Specifications

• Input Voltage Range: 6V to 26V
• Output Voltage: -4V
• Dropout Voltage: 0.5V (typical)
• Output Current: 100mA (maximum)
• Quiescent Current: 5mA (typical)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AN79L04ME1 has three pins:

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

Functional Features

• Low dropout voltage: The AN79L04ME1 can regulate the output voltage even when the input voltage is close to the desired output voltage.
• High output current capability: It can provide a maximum output current of 100mA, making it suitable for various low-power applications.
• Thermal shutdown protection: The IC includes built-in thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Compact package size allows for space-saving designs. - Low dropout voltage enables efficient regulation. - Wide operating temperature range makes it suitable for harsh environments.

Disadvantages: - Limited output current capability compared to higher-rated regulators. - Negative output voltage limits its application to specific circuits requiring negative voltage.

Working Principles

The AN79L04ME1 is a linear regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusting the pass transistor accordingly. The dropout voltage is minimized by using a PNP transistor as the pass element.

Detailed Application Field Plans

The AN79L04ME1 is commonly used in various electronic devices, including:

1. Battery-powered devices: It can regulate the voltage for microcontrollers, sensors, and other low-power components.
2. Automotive applications: It finds use in automotive electronics, such as dashboard displays, audio systems, and lighting controls.
3. Industrial equipment: It is suitable for powering control circuits, sensors, and communication modules in industrial machinery.

Detailed and Complete Alternative Models

• LM317: Adjustable positive voltage regulator with higher output current capability.
• LM337: Adjustable negative voltage regulator with similar characteristics.
• MC78L05: Fixed positive voltage regulator with lower output current capability.

These alternative models provide different features and specifications, allowing designers to choose the most suitable option for their specific requirements.

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