LM140LAH-15/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High precision - Low dropout voltage - Adjustable output voltage - Current limiting and thermal shutdown protection

Package: TO-220

Essence: The LM140LAH-15/NOPB is a voltage regulator IC that provides a stable output voltage with high precision and low dropout voltage. It is commonly used in various electronic devices to regulate and maintain a constant voltage level.

Packaging/Quantity: The LM140LAH-15/NOPB is typically packaged in a TO-220 package, which is a widely used package for power semiconductor devices. It is available in various quantities depending on the manufacturer and distributor.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.25V to 37V
• Dropout Voltage: 0.5V (typical)
• Output Current: Up to 1.5A
• Line Regulation: 0.02% (typical)
• Load Regulation: 0.04% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM140LAH-15/NOPB has three pins:

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

Functional Features

• High Precision: The LM140LAH-15/NOPB offers high precision voltage regulation, ensuring a stable output voltage even under varying input conditions.
• Low Dropout Voltage: With a low dropout voltage of only 0.5V, the IC can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The LM140LAH-15/NOPB allows for adjustable output voltage within the specified range, providing flexibility in various applications.
• Current Limiting and Thermal Shutdown Protection: The IC incorporates current limiting and thermal shutdown protection mechanisms to prevent damage due to excessive current or temperature.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Low dropout voltage - Adjustable output voltage - Current limiting and thermal shutdown protection

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

Working Principles

The LM140LAH-15/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 constant output voltage. By continuously monitoring the output voltage, the IC compensates for any changes in the input voltage or load conditions, ensuring a stable output.

Detailed Application Field Plans

The LM140LAH-15/NOPB finds applications in various electronic devices and systems, including but not limited to: - Power supplies - Battery chargers - Audio amplifiers - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

• LM317: Adjustable voltage regulator with higher output current capacity.
• LM7805: Fixed 5V voltage regulator with higher output current capacity.
• LM1117: Low dropout voltage regulator with adjustable output voltage.

These alternative models offer similar functionality to the LM140LAH-15/NOPB but may have different specifications and package options.

In conclusion, the LM140LAH-15/NOPB is a voltage regulator IC that provides high precision, low dropout voltage, and adjustable output voltage. It is commonly used in various electronic devices and systems for stable voltage regulation.