LM120H-12/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High precision - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: TO-220

Essence: The LM120H-12/NOPB is a voltage regulator IC that provides a stable and adjustable output voltage with high precision. It is commonly used in electronic circuits to regulate the voltage supplied to various components.

Packaging/Quantity: The LM120H-12/NOPB is typically sold in a TO-220 package, which is a widely used package type for power semiconductors. It is available in various quantities depending on the supplier.

Specifications

• Input Voltage Range: 14V - 35V
• Output Voltage Range: 1.2V - 12V
• Dropout Voltage: 0.5V (typical)
• Output Current: Up to 1.5A
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/A
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM120H-12/NOPB 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

• High Precision: The LM120H-12/NOPB offers a high level of voltage regulation accuracy, ensuring stable and reliable performance.
• Low Dropout Voltage: With a low dropout voltage, this voltage regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The LM120H-12/NOPB allows users to adjust the output voltage within a specified range, providing flexibility for different application requirements.
• Overcurrent Protection: It incorporates overcurrent protection circuitry to safeguard the IC and connected components from excessive current flow.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection, which automatically shuts down the device if the temperature exceeds a safe operating limit.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Low dropout voltage - Adjustable output voltage - Overcurrent and thermal protection - Reliable performance

Disadvantages: - Limited output current capacity (up to 1.5A) - Requires external components for proper operation

Working Principles

The LM120H-12/NOPB operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage. By continuously monitoring and adjusting the voltage, it compensates for any variations in the input voltage or load conditions, ensuring a consistent output voltage.

Detailed Application Field Plans

The LM120H-12/NOPB finds applications in various electronic systems where precise voltage regulation is required. Some common application fields include:

1. Power Supply Units: It can be used in power supply units to regulate the voltage supplied to sensitive electronic components, ensuring their proper functioning.
2. Audio Amplifiers: The LM120H-12/NOPB can provide a stable voltage supply to audio amplifiers, preventing distortion and improving sound quality.
3. Battery Charging Systems: It can be employed in battery charging systems to regulate the charging voltage, protecting the batteries from overcharging and extending their lifespan.
4. Automotive Electronics: This voltage regulator is suitable for automotive electronics, such as car audio systems, GPS devices, and dashboard displays, ensuring stable voltage supply despite fluctuations in the vehicle's electrical system.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with a wide input voltage range and adjustable output voltage.
2. LM7805: A fixed 5V voltage regulator commonly used in electronic circuits requiring a stable 5V power supply.
3. LT1084: A high-current adjustable voltage regulator capable of delivering up to 5A of output current.
4. LM1117: A low dropout voltage regulator available in various fixed output voltage options.

These alternative models offer similar functionality to the LM120H-12/NOPB and can be considered based on specific application requirements.

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