VN920D-B5

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Wide input voltage range - Thermal shutdown protection - Short-circuit protection

Package: TO-252-3 (DPAK)

Essence: The VN920D-B5 is a voltage regulator IC designed to provide a stable output voltage from a varying input voltage source.

Packaging/Quantity: The VN920D-B5 is available in tape and reel packaging, with 2,500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.25V to 37V
• Dropout Voltage: 0.6V typical at 1A load
• Output Current: Up to 1.5A
• Quiescent Current: 10mA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The VN920D-B5 has three pins:

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

Functional Features

• Low Dropout Voltage: The VN920D-B5 has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 1.5A, the VN920D-B5 can handle high current loads.
• Wide Input Voltage Range: The IC can operate with input voltages ranging from 4.5V to 40V, making it suitable for a wide range of applications.
• Thermal Shutdown Protection: The VN920D-B5 includes thermal shutdown protection to prevent overheating and damage to the IC.
• Short-Circuit Protection: The IC is equipped with short-circuit protection, which safeguards against excessive current flow in case of a short circuit.

Advantages and Disadvantages

Advantages: - Stable output voltage regulation - Wide input voltage range - High output current capability - Thermal and short-circuit protection

Disadvantages: - Dropout voltage may cause some power loss - Limited output current compared to higher-rated regulators

Working Principles

The VN920D-B5 operates based on the principle of a linear voltage regulator. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output pins. The internal circuitry 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 VN920D-B5 can be used in various applications that require stable voltage regulation, such as: - Power supplies for microcontrollers and other digital circuits - Battery-powered devices - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models to the VN920D-B5 include: - LM317: A popular adjustable voltage regulator with similar characteristics. - L7805: A fixed 5V voltage regulator commonly used in electronic circuits. - LT1084: A high-current adjustable voltage regulator suitable for demanding applications.

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

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