VN920SO

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: SO-8 (Small Outline 8-pin package)

Essence: The VN920SO is a voltage regulator IC that provides a stable output voltage regardless of variations in the input voltage.

Packaging/Quantity: The VN920SO is available in a small outline 8-pin package. It is typically sold in reels containing multiple units.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.2V 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

Pin Configuration

The VN920SO has the following pin configuration:

```

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| | --| Vout Vin|-- --| GND EN |-- --| NC NC |-- |___________| ```

Pin Description: - Vout: Output voltage pin - Vin: Input voltage pin - GND: Ground pin - EN: Enable pin (active high) - NC: No connection (unused pins)

Functional Features

• Low Dropout Voltage: The VN920SO 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 VN920SO can provide sufficient power for various applications.
• Thermal Shutdown Protection: The IC includes a thermal shutdown feature that protects it from overheating, ensuring safe operation.
• Short-Circuit Current Limiting: In the event of a short circuit, the VN920SO limits the output current to prevent damage to the IC and connected components.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 4.5V to 40V, making it suitable for a wide range of applications.

Advantages and Disadvantages

Advantages: - Stable output voltage - Wide input voltage range - High output current capability - Thermal shutdown protection - Short-circuit current limiting

Disadvantages: - Dropout voltage may affect efficiency in low input voltage scenarios - Limited pin configuration options

Working Principles

The VN920SO is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the output voltage with a reference voltage and adjusts the pass transistor's resistance to maintain a stable output voltage. The enable pin allows the user to control the regulator's operation by enabling or disabling the output.

Detailed Application Field Plans

The VN920SO is commonly used in various electronic devices and systems, including: 1. Power supplies 2. Battery-powered devices 3. Automotive electronics 4. Industrial control systems 5. Communication equipment

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar features and capabilities.
2. LT1084: A high-current, low dropout voltage regulator suitable for demanding applications.
3. LM1117: A low dropout voltage regulator available in various fixed output voltage options.

These alternative models offer similar functionality and can be considered as alternatives to the VN920SO based on specific application requirements.

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