LD1585CV33

Product Overview

Category

LD1585CV33 belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• LD1585CV33 has a low dropout voltage, making it suitable for applications where a stable output voltage is required even when the input voltage is close to the desired output voltage.
• It has a high output current capability, allowing it to handle higher loads.
• The device operates within a wide input voltage range, providing flexibility in various applications.
• LD1585CV33 exhibits excellent line and load regulation, ensuring a stable output voltage under different operating conditions.

Package

The LD1585CV33 comes in a TO-220 package, which provides good thermal dissipation properties.

Essence

The essence of LD1585CV33 lies in its ability to regulate voltage efficiently and reliably.

Packaging/Quantity

The product is typically sold in reels or tubes, with quantities varying depending on the manufacturer's packaging specifications.

Specifications

• Input Voltage Range: 4.5V to 26V
• Output Voltage: 3.3V
• Dropout Voltage: 1.2V (typical)
• Output Current: Up to 3A
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD1585CV33 has three pins:

1. Vin (Pin 1): This pin is used to connect the input voltage.
2. Vout (Pin 2): This pin provides the regulated output voltage.
3. GND (Pin 3): This pin is connected to the ground reference.

Functional Features

• LD1585CV33 offers a built-in thermal shutdown feature that protects the device from overheating.
• It incorporates current limit protection, safeguarding the regulator and the load from excessive current.
• The device has a low quiescent current, minimizing power consumption when the load is light.

Advantages and Disadvantages

Advantages

• Low dropout voltage ensures stable output even with small input-output differentials.
• High output current capability allows for handling higher loads.
• Wide input voltage range provides flexibility in various applications.
• Excellent line and load regulation ensure a stable output voltage under different operating conditions.

Disadvantages

• The TO-220 package may require additional space on the PCB due to its size.
• The device may require external capacitors for stability, adding complexity to the circuit design.

Working Principles

LD1585CV33 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 terminals. By maintaining a constant voltage drop across the pass transistor, LD1585CV33 ensures a stable output voltage regardless of variations in the input voltage or load conditions.

Detailed Application Field Plans

LD1585CV33 finds applications in various fields, including but not limited to: - Power supplies for microcontrollers and other digital ICs - Battery-powered devices - Automotive electronics - Industrial control systems - Audio amplifiers

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LD1585CV33 are: - LM1117-3.3: A popular 3.3V voltage regulator with similar specifications. - LT1086: A high-current, adjustable voltage regulator suitable for various applications. - TPS7A3301: An ultra-low-noise, low-dropout voltage regulator designed for sensitive analog circuits.

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

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