VN920(012Y)

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Adjustable Output Voltage
• Package: TO-92
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape & Reel / 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 13.8V
• Output Current: Up to 150mA
• Dropout Voltage: 300mV typical at 100mA load
• Quiescent Current: 75µA typical
• Line Regulation: 0.04%/V typical
• Load Regulation: 0.1%/mA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The VN920(012Y) IC has three pins:

1. Pin 1 (IN): Input voltage pin. Connects to the positive terminal of the power supply.
2. Pin 2 (GND): Ground pin. Connects to the negative terminal of the power supply.
3. Pin 3 (OUT): Output voltage pin. Provides the regulated output voltage.

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• Adjustable output voltage allows for flexibility in various applications.
• Excellent line and load regulation characteristics ensure stable output voltage under varying conditions.
• Low quiescent current minimizes power consumption when the regulator is idle.
• Thermal shutdown and current limit protection features enhance device reliability.

Advantages and Disadvantages

Advantages: - Wide input voltage range enables compatibility with various power sources. - Adjustable output voltage provides versatility for different circuit requirements. - Low dropout voltage ensures efficient power conversion. - Excellent line and load regulation characteristics ensure stable output voltage. - Thermal shutdown and current limit protection enhance device reliability.

Disadvantages: - Limited output current capability (up to 150mA). - TO-92 package may not be suitable for applications requiring higher power dissipation.

Working Principles

The VN920(012Y) is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage 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 VN920(012Y) is commonly used in various electronic devices and circuits where a stable and adjustable voltage supply is required. Some typical application fields include:

1. Battery-powered devices: Provides regulated voltage for microcontrollers, sensors, and other low-power components.
2. Automotive electronics: Used in automotive modules, such as dashboard displays, infotainment systems, and lighting controls.
3. Industrial control systems: Ensures stable voltage supply for PLCs (Programmable Logic Controllers), motor drives, and sensors.
4. Consumer electronics: Used in portable devices like smartphones, tablets, and digital cameras to regulate battery voltage.

Detailed and Complete Alternative Models

1. LM317: Adjustable voltage regulator with higher output current capability.
2. LT1084: Low dropout voltage regulator with higher output current and wider temperature range.
3. LM1117: Fixed voltage regulator available in various output voltage options.
4. L78xx: Series of fixed voltage regulators with different output voltage options.

These alternative models offer similar functionality but may have different specifications and package options to suit specific application requirements.

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