LD1085DT33R

Product Overview

Category

LD1085DT33R belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage in electronic circuits.

Characteristics

• LD1085DT33R is a low-dropout (LDO) voltage regulator.
• It has a fixed output voltage of 3.3V.
• The device operates with a maximum input voltage of 30V.
• LD1085DT33R can provide a maximum output current of 3A.

Package

The LD1085DT33R comes in a TO-220 package, which is a widely used through-hole package for power devices.

Essence

The essence of LD1085DT33R lies in its ability to regulate voltage efficiently and reliably, ensuring stable power supply to electronic components.

Packaging/Quantity

LD1085DT33R is typically packaged in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: Up to 30V
• Output Voltage: 3.3V (fixed)
• Output Current: Up to 3A
• Dropout Voltage: 1.2V (typical)
• Line Regulation: 0.05% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1085DT33R 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

• Low dropout voltage: LD1085DT33R exhibits a low dropout voltage, enabling it to regulate voltage effectively even when the input voltage is close to the desired output voltage.
• Overcurrent protection: The device incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
• Thermal shutdown: LD1085DT33R includes a thermal shutdown feature that protects it from overheating, ensuring its longevity and reliability.

Advantages and Disadvantages

Advantages

• High output current capability (up to 3A).
• Low dropout voltage allows for efficient voltage regulation.
• Overcurrent protection enhances circuit safety.
• Thermal shutdown prevents overheating.

Disadvantages

• Fixed output voltage may limit flexibility in certain applications.
• Limited input voltage range (up to 30V).

Working Principles

LD1085DT33R operates based on the principle of linear voltage regulation. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. This mechanism ensures that the output voltage remains stable even when the input voltage fluctuates.

Detailed Application Field Plans

LD1085DT33R finds application in various electronic systems where a stable and regulated 3.3V power supply is required. Some common application fields include:

1. Microcontroller circuits
2. Embedded systems
3. Power management modules
4. Battery-powered devices
5. Audio amplifiers

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD1085DT33R are:

1. LM1117-3.3: A popular LDO voltage regulator with similar specifications.
2. LT1085CT: Another LDO voltage regulator capable of providing up to 3A output current.
3. TPS7A3301: An ultra-low dropout voltage regulator suitable for demanding applications.

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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