AN77L03

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low dropout, low quiescent current, high accuracy
• Package: SOT-89
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.0V
• Dropout Voltage: 200mV at 150mA
• Quiescent Current: 50µA
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AN77L03 IC has a total of three pins:

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

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Low quiescent current minimizes power consumption in standby or idle modes.
• High accuracy provides precise voltage regulation for sensitive applications.
• Short-circuit protection safeguards the IC and connected components from damage.

Advantages and Disadvantages

Advantages: - Compact SOT-89 package allows for space-saving integration. - Wide input voltage range enables compatibility with various power sources. - Excellent line and load regulation ensures stable output voltage under varying conditions.

Disadvantages: - Limited maximum output current may restrict usage in high-power applications. - Higher cost compared to non-linear voltage regulators.

Working Principles

The AN77L03 is a linear voltage regulator that utilizes a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The AN77L03 is commonly used in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Digital cameras - Wireless communication modules

Detailed and Complete Alternative Models

1. LM1117: Low dropout voltage regulator with adjustable output voltage.
2. LT1763: Ultra-low dropout linear regulator with high accuracy.
3. TPS7A47: High-performance low-dropout voltage regulator with wide input voltage range.

These alternative models offer similar functionality and can be considered as substitutes for the AN77L03 depending on specific requirements.

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