LM828M5/NOPB

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: High precision, low dropout voltage, adjustable output, thermal shutdown protection
• Package: TO-220
• Essence: LM828M5/NOPB is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.
• Packaging/Quantity: Available in reels of 1000 units.

Specifications

• Input Voltage Range: 2.7V to 15V
• Output Voltage Range: 1.25V to 13.8V
• Output Current: Up to 1.5A
• Dropout Voltage: 0.4V (typical)
• Quiescent Current: 75µA (typical)
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LM828M5/NOPB has the following pin configuration:

___________ | | IN |1 3| OUT | | GND |2 4| ADJ |___________|

• Pin 1 (IN): Input voltage pin
• Pin 2 (GND): Ground pin
• Pin 3 (OUT): Output voltage pin
• Pin 4 (ADJ): Adjustable pin for setting the output voltage

Functional Features

• High precision: The LM828M5/NOPB provides a highly accurate and stable output voltage, ensuring reliable performance of connected devices.
• Low dropout voltage: With a low dropout voltage, this voltage regulator can operate efficiently even when the input voltage is close to the desired output voltage.
• Adjustable output: The ADJ pin allows users to adjust the output voltage according to their specific requirements.
• Thermal shutdown protection: The IC includes built-in thermal shutdown protection, preventing damage due to excessive heat.

Advantages and Disadvantages

Advantages: - High precision output voltage - Low dropout voltage for efficient operation - Adjustable output voltage for flexibility - Thermal shutdown protection ensures safety

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

Working Principles

The LM828M5/NOPB 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 adjustable pin (ADJ) allows users to set the desired output voltage by connecting appropriate resistors.

When the input voltage exceeds the desired output voltage, the pass transistor reduces the resistance, allowing excess voltage to be dissipated as heat. Conversely, when the input voltage drops below the desired output voltage, the pass transistor increases the resistance to maintain a stable output voltage.

Detailed Application Field Plans

The LM828M5/NOPB is commonly used in various electronic devices that require a stable and regulated power supply. Some typical application fields include:

1. Consumer Electronics: Used in smartphones, tablets, and portable media players to provide a reliable power source for the internal circuitry.
2. Automotive Electronics: Integrated into automotive systems to regulate voltage for sensors, actuators, and other electronic components.
3. Industrial Control Systems: Employed in industrial automation and control systems to ensure stable power supply for PLCs, motor drives, and other equipment.
4. Communication Systems: Utilized in networking devices, routers, and modems to maintain a consistent voltage level for reliable data transmission.

Detailed and Complete Alternative Models

1. LM317T: A popular adjustable voltage regulator with similar characteristics and package type.
2. LM7805: Fixed 5V voltage regulator commonly used in various electronic applications.
3. LM1117-3.3: Low dropout voltage regulator with a fixed output voltage of 3.3V.

These alternative models offer similar functionality and can be considered as substitutes for the LM828M5/NOPB depending on specific requirements.

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