AS78L05ZTR-G1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, 5V Output, Positive Voltage Regulator
• Package: TO-252 (DPAK)
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 7V to 20V
• Output Voltage: 5V
• Output Current: Up to 100mA
• Dropout Voltage: 2V (maximum)
• Quiescent Current: 5mA (maximum)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The AS78L05ZTR-G1 has three pins:

1. Input (VIN): This pin is used to connect the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (VOUT): The regulated 5V output is obtained from this pin.

Functional Features

• Provides a stable 5V output voltage regardless of input variations.
• Low dropout voltage ensures efficient regulation even with low input-output differentials.
• Built-in thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limiting protects the device and the load from excessive current.

Advantages

• Compact TO-252 package allows for easy integration into various electronic circuits.
• Low quiescent current minimizes power consumption in standby or idle modes.
• Wide operating temperature range makes it suitable for harsh environments.
• Excellent line and load regulation ensures stable output voltage under varying conditions.

Disadvantages

• Limited output current capability (up to 100mA) may not be sufficient for high-power applications.
• Dropout voltage of 2V may result in higher power dissipation and reduced efficiency compared to low dropout regulators.

Working Principles

The AS78L05ZTR-G1 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage (5V) with the feedback voltage obtained from a voltage divider connected to the output. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The AS78L05ZTR-G1 is commonly used in various electronic devices and applications, including:

1. Power supplies for microcontrollers, sensors, and other low-power digital circuits.
2. Battery-powered devices requiring a stable 5V supply, such as portable audio players and handheld instruments.
3. Automotive electronics, where it provides regulated power to sensors, actuators, and control modules.
4. Industrial automation systems, where it ensures stable voltage for control circuits and sensors.
5. Consumer electronics, including TVs, set-top boxes, and home appliances.

Detailed and Complete Alternative Models

1. LM7805: A widely used 5V linear voltage regulator available in various packages.
2. MC78L05: Another popular 5V regulator with similar specifications and pin configuration.
3. NCP1117: Low dropout 5V regulator with higher output current capability (up to 1A).
4. LT1763: High-performance 5V regulator with ultra-low dropout voltage and adjustable output.

These alternative models offer different features and capabilities, allowing designers to choose the most suitable option based on their specific requirements.

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