LM2825HN-ADJ

Product Overview

Category: Voltage Regulator
Use: LM2825HN-ADJ is a voltage regulator designed to provide an adjustable output voltage from a higher input voltage source. It is commonly used in electronic circuits where a stable and regulated power supply is required.
Characteristics: This device offers high efficiency, low dropout voltage, and a wide input voltage range. It is capable of delivering up to 1.5A of output current.
Package: LM2825HN-ADJ comes in a compact TO-263 package, which provides excellent thermal performance.
Essence: The essence of LM2825HN-ADJ lies in its ability to regulate the output voltage with high precision, ensuring a reliable power supply for various applications.
Packaging/Quantity: This product is typically sold in reels or tubes containing a specified quantity of units.

Specifications

• Input Voltage Range: 4V to 40V
• Output Voltage Range: Adjustable from 1.25V to 37V
• Output Current: Up to 1.5A
• Dropout Voltage: 0.6V (typical)
• Line Regulation: 0.02% (typical)
• Load Regulation: 0.1% (typical)
• Quiescent Current: 10mA (typical)

Pin Configuration

The LM2825HN-ADJ has the following pin configuration:

```

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| | --| VIN GND|-- --| VOUT ADJ|-- |___________| ```

• VIN: Input voltage pin
• GND: Ground pin
• VOUT: Output voltage pin
• ADJ: Adjust pin for setting the desired output voltage

Functional Features

• Adjustable Output Voltage: The LM2825HN-ADJ allows the user to set the desired output voltage within a wide range, providing flexibility for various applications.
• High Efficiency: This voltage regulator offers high efficiency, minimizing power dissipation and maximizing battery life in portable devices.
• Low Dropout Voltage: With a low dropout voltage of 0.6V, the LM2825HN-ADJ can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Short Circuit Protection: The device incorporates short circuit protection, safeguarding the regulator and the connected circuitry from damage in case of a fault.

Advantages and Disadvantages

Advantages: - Wide input voltage range - Adjustable output voltage - High efficiency - Low dropout voltage - Short circuit protection

Disadvantages: - Requires external components for operation - May require additional heat sinking for high power applications

Working Principles

The LM2825HN-ADJ 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 terminals. By comparing the output voltage with a reference voltage, the regulator adjusts the pass transistor to maintain a constant output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

The LM2825HN-ADJ finds applications in various fields, including:

1. Power Supply Modules: It can be used in power supply modules to provide a regulated voltage for microcontrollers, sensors, and other electronic components.
2. Battery-Powered Devices: The LM2825HN-ADJ is suitable for battery-powered devices such as portable audio players, handheld instruments, and wireless communication devices.
3. Automotive Electronics: It can be employed in automotive electronics to regulate voltages for infotainment systems, lighting controls, and other vehicle subsystems.
4. Industrial Control Systems: The voltage regulator is useful in industrial control systems, ensuring stable power supply for PLCs, motor drives, and other critical components.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and adjustable output voltage.
2. LM1117: Another adjustable linear voltage regulator with low dropout voltage and high current capability.
3. LT1083: A high-current adjustable linear voltage regulator suitable for demanding applications.
4. LM7805: A fixed-output voltage regulator providing a regulated 5V output.

These alternative models offer similar functionality to the LM2825HN-ADJ and can be considered based on specific requirements and design constraints.

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