LE33ABZ

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - Low quiescent current - High output voltage accuracy - Thermal shutdown protection - Short-circuit current limiting - Overcurrent protection

Package: TO-92, SOT-89, DPAK, SO-8

Essence: The LE33ABZ is a voltage regulator IC that provides a stable output voltage from an input voltage source. It is commonly used to regulate and control the voltage levels in electronic circuits.

Packaging/Quantity: The LE33ABZ is available in various package options such as TO-92, SOT-89, DPAK, and SO-8. The quantity per package may vary depending on the manufacturer.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.2V to 15V
• Dropout Voltage: 0.4V (typical)
• Quiescent Current: 50µA (typical)
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LE33ABZ typically has three pins:

1. Input (VIN): This pin is connected to the input voltage source.
2. Output (VOUT): This pin provides the regulated output voltage.
3. Ground (GND): This pin is connected to the ground reference.

Functional Features

• Low Dropout Voltage: The LE33ABZ has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The IC consumes very low current when there is no load, resulting in improved energy efficiency.
• High Output Voltage Accuracy: The LE33ABZ provides a highly accurate output voltage, ensuring stable and reliable performance.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection to prevent overheating and damage under high temperature conditions.
• Short-Circuit Current Limiting: It has built-in short-circuit current limiting to protect the circuit from excessive current flow during a short circuit.
• Overcurrent Protection: The LE33ABZ incorporates overcurrent protection to safeguard against excessive current draw.

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient regulation even with low input-output voltage differentials. - Low quiescent current consumption enhances energy efficiency. - High output voltage accuracy ensures stable performance. - Thermal shutdown protection prevents overheating and damage. - Short-circuit current limiting protects the circuit from excessive current flow. - Overcurrent protection safeguards against excessive current draw.

Disadvantages: - Limited output current capacity (up to 100mA). - May require additional external components for certain applications.

Working Principles

The LE33ABZ operates based on the principle of linear voltage regulation. It uses a pass transistor to control the output voltage by adjusting the resistance between the input and output terminals. The internal feedback mechanism compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LE33ABZ is widely used in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable electronics - Automotive applications - Industrial control systems - Communication equipment - Medical devices

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LE33ABZ are: - LM1117 - LT1086 - LM317 - LP2950 - MCP1700

These alternative models offer similar voltage regulation capabilities and can be used as substitutes depending on specific requirements and application constraints.

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