LD1085V33

Product Overview

Category

LD1085V33 belongs to the category of voltage regulators.

Use

The LD1085V33 is primarily used for regulating voltage in electronic circuits.

Characteristics

• Package: The LD1085V33 comes in a TO-220 package.
• Essence: It is an adjustable linear voltage regulator.
• Packaging/Quantity: Typically, the LD1085V33 is sold in packs of 10 or more.

Specifications

The LD1085V33 has the following specifications:

• Output Voltage: 3.3V
• Output Current: Up to 3A
• Dropout Voltage: 1.2V (typical)
• Input Voltage Range: 4.5V to 20V
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1085V33 has three pins:

1. Vin (Pin 1): Input voltage pin.
2. Vout (Pin 2): Output voltage pin.
3. GND (Pin 3): Ground pin.

Functional Features

The LD1085V33 offers the following functional features:

• Adjustable Output: The output voltage can be adjusted using external resistors.
• Overcurrent Protection: The LD1085V33 includes built-in overcurrent protection to safeguard connected devices.
• Thermal Shutdown: In case of excessive heat, the regulator shuts down to prevent damage.
• Low Dropout Voltage: The dropout voltage is low, allowing efficient regulation even with small input-output differentials.

Advantages and Disadvantages

Advantages

• High output current capability.
• Wide input voltage range.
• Low dropout voltage.
• Built-in protection features.

Disadvantages

• Requires external resistors for voltage adjustment.
• Limited output voltage options.

Working Principles

The LD1085V33 operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output pins. The regulator compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LD1085V33 finds applications in various electronic devices and circuits, including but not limited to:

1. Power Supplies: It can be used in power supply circuits to provide regulated voltage to other components.
2. Microcontrollers: The LD1085V33 can be employed to regulate the voltage supplied to microcontrollers, ensuring stable operation.
3. Audio Amplifiers: It can be utilized in audio amplifier circuits to maintain a constant voltage for optimal audio performance.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LD1085V33 include:

1. LM317: A popular adjustable linear voltage regulator with a wide range of output voltages.
2. LT1084: Another adjustable linear voltage regulator capable of delivering higher output currents.
3. LM1117: A fixed-output voltage regulator available in various voltage options.

These alternative models can be considered depending on specific requirements and design constraints.

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